Titanium-based biomaterials are the gold standard for orthopedic implants; however, they are not generally suitable for the manufacture of intravascular stents. Their low strength-ductility trade-off and low work hardening rate are their main limitations. However, Ni-free alloys are desirable for such application in order to avoid allergic reactions caused by the high Ni-content materials currently

On the one hand, Irradiation is everywhere and irradiation effect, especially the material irradiation damage effect under strong irradiation field, is one of the key factors for the degradation and even failure of nuclear structural materials; on the other, existing nuclear energy structural materials are far from being able to meet the requirements of advanced nuclear energy systems and there is

Microwave absorption performances can be remarkably enhanced using an electromagnetic (EM) wave absorber with synergistically dielectric and magnetic losses. In this study, the eggplant was used as a raw material to produce silicon carbide (SiC) aerogel by two steps: carbonization and subsequent carbothermic reduction. Then the magnetic NiCo layer was coated on the SiC aerogel (NiCo–SiC) by chemical

Novel corrugated fins were proposed and applied in metal hydride devices in this paper. To simulate the hydrogen absorption process, we first validated the numerical models based on the finite element method. Then we investigated the effect of device geometry and turbulent flow of cooling water on the absorption performance. The optimized device with 5 mm fin height, 2 mm fin length and 13 fins was

More efficient power conversion devices are able to transmit greater electrical power across larger distances to satisfy growing global electrical needs. A critical requirement to achieve more efficient power conversion are the soft magnetic materials used as core materials in transformers, inductors, and motors. To that effect it is well known that the use of non-equilibrium microstructures, which

To achieve the approriate trade-off between the low charing delay and enough self-protection ability in the NI REBCO coil, the controllable Cu layer structure in REBCO tape is essential, which can cause required electrical and thermal properties in both the radial and circumferential direction. In this paper, the correlation between the material characteristics of the copper layer on the electrical

With growing interest in Laser Additive Manufacturing (LAM) of High-entropy alloys (HEAs) during most recent years, compositional elements design and process strategies innovation are primary methods to overcome undesirable microstructures and defects. Here we propose a new approach, a novel real-time laser shock modulation of melt pool (LSMMP) to obtain melt pool modifications for yielding HEAs with

Solid solution softening is an unusual adjustment behavior that is attractive for material strength. In this paper, the effect of boron alloying on the strength of Ti2AlC is investigated by first-principles calculations. Our results show that the elastic modulus and ideal strength of Ti2AlC decrease overall due to alloying with boron, which indicates that solid solution softening occurs. Conversely

For biomedical titanium alloys, the reduction of their elastic modulus approximating that of human bone (~30 GPa) is highly required for using them as bone implant materials to reduce the risk of stress shielding. In this study, Ti-15Nb-(4-6)Sn (at%) shape memory alloys were developed to achieve the bone-like elastic modulus for biomedical applications by varying Sn content to adjust the factors such

A2W3O12-type (A=La, Sm, Eu, Gd, RE) rare earth tungstate high-entropy ceramic powder with a positively charged surface was fabricated by a high-temperature solid-phase method, and its antibacterial and antiviral properties were evaluated for the first time. Changes in the antibacterial and antiviral activity and ionic solubility of these compounds induced by changing the RE element at the A-position

Phase equilibria of the Al-Co-Ta ternary system over the whole composition range at 1200 °C and 1300 °C were experimentally determined from the equilibrated alloys using electron probe microanalysis, scanning electron microscopy, and X-ray diffraction. The measured results indicate that, at 1200 °C, the addition of Al can stabilize the λ1-Co2Ta phase (Laves C14-type), which is absent in binary system

BHPC (biomass hierarchical porous carbon) is a new microwave absorption material with extraordinarily low density, excellent dielectric loss, and a low environmental impact. In this paper, a Ni/BHPC composite is introduced, which were fabricated using a simple electroless plating method. When the NiSO4 concentration is changed, the electromagnetic characteristics and absorption performance are optimized

The effects of post-deposition oxygen annealing temperature on the physical, chemical, and optical properties of gallium oxide (Ga2O3) films were systematically studied in this work. First, Ga2O3 films were deposited on Si (100) substrates by atomic layer deposition (ALD) and then annealed at 500–900 ℃, respectively. Several standard surface analysis methods were used to characterize the Ga2O3 films

Nanocrystalline soft magnetic composites (n-SMCs) with excellent soft magnetic properties are widely used in medium and high frequency electronic devices. However, the production of n-SMCs with high frequency stability and low core losses (Pc) remains a challenge. In this work, we balanced electromagnetic performances and frequency properties of Finemet n-SMCs by tuning the mass ratio of flake and

In order to design and develop new marine structural materials with a balance of strength-toughness-corrosion resistance, in this work, the synergistic effects of Al and Ti on the microstructure, mechanical and corrosion resistance properties of CoCrFeNi(Al0.3Ti0.2)x high-entropy alloys were systematically investigated. With the addition of Al and Ti, the L12-γ' phase formed in the alloys significantly

Zr-V-Fe alloys are promising getter materials due to their remarkable hydrogen storage properties. In this work, the effects of preparation methods including annealing, melt-spinning, and melt-spinning & annealing on the microstructure as well as the activation properties and hydrogen absorption properties of Zr7V5Fe alloy are systematically investigated. Phase structure investigations show that annealed

Two samples of an α+β Ti-4Al-4Mo-4Sn-0.5Si (wt%) alloy, one with fine prior β grains and a heterogeneous microstructure and the other with coarse prior β grains and a homogeneous microstructure were prepared by extrusion of compacts of TiH2/Al/Mo/Sn/Si powder blend at 1200 and 1300 °C respectively. The heterogeneous microstructure is manifested by softer Mo-rich regions with a full α/β lamellar structure

Pure red fluorescence generated by near infrared (NIR) excitation is desired for bio-imaging with high biological penetration, but without cell damage or multi-photon photo-toxicity. In this work, β-NaYF4:Er3+ and β-NaYF4:Er3+,Tm3+ microcrystals were synthesized using a novel hydrothermal method. β-NaYF4:Er3+ microcrystals exhibited intense green and red up-conversion emissions under 976 nm laser diode

In this study, the Ni-Co-S nanosheets have been grown onto CoMoO4 nanorods by the electrodeposition method (CoMoO4@NCS). The supercapacitor performance of the CoMoO4@NCS composites can be greatly promoted due to the unique core-shell structure. The addition of amorphous Ni-Co-S nanosheets can provide much more electrochemical active sites, thereby enhancing the capacitive capability. The CoMoO4@NCS

In this work, a fully dense CoCrFeNi high entropy alloys (HEAs) coating with homogeneous microstructure was successfully prepared on AZ91 alloy by cold spray. It is innovative to cross-integrate HEAs with Mg alloys using cold spray to break through the “bottleneck” of Mg alloys. The average microhardness of the coating was 5 times higher than Mg alloys. The weight loss of the coating in wear test was

In this paper, by adding rare-earth (RE) elements to Fe89Zr7B4 ternary amorphous alloy, we obtained a series of Fe87Zr7B4RE2 (RE = Dy, Tb, Gd) amorphous ribbons to further improve the magnetic refrigeration capacity of the basic alloy. Through the heavy RE element substitutions, the glass-formability of the Fe89Zr7B4 alloy was improved effectively. Besides, the Curie temperature Tc of the alloy system

The equiatomic high-entropy alloy (HEA) CoCrFeMnNi not only has excellent mechanical properties but also good irradiation resistance. However, the mechanical properties of some equiatomic medium-entropy alloys (MEAs) are superior to those of CoCrFeMnNi HEA. In this study, the irradiation resistance and changes in composition due to irradiation in CoCrNi and CoCrFeNi MEAs and CoCrFeMnNi HEA are investigated

All-solid-state batteries (ASSBs) have high safety and high energy density. Li10SnP2S12 sulfide solid electrolyte has attracted extensive attention due to its low fabrication cost and outstanding performance in ASSBs. However, its ionic conductivity and stability to lithium and air need to be further improved. Here, in order to avoid the formation of impurities related to Sn-related compounds, the

The effects of pre-strain on the continuous precipitation (CP) and discontinuous precipitation (DP) as well as mechanical properties of L12-strengthened HEAs were thoroughly studied. It is found that the pre-strain has a dual effect on the L12 precipitation behavior depending on the pre-strain level. At low pre-strains, the plastic deformation increases the dislocation density without significantly

This study effectively succeeded in synthesizing CdSe QDs and CdSe- SiO2 nanocomposites with controllable tunable size and spectacular morphology by using a solvothermal technique. UV-visible spectroscopy was used to study the effect of the growth time of CdSe QDs on the optical properties of its nanocomposite with SiO2. The structure of the prepared nanocomposites of CdSe- SiO2 was studied through

In this study, we developed fast and highly sensitive, label-free Ca-doped cupric oxide (CuO) based chemiresistive biosensors to detect C-reactive protein (CRP). The Successive Adsorption and Reaction (SILAR) method was used to deposit pure and Ca-doped CuO thin films on interdigitated gold electrodes. Film surfaces were functionalized with monoclonal anti-C-reactive protein antibody (anti-CRP) by

For the first time, the author reported the fabrication and characterizations of Co2+ doped Zn2SiO4 (Co2+: Zn2SiO4) using the recycled waste white rice husk ash (WRHA) based on empirical formula (Co3O4)1.0[(ZnO)55.0(WRHA)45.0]99.0 and produced by using melt-quenching technique. The precursor glass was heat treated at 700 ℃ until 950 ℃. The X-ray diffraction (XRD) result of Co2+: Zn2SiO4 showed that

Ultra-fine grained (UFG) hexagonal-close-packed (HCP) hafnium (Hf) and Hf-5wt%Y2O3 were prepared by a combination of high-energy ball milling and spark plasma sintering (SPS), and both possess high relative density (95% - 99%), high hardness, and low electrical conductivity. The Hf-5wt%Y2O3 (HYO) sample shows superior hardness of 12.11 GPa, which is about 6-7 times of that of coarse-grained Hf, and

In this study, a sonochemical reactor was used to synthesize Mn1−xCuxLa0.1Fe1.9O4 nanoferrites with different compositions of x (0.09, 0.18, 0.27, and 0.36). Mn1−xCuxLa0.1Fe1.9O4 nanoferrites were subjected to X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), vibrating sample magnetometer, and electrochemical impedance spectroscopy to investigate their magnetic, electrical

Zr co-doped TiO2:Ag nanoparticles were synthesized by the co-precipitation method and the influence of Zr co-dopant with varying content on the structural, optical and photocatalytic properties of TiO2:Ag photocatalysts was investigated. X-ray diffraction and Raman spectroscopy confirmed the anatase-rutile mixed phase of TiO2 and Zr content eased the anatase-rutile phase transformation. X-ray diffraction

As a result of their excellent creep strength at high temperatures, oxide dispersion strengthened alloys are attractive candidates as structural materials for high temperature applications. However, traditional production processes encounter several challenges when producing complex shape. This study employed a single/multi-track process optimization approach for the preparation of oxide dispersion

To further understand the effect of Ta additive on the creep damage for polycrystalline Ni-base superalloys, creep rupture tests on powder metallurgy (PM) superalloys with various Ta were carried out under different conditions in this study. The results indicated that the multiple crack propagation and damage mechanisms could occur at the identical creep condition. These different fracture mode areas