样式: 排序: IF: - GO 导出 标记为已读
-
Tailoring thermodynamic stability, mechanical properties, and anisotropies in TiX (X=Nb, Zr) disordered alloys: A first-principles study J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-03-18 Wenwei Song, Shidong Feng, Qianqiu Du, Liu Yang, Li-Min Wang
This paper employs first principles to calculate the elastic modulus and anisotropies of β-TiX (=Nb/Zr) disordered models. Based on the special quasi-random structures (SQS) theory and utilizing the open-source software ICET, disordered structures of β-TiX (=Nb/Zr) are established, and their formation energies and the stability of the β phase are determined. Subsequently, the elastic constants of these
-
Kinetic study of GeOx amorphous film disproportionation into a-Ge nanoclusters / GeO2 system using Raman and infrared spectroscopy J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-03-16 Fan Zhang, V.A. Volodin, K.N. Astankova, P.V. Shvets, A.Yu. Goikhman, M. Vergnat
In this paper, based on the analysis of Raman spectroscopy data, the kinetics of the disproportionation reaction process (GeO → (1−/2)Ge + (/2)GeO) of an amorphous GeO film during furnace annealing were studied. An approximation of the experimental kinetics of the disproportionation reaction to the theoretical Kolmogorov–Johnson–Mel–Avrami dependence has been carried out. By analyzing the temperature
-
High-temperature oxidation degradation mechanism of novel Zr-containing SiC fibers J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-03-16 Chengmou Deng, Huiyong Yang, Juntong Huang, Ruiying Luo, Lianyi Wang, Zhi Chen, Wei Li, Wenpeng Li, Jintao Qiu, Jihong Wang, Zhaobo Cheng, Yi Huang, Yida Zhao
The application of ceramics matrix composites (CMCs) in extreme environments is often dictated by the oxidation resistance of SiC fibers, which are frequently utilized as the reinforcement of CMCs. Introducing heterogeneous elements into SiC fibers is one effective way to enhance their oxidation resistance. In this work, the chemical composition, microstructural evolution, phase evolutions, and tensile
-
Amorphous carbon nitride (C3N4) J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-03-16 Murat Durandurdu
This detailed investigation employs an ab initio approach to explore the atomic structure and electronic properties of an amorphous carbon nitride (CN) model. The model, designed with an exact 3:4 ratio, is based on an amorphous boron nitride configuration. The study reveals crucial insights into the mean coordination number for C and N atoms within the amorphous structure. With values of 2.95 for
-
Structural study of crystalline and amorphous phases of Si0.65Ge0.35Bx (x = 0, 0.01, 0.05, 0.10) alloy prepared by long-time mechanical alloying J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-03-15 Satoshi Hiroi, Koji Ohara, Omprakash Muthusamy, Hiroshi Nakajima, Shigeo Mori, Tsunehiro Takeuchi
The atomic structure and configuration of SiGeB ( = 0, 0.01, 0.05, 0.10) powders prepared by long-time mechanical alloying are analyzed by X-ray total scattering measurement and transmission electron microscopy. The results show that the powders contain a large amount of the amorphous phase and a small amount of the crystalline phase. The structural parameters, including the fractions of the amorphous
-
Structural changes in trajectories of platinum sphere migration via laser illumination J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-03-14 Shunta Fukushima, Hirofumi Hidai, Sho Itoh, Tetsuo Kishi, Souta Matsusaka
In this study, metal spheres in glass were manipulated via heating using continuous-wave laser illumination. Metals are doped into the trajectory and selective compositional changes in the glass are observed. Meanwhile, the glass structure is modified via rapid heating and quenching. The structure of silica glass modified via platinum sphere migration was examined. Results of electron probe microanalysis
-
Wettability and thermal shock resistance of novel h-BN based ceramic seals for nitrogen oxide sensor J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-03-12 Xiaochun Wang, Bin Hou, Hao Wu, Yun Ding, Wei Wang, Ruizhu Li, Li Li
In this study, the novel h-BN based ceramic seals are investigated for nitrogen oxide sensor. The alkaline-free glass (H4) exhibited good wettability on the Fe-16Cr alloy and yttria stabilization zirconia (YSZ) chip and the wetting rate obviously accelerated when the temperature exceeds 940 ℃. The shape parament Ɛ and wetting area of the H4 glass on the substrate of Fe-16Cr alloy and YSZ chip reach
-
Effect of Y2O3 and different acids in PL response and fingerprint detection of SiO2:Dy3+,Eu3+ J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-03-12 Janet Elias, Luis A. Diaz-Torres, Jorge L. Cervantes, Edson O. Ramirez-Esqueda, Alejandro Lezama-Gallegos, Eduardo Montes, Miguel Vallejo
Synthesis of silica (SiO) matrix doped with Dy and Eu was performed, and the combined effects of YO and different acids (HCl and HNO) are studied. The resulting samples present different SiO -YO phases. The structures show granular-stack microstructures and irregular porosity. Samples exhibit the characteristics rare earths absorption bands and a decrement in UV region due to the presence of YO. This
-
New strategy to further enhance the thermal insulation performance of silica aerogel: Decline the macropore content between skeletons J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-03-12 Shengxin Gong, Yaofei Lei, Xin Li, Jialin Li, Zhijie Jiang, Yu He, Yiming Li, Ziyu Sun, Huaihe Song, Xiaohong Chen
Silica aerogels are considered as promising porous thermal insulation materials. However, the macropores between skeletons in the microstructure prevent further improvement of the thermal insulation performance. Therefore, it is feasible to decrease the macropores content between skeletons to enhance the thermal insulation performance. In this work, we employed AlO nanoparticles as fillers and utilized
-
Enhancing bone regeneration: Exploring the potential of silicate chlorinated bioactive glasses and dehydration mechanisms J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-03-10 Joyce Rodrigues de Souza, Elisa Camargo Kukulka, Vêronica Ribeiro dos Santos, Letícia Terumi Kito, Eliandra de Sousa Trichês, Gilmar Patrocínio Thim, Alexandre Luiz Souto Borges, Tiago Moreira Bastos Campos
This study aimed to compare two different compositions of sol-gel method-derived silicate chlorinated bioactive glasses - 45S5 and 58S - and explore the dehydration processes applied (lyophilization, lyophilization+calcination, and calcination). In the synthesis process, sodium metasilicate was used as a silica precursor, and it underwent ion exchange to form silicic acid. The samples underwent characterization
-
Enhancement of damage resistance of transparent Li2O-Al2O3-B2O3 glass by crystallization J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-03-10 Hailei Xie, Kun Zhou, Sijia Hu, Jiawei Fu, Shuwang Duo, Jiang Shi
Aluminoborate glasses exhibit remarkable crack-resistance properties, rendering them a promising material for cover glasses in portable electronic devices. However, their usage has been hindered by their relatively low hardness. To address this challenge, a parent glass with 11 LiO-30 AlO-55 BO-2 TiO-2 PO (wt%) was prepared using a melt-cast method. Heat treatment at 575 °C yielded a glass-ceramic
-
The interplay between the topology of nanoclusters and the characteristic of boson peak in As-S glasses J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-03-09 Pavlo Baloh, Vladimír Tkáč, Róbert Tarasenko, Martin Orendáč, Alžbeta Orendáčová, Oleksandr Mitsa, Vladimir Mitsa, Roman Holomb, Alexander Feher
The combination of mean coordination and concentration dependencies of elastic modules and low-frequency Raman scattering of As-S glasses brings new information about the spectroscopic boson peak (SBP) behavior. The analysis of the characteristic temperature positions of the thermometric boson peak (TBP) and the magnitude of heat capacity of As-S glasses was performed. This study was focused on the
-
Development of low-stress SiC coating on single crystal Si using low elastic modulus SiOC amorphous buffer layer J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-03-08 Weichen Jing, Naeem ul Haq Tariq, Junchao Wang, Wenkang Hou, Tianying Xiong, Mingqiang Tang
In this study, we successfully prepared low-stress SiC coatings on single-crystal Si substrates using the organometallic chemical vapor deposition (MOCVD) technique. For this purpose, the SiOC buffer layer (with low hardness and low elastic modulus) was initially deposited on the substrate and then the SiC coating was directly deposited on the buffer layer. A series of both, the buffer layer and the
-
Sol-gel derived bioactive glasses containing boron and strontium: Bioactivity, biocompatibility, and antibacterial properties J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-03-07 Firoozeh Niazvand, Fariborz Sharifianjazi, AmirHossein Esmaeilkhanian, Elahe Ahmadi, Nahid Moradigharibvand, Navid Rabiee, Alexander Seifalian, Alireza Ghiasvand, Mahsa Hojjati
This study was aimed at the biological characterization of bioactive glasses in the systems of (60-x) SiO–36CaO–4PO–xBO, and (60-x) SiO–31CaO–4PO–5SrO-xBO (x = 0, 1, 5, 10 and 15 mol%) synthesized through sol-gel technique. The influence of boron and strontium addition on in vivo bioactivity, antibacterial efficiency, and cell viability was studied. The morphological and structural assessments indicated
-
The effect of forced vibration coupling on amorphous alloy superplasticity J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-03-04 X.C. Tang, X.H. Yao
Vibration is a common phenomenon in nature and industry. While it typically appears as damaging resonance that must be eliminated, it can also manifest as a novel technique. Especially when paired with amorphous alloys, the material’s metastable characteristics facilitate significant plastic deformation under ultrasonic vibration. The primary emphasis of this article is the coupling relationship that
-
Temperature dependent luminescence exploration in CIELab of Dy3+/Sm3+ ions co-imbued in phospho-tellurite glasses for eco-friendly light generation J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-03-04 Joydeb Biswas, Samar Jana, Sourav Ghosh
The novel phospho-tellurite glasses co-activated with Dysprosium (Dy)/Samarium (Sm) ions open up new arena in optoelectronics as well as environment-friendly solid state lighting device applications. The photoluminescence spectra of the co-doped glasses exhibit strong yellowish emission (: 573 nm) as well as strong reddish-orange (: 598 nm) light emission under n-UV excitations. Spectral overlapping
-
FT-Raman spectroscopic and electrical investigations of RE3+ doped multi-functional silicate glasses for cathode plating and integrated microelectronic technology J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-02-28 P.J. Gracie, Yasmin, D. Geetha
[Display omitted]
-
Grain refinement and improved hydrogen storage performance of nanostructured Mg-Ni-La alloys by amorphous crystallization exerting hydrogen atmosphere J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-02-28 Yiming Li, Xia Dong, Xueyun Gao, Lei Xing, Long Luo, Zhuocheng Liu, Guofang Zhang, Yongzhi Li, Yunping Ji, Fei Yang
Hydrogen storage property of Mg based alloys can be effectively improved by nanocrystalline microstructure. Here we presented an attractive finding that ultrafine and homogeneous microstructure, with a size of around 10 nm, could be fabricated by nanocrystallization of amorphous Mg-Ni-La alloy under hydrogen atmosphere. Crystallization annealing exerting hydrogen atmosphere promoted the formation of
-
Effect of copper oxide amount on non-isothermal crystallization kinetics of diphosphate glasses J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-02-28 Majda Khaldi, Yousf Islem Bourezg, Mohamed Kharroubi, Foudil Sahnoune, Messaoud Harfouche, Ahcen Keziz, Mostafa Maache, Lakhdar Gacem, Djamel Bradai
The present study investigates the thermal behavior and structural properties of NaCuZnPO ( = 0, 1 and 5 mol%) glasses. Differential thermal analysis (DTA) under non-isothermal conditions and X-ray diffraction (XRD) techniques were used to explore the effect of CuO amount on the crystallization kinetics of the glasses. The characteristic temperatures were used to calculate the activation energy, enthalpy
-
Physicochemical, optical, and dielectric studies of physically vapor deposited amorphous thin Cu25-x (ZnGe)25-x Se50+2x films J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-02-27 Ahmed Saeed Hassanien, Ishu Sharma
This article focuses on studying the physicochemical parameters, dielectric properties, and electronic polarizability of a-Cu(ZnGe)Se thin films (0.0 ≤ ≤ 10.0 at.%). These films are synthesized by physical vapor deposition under a vacuum 10 Pa. Deposition rate and film thickness are fixed at 500 nm and 10 nm/s, respectively. X-ray diffraction confirmed the non-crystalline nature of these films. EDX
-
Preparation and thermal insulation performance of Al2O3[sbnd]Y2O3[sbnd]SiO2 ternary composite aerogels with high specific surface area and low density J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-02-27 Kang Qiu, Sijia Liu, Haoren Ma, Xiaochan Liu, Jing Zhang, Qingliang Guo, Xinfu Zhao, Shimo Yu, Zhipeng Yuan, Xibin Yi
Against the background of global energy shortages and the need for long-term flight safety of aerospace vehicles, traditional silica aerogels have the problems of insufficient temperature resistance and poor thermal insulation at high-temperatures, and are no longer able to meet the demand. In this study, a series of monolithic AlOYOSiO ternary aerogels were successfully synthesized via synchronous
-
Structure tailoring and thermal performances of water glass-derived silica aerogel composite with high specific surface area and enhanced thermal stability J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-02-24 Dongping Yu, Ming Liu, Fuhao Xu, Yong Kong, Xiaodong Shen
[Display omitted]
-
Tuning thermal and mechanical performances by substitution of divalent cations in aluminosilicate glasses J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-02-24 Xuefei Ke, Mingjun Huang, Ang Qiao, Qingshuang Zheng, Muzhi Cai, Haizheng Tao
Here, the substitution of divalent cations is used as a strategy to tune the thermal and mechanical properties of aluminosilicate glasses. Following the successive substitution of R in 7RO·14MgO·28AlO·51SiO glasses (R= Mg, Ca, Sr, Ba, Zn), the nonlinear evolution in performances occurs, including glass transition temperature (), thermal stability (Δ), fragility index (), hardness (), crack resistance
-
Effect of porosity on the infrared extinction properties of carbon aerogel ultrafine powders J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-02-24 Zhaoliang Yu, Wenlian Peng, Qinghai Liu, Yan Liu, Xiaodong Dai
Porosity is an important factor affecting the infrared (IR) extinction performance of porous materials. In this paper, seven kinds of bulk carbon aerogels with different porosities have been prepared based on sol-gel method and their physical parameters such as microstructure, porosity, specific surface area and apparent density have been systematically characterized. Then, the infrared extinction
-
Table-like magnetocaloric effect and high magnetocaloric response in Gd-Mn-Fe-Al amorphous/crystalline dual-phase system J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-02-23 Fan Chen, Hangboce Yin, Jianing Wang, Meng Gao, Lijian Song, Yan Zhang, Wei Xu, Changjiang Zhang, Jun-Qiang Wang, Juntao Huo
In this work, a series of Gd-based amorphous/crystalline dual-phase composite materials are prepared by adjusting the Gd content in Gd-Mn-Fe-Al system. The Gd(MnFeAl) alloy exhibits a wide table-like magnetocaloric curve in the temperature range of 140 K to 260 K, with a peak value of 3.9 J kg K under a magnetic field change of 5 T. The wide table-like magnetocaloric effect is due to the dual-phase
-
Analysis of plasma etching reactivity of bismuth aluminosilicate glasses using fluorine concentration J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-02-21 Young Min Byun, Jae Ho Choi, Won Bin Im, Hyeong-Jun Kim
AlO was replaced with AlF in the composition of bismuth aluminosilicate glasses, and the resistance of the resulting glasses to CF/Ar/O plasma was tested. The results were interpreted from the standpoint of glass structure. The resistance to plasma etching increased as the F concentration in the glass increased. After etching, all samples retained a smooth surface structure, and no craters or reactive
-
Physical aging of a biodegradable alicyclic polymer: poly (pentamethylene trans-1,4-cyclohexanedicarboxylate) J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-02-21 Marouane Mejres, Kylian Hallavant, Giulia Guidotti, Michelina Soccio, Nadia Lotti, Antonella Esposito, Allisson Saiter-Fourcin
[Display omitted]
-
Insight into the structure and crystallization of SiO2-Al2O3-P2O5-Na2O-MgO-CaO glass system with Mg-Ca substitution: A molecular dynamics study J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-02-21 Jing Tian, Yuan Li, Jijie Zheng, Shujiang Liu, Jiarui Chen, Yong Liu, Gaorong Han
Transparent glass ceramics (TGCs) have shown great prospects in many application fields. Understanding the effect of oxides on glass network structure and crystallization is essential for designing TGCs. A series of 18NaO-(16-x)CaO-xMgO-3PO-2.5AlO-60.5SiO (mol%, = 0, 4, 8, 12, 16) glass-ceramics were studied with Molecular dynamics (MD) simulations, and the effect of CaO substituted by MgO on the glass
-
Effect of the iron content on the thermal and dielectric relaxation process of sodium zinc-phosphate quaternary glassy systems J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-02-21 Dipankar Biswas, Bidyut Kumar Ghosh, Ashok Das, Soumya Kanti Hazra, Anindya Sundar Das, Rittwick Mondal, Soumyajyoti Kabi, Shuma Adhikari
To explore the consequence of NaO substitution by FeO on the physical, thermal and dielectric properties of zinc-phosphate-based glassy systems, a series of samples with chemical compositions of 25ZnO-40PO-(35-)NaO-FeO where, ( = 0.10, 0.15, 0.20, 0.25) have been prepared by melt quenching technique. The well-known Archimedes principle is deployed to measure the value of densities of the materials
-
Investigating the influence of medium range order defects on shear instability in Cu64Zr36 metallic glass J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-02-21 Yuan Liu, Zengyu Yang, Yong Yang, Jingrun Luo, Xin Huang
The occurrence of shear instability in metallic glasses is profoundly influenced by the spatial perturbation of material properties. Despite the considerable research on the origin of shear transformation zones (STZ), it remains a challenge to understand the behavior from a structural perspective. In this study, extensive molecular simulations (MD) and synchrotron diffraction were employed to characterize
-
One-step preparation of cast stone from TBFS: Dual effects of TiO2 content on glass network and precipitation behavior J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-02-20 Ziyu Dang, Bingji Yan, Daizheng Wang, Hongwei Guo, Wei Zhao, Hongwei Li
TiO serves as a nucleating agent with significant impact on crystal precipitation. This study investigates the effects of TiO content on the properties of CaO-MgO-AlO-SiO system cast stones and crystal precipitation. Differential scanning calorimetry, x-ray diffraction, scanning electron microscopy, and energy spectrometry were employed to characterize the parent glass and cast stone. The study systematically
-
Tailoring the microstructure and soft magnetic properties of (Fe0.83B0.11Si0.02P0.03C0.01)99.5Cu0.5 nanocrystalline alloy based on the rapid annealing J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-02-17 Min Zhao, Jing Pang, Wei Zhang, Qingchun Xiang, Yinglei Ren, Xiaoyu Li, Keqiang Qiu
In this work, the effects of annealing temperatures and time on the microstructure and soft magnetic properties of (FeBSiPC)Cu nanocrystalline alloy were investigated using a new rapid annealing process. The results show that at each annealing temperature, there exists an annealing time for optimum soft magnetic properties. The annealing temperature and time were further optimized, and excellent properties
-
Using a simple radial basis function neural network to predict the glass transition temperature of alkali borate glasses J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-02-17 Leonardo dos Santos Vitoria, Daniel Roberto Cassar, Susana de Souza Lalic, Marcio Luis Ferreira Nascimento
Artificial Neural Networks (ANN) are powerful machine learning algorithms. In the context of glass science, ANNs have been successfully used to induce composition-property regression models. These models are already influencing the way that we design new glasses, moving away from the traditional “cook and look” approach to computer-aided design. In this work, we induced an ANN model for the glass transition
-
-
-
Revealing the mechanical responses and accommodation mechanisms of Cu-based amorphous composites under elastic preload and ultrasonic vibration treatment J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-02-15 Jiangtao Yu, Yan Lou, Zhaoyi Wang, Lingyun Yang, Guijian Huang, Jiang Ma
In this study, Cu-based amorphous composites are subjected to elastic preload and ultrasonic vibration (pre-UP) treatment at room temperature, with preloads of 250 N, 500 N, 750 N, and 1000 N and ultrasonic amplitudes of 15 μm, 25 μm, 34 μm, and 50 μm. Additionally, the mechanical response, ultrasonic transmission efficiency, microstructure evolution, and accommodation mechanism characteristics of
-
The influence of time dependent Al2O3 dissolution during melting on the structure-bioactivity correlation of Mg containing silica-based bioactive glasses J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-02-15 Onat Başak, Branislav Hruška, Lenka Buňová, Francisco Muñoz, Martin Michálek, Mária Chromčíková
Alumina crucibles are less expensive than platinum crucibles. However, alumina crucibles tend to promote contamination of the melts, which affects the glasses, including their thermal and chemical properties. The unfavorable impact of AlO on bioactivity has limited the use of alumina crucibles in bioactive glass production. However, research has also shown that a certain amount of AlO enhances the
-
Effects of Mo on the glass forming ability and properties of Fe-B-C-P-Si-Mo bulk metallic glasses J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-02-13 Ranbin Wang, Lingxiang Shi, You Wu, Jili Jia, Yang Shao, Kefu Yao
FeBCPSiMo ( = 0, 1, 2, 3, 4 and 5) bulk metallic glasses (BMGs) were designed and successfully prepared. The effects of Mo content on the glass forming ability (GFA), thermal stability, crystallization behavior, soft magnetic properties, and mechanical properties have been investigated. It was found that the appropriate replacement of Fe by Mo could improve the GFA of the Fe-based alloys, and the critical
-
Effect of SiO2/TiO2 ratio on the crystallization behavior of CaO-TiO2-SiO2 glass-ceramic system for opaque white glaze J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-02-13 Youna Lim, Kangduk Kim, Kyu-sung Han
The crystallization behavior of the CaO-TiO-SiO glass-ceramic system was analyzed based on the amount of TiO substituted, and its applicability as an opaque white glaze was determined. The XRD analysis revealed the presence of titanite and wollastonite-based crystalline phases in the glass-ceramic. The non-isothermal analysis using DTA showed surface crystallization behavior in T (titanite) and internal
-
Fundamental understanding of the ductile machinability of fused silica under in-situ laser assisted diamond cutting J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-02-09 Chuangting Lin, Siyu Wu, Kai Huang, Weiqi Huang, Zhengding Zheng, Jianguo Zhang, Xiao Chen, Jianfeng Xu
Fused silica's ductile machinability was investigated through theoretical molecular dynamics simulation and systematic experiments. Nano-indentation experiments demonstrate that fused silica exhibits a decrease in hardness and an increase in elastic modulus at elevated temperature. Further analysis of the indentations scanned by atomic force microscopy and the density calculated through the established
-
A study of the structural, electrical and bioactivity properties of antimony zinc borate glasses with Na2O added for a variety of applications J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-02-09 Vinoda Rani M., Naresh Pallati, Ravi Kumar Vuradi, Sadananda Chary A., Narender Reddy S.
[Display omitted]
-
Steam strengthened glass J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-02-09 Jingshi Wu, Timothy M. Gross, Zheming Zheng, Kyle T. Hufziger, Samuel J. Koseba, Randall E. Youngman, Kristy L. Smith
A novel glass strengthening method is achieved by exposing glass to water vapor under high temperature and pressure to create a surface compressive stress layer. The development of a surface compressive layer during steam strengthening requires consideration of two competing processes: 1.) generation of network strain by a diffusion and reaction mechanism, which is described by water diffusion into
-
Crystallization and rheological study of a Nd-oxyapatite-bearing melt J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-02-07 Jeanini Jiusti, Elise Regnier, Vincent Malivert, Muriel Neyret, Leith Ghazzai, Emmanuelle Brackx, Emilien Sauvage, François Faure, Philippe Marchal
Current French nuclear waste glasses have been designed to avoid the precipitation of crystals during the vitrification process. Removing this constraint would reduce the volume of glass produced, and therefore the cost of storage. However, the impact of crystallization on both glass melt properties and cooled glass durability needs to be investigated. This paper focuses on the impact of crystals on
-
The role of CeO2 insertion and gamma radiation in optoelectronic and ultrasonic transducer applications of PbO-B2O3 glasses J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-02-07 E.M. Abou Hussein, Mirham A.Y. Barakat, M.A. Marzouk
Novel BO-PbO glass systems doped CeO was developed and characterized. XRD and FTIR analyses were utilized to describe the glass structures. Chemical durability in 100 °C dis. HO for 16 h and other glass's physical parameters e.g. density, molar volume, specific volume and oxygen packing density (OPD) were evaluated. Gamma irradiation (80 kGy) causes an enhancement in the glass properties like the aggregation
-
Atomic scale study of the impact of metallic glass nanoparticles at high velocities J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-02-05 Javier Wachter, Nicolás Amigo, Gonzalo Gutiérrez, Alejandro Zúñiga
In this work we studied the high velocity impact of CuZrAl metallic glass nanoparticles onto substrates of the same material using molecular dynamics simulations. In particular we studied the effect of the impact velocity, nanoparticle temperature on the maximum penetration depth, damping coefficient, heat generated by the impact, and mechanical deformation. We observed that the velocity is the most
-
Effect of Fe/Co ratio on the microstructure and properties of a typical FeCo-based amorphous alloys J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-02-05 Shuyan Zhang, Minxia Shi, Zhibin Zhang, Wei Quan
In this current study, the effect of various Fe/Co ratios on microstructure, thermal stability, microhardness, corrosion resistance and soft magnetic properties of FeCoYSiB ( = 8, 12, 18, 24 and 36 at.%) amorphous alloy ribbons was investigated. Due to the similar atomic radii of Fe and Co ferromagnetic elements, we have prepared a series of glassy alloy ribbons with different Fe/Co ratios through
-
Oxidized Icariin functionalized amino-mesoporous bioactive glass with slow-release and anti-inflammatory properties potential application in bone tissue repair J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-02-03 Fufen Li, Yining Chen, Xiaohan Yang, Min Gong, Lang Li, Anjing Chen, Nianhua Dan, Zhengjun Li
In order to endow bioactive glass (BG) with the anti-inflammatory activity for the purpose of promoting bone formation. In this study, Icariin (ICA) possessing excellent anti-inflammatory activity was oxidized by NaIO to obtain OICA containing -CHO, and then it was loaded on aminated mesoporous bioactive glass (BG-NH) by Schiff base reaction to obtain BG-OICA. The results showed that compared to BG-ICA
-
Preparation and luminescence properties of Sm3+, Eu3+ co-doped glass ceramics containing NaNbO3 crystal phase J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-02-03 Xiaoxu Zhang, Dandan Li, Peng Liu, Tong Wang, Qianwen Wang, Yuchun Wan, Xiangyu Zou, Hongbo Zhang, Chunhui Su
The lack of red light in commercial white LEDs limits the application in solid-state lighting. So preparing high-performance red luminescent materials is currently the main challenge. In this study, a series of Sm, Eu co-doped glass ceramics containing NaNbO crystalline phase were successfully prepared using the melt-curing-crystallization method. By differential scanning calorimetry analysis, X-ray
-
Crystallization kinetics of chalcogenide glasses (ChG) probed via elastic vibration J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-02-03 Yifei Wu, Haihui Ruan
Chalcogenide glasses (ChGs) have been used in industry and our daily lives as infrared optical elements. Their crystallization kinetics must be investigated because a high level of crystallinity deteriorates the optical performance of glasses. In this study, the crystallization kinetics of ChGs were investigated by using the impulse excitation technique (IET), in which crystallization kinetics was
-
Understanding of distribution model and coordination structure of Dy3+ in B2O3-Bi2O3-SiO2 glass based on Raman, infrared and XPS analysis J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-02-03 Pengkai Wang, Yuting Ye, Guoying Zhao, Jingshan Hou, Yufeng Liu, Xin Qiao, Zhongzhi Wang, Bo Li, Yongzheng Fang
Bismuth glasses doped with rare earth ions, characterized by low phonon energy, high refractive index, and broad infrared transmission range, hold significant promise for photonic devices. The spectral behavior of bismuth glasses is critically influenced by the distribution and coordination structure of rare earth ions. This study employed Dy ions, known for their high sensitivity to ligand surroundings
-
Effect of Nd2O3 on the phase composition, structure and aqueous durability of SiO2-B2O3-CaO-Na2O-TiO2 glass-ceramics J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-02-02 Boyang Pu, Fu Wang, Youli Xu, Yuxin Gu, Laibao Liu, Qilong Liao
The effect of the NdO on the phase composition, structure and aqueous durability of SiO-BO-CaO-NaO-TiO glass-ceramics has been investigated. The incorporation of NdO is beneficial to the formation of perovskite, and the solubility of NdO in perovskite glass-ceramics does not exceed 20 wt%. With the increase of NdO, the number of non-bridging oxygen and depolymerization extent in residual glass gradually
-
Packing fractions in borate and silicate glasses with an emphasis on lead and bismuth systems J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-01-31 Keya Aggarwal, Steve Feller
The densities of lead oxide and bismuth oxide modified glasses determined over a wide range of compositions were collected from the literature. Using these data as well as Shannon atomic radii and atomic masses, the glass systems’ total packing fractions and oxygen packing fractions were computed. For borates, these fractions were correlated against the trend of the fraction of tetrahedral borate (N4)
-
Effects of annealing on thermal stress generation during the cooling process of large-size silica glass J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-01-31 Suping Yin, Chengshuai Li, Haisheng Fang, Qianli Ma
High-temperature two-step chemical vapor deposition (CVD) is a promising method of preparing large-scale silica glass, in which thermal stress is generated due to uneven temperature distribution when cooling naturally to room temperature. In this paper, a numerical model of the annealing and cooling processes has been established to study the generation and evolution of thermal stress. Furthermore
-
-
Study on the regulation mechanism of tunable characteristics of porous silica microspheres synthesized via micelle templating method J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-02-01 Mingyang Kong, Kuixian Wei, Ning Tan, Wenhui Ma
In this study, amorphous porous silica microspheres (PSMs) were synthesized by the micelle templating method. The effects of cationic surfactants with different alkyl chain lengths and molar masses on the tunable characteristics of PSMs were systematically investigated under alkaline and mild conditions. By increasing the alkyl chain length and the molar mass of the cationic surfactant, PSMs with sizes
-
Influence of K ions on CaO-SiO2-KO2 melt structure and diffusion coefficients studied by molecular dynamics simulations J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-01-25 Yi Min, Shiyan Jiao, Peiyao Guo, Feichi Chen, Chengjun Liu
Molecular dynamics simulations were employed to investigate the influence of replacing equimolar CaO with K2O in CaO-SiO2-K2O melts. The study reveals that Si-O primarily adopts a tetrahedral form, and the introduction of K2O expands the distance between network structures, increasing average bond lengths for Ca-(O)-Si and K-(O)-Si. The coordination number for K-(O)-Si consistently exceeds that for
-
Corrections to theoretical glass transition temperature models and interpretations with application examples to chalcogenide glass J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-01-27 R.A. Loretz, T.J. Loretz
The glass transition temperature, Tg, is one of the most important physical attributes of glass in general and optical glasses in particular. Issues associated with refractive index stability, Modulation Transfer Function and upper use temperature of a lens system rely heavily on correct knowledge of Tg. While most oxide glass researchers and engineers understand the scientific meaning and application
-
Magnetic properties and large magneto-caloric effect in the amorphous Ho0.2Tm0.2Gd0.2Co0.2Al0.2 ribbon J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-01-28 Yongyun Shu, Longfei Wang, Silu Huang, Yikun Zhang
We fabricated the amorphous Ho0.2Tm0.2Gd0.2Co0.2Al0.2 ribbon by melt-spun method and systematically investigated its glass forming ability (GFA) and magnetic properties, especially of the magnetic phase transition (MPT) and magneto-caloric (MC) effect. The melt-spun Ho0.2Tm0.2Gd0.2Co0.2Al0.2 ribbon is found to exhibit a fully amorphous structure and good GFA. The amorphous Ho0.2Tm0.2Gd0.2Co0.2Al0.2
-
Dependence between glass transition and plasticity in amorphous aluminum oxide: A molecular dynamics study J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-01-23 Jiahui Zhang, Mikael De Meulder, Erkka J. Frankberg, Antti Kuronen
-
The effect of CaO/MgO content on properties of barium aluminosilicate sealants for solid oxide fuel cells J. Non-Cryst. Solids (IF 3.5) Pub Date : 2024-01-24 Andrey O. Zhigachev, Anastasia R. Iskanderova, Darya V. Zhigacheva, Ekaterina A. Agarkova, Natalia V. Demeneva, Sergey I. Bredikhin
Design of an appropriate sealant is crucial for reliable sealing and stable long-term operation of solid oxide fuel cells. We have investigated sealants based on barium aluminosilicate glass-ceramic modified with CaO and MgO. Focus of the research was on the 0.33BaO-0.20XO-0.33SiO2–0.05Al2O3–0.09B2O3 system, where XO is CaO, MgO, or a mixture of the two. Key properties of the system were studied, and