The name of third author to be read as Huda Al fannakh.

Improvement of hot corrosion resistance in calcium-magnesium-aluminosilicate (CMAS: CaO-MgO-Al2O3-SiO2) environments is one of the main goals in the development of aero-engines especially in their thermal barrier coatings (TBCs). In this regard, this study aims to improve the quality and efficiency of the yttria-stabilized ZrO2 (8YSZ) TBCs by substitution of new coatings such as ZGYbY: ZrO2 9.5Y2O3

This work mainly focuses on the preparation of novel nano triphasic bioceramic composite (nanoHAP/nanoβ-TCP/ nanoTiO2) (NTPC) coating on 316L Stainless Steel (316L SS) by an electrophoretic deposition process (EPD) followed by sintering in a vacuum atmosphere for 1 h at 800 °C. This type of composite coatings is prepared for the first time owing to the amelioration of the implant by improving the surface

Ion-substituted hydroxyapatite (HAP) offers several advantages compared with pure HAP. Since the calcium amount is relatively lower compared with the stoichiometric ratio of pure HAP, the resulting calcium deficiency in ion-substituted HAP leads to higher degradation in the physiological environment. Therefore, ion-substituted HAP has promising applications in the biomedical industry, particularly

We have implanted xZnF2–(20-x)ZnO–40As2O3–40TeO2 (x = 4 and 20 mol%) glasses with nitrogen ions at different doses. The glass samples were characterized by Rutherford backscattering spectrometry for the concentration depth profiles of the implanted atoms, by SEM analysis for surface morphology, and also by UV–vis absorption spectroscopy. It was observed that in both the glass systems, there is an increase

Hydroxyapatite (HAp) has been widely used as an implant material for repairing or substituting human hard tissues due to its close similarity in composition to the natural bone and teeth. Many researchers are preparing HAp from natural and chemical sources. Generally, the products from the chemical sources are incompatible and do not meet out the biomedical demand. Thus, the present study is focused

Methylene blue (MB) is a toxic and colorful organic matter that exists in the wastewater of textile industries. Difficult biodegradability of MB causes biological treatment methods that cannot sufficiently biodegrade it. In photoelectrocatalytic (PEC) methods, by converting the radiation energy to the electricity, MB is degraded efficiently in the anolyte chamber. Using the ultrafiltration (UF) membrane

The present research involves studies of the influence of the physico-mechanical properties of the ceramics on the ballistic resistance of the new concept of the hybrid, ceramic–multi-layered UHMWPE composite armour developed using SiC and Al2O3 ceramics differing in thickness. Ballistic verification of new design of the ballistic composite armour was conducted in the scope of the protection against

We describe preparation of chlorophyll/flavonoid-sensitized ZnO nanoparticles with visible-light-induced photocatalytic activity. ZnO catalysts were sensitized by an incipient wetness impregnation in which chlorophyll and flavonoid natural pigments were extracted from parsley leaves and Curcuma longa roots, respectively. Structural studies were conducted using characterization techniques including

In this study, low-temperature solid-state synthesis of pure nanocrystalline ytterbium hexaboride (YbB6) employing iodine-based reduction method has been discussed. For the reduction reaction, the mechanically activated powder mixture of ytterbium oxide, boron oxide, magnesium, and iodine was heated up under Ar in a quartz tube to 85 °C. All reaction byproducts, viz. MgO, Mg3(BO3)2, and YbI2, were

In this study, the crystal structure, functional groups, morphological structure, elemental compositions, antimicrobial activity, and structural changes in the SBF of Zn-based HAp samples, synthesized by sol-gel method, doped with chitosan (CTS) at different amounts, were investigated. The crystal structure of the synthesized samples was determined by XRD technique, and the functional groups of the

In this research, the cell viability is tested on the surface-modified implants. Electrochemical setup is used for coating the hydroxyapatite (HA) powder and nano zinc particle (Zn)n on the Ti-6Al-4 V alloy. The electrolyte is prepared by mixing the HA and (Zn)n of varying quantity, and the effect of electrochemical parameter on surface coating thickness, surface quality and cell viability was studied

The cubic Ag2MoO4 photocatalyst was prepared with a solvothermal method using ethanol as a solvent. The morphology and structure of the obtained materials were analyzed by using X-ray diffraction and transmission electron microscopy. The effect of different heat treatment conditions on the visible-light response of Ag2MoO4 was studied by UV-Vis spectroscopy. The obtained Ag2MoO4 materials were applied

A new and precise control printing method was developed for preparing homogeneous microspheres. Hydroxyapatite-sodium alginate (HA-SA) mixed suspension was used as printing material and CaCl2 solution was used as solidifying liquid to prepared ceramic microspheres by pneumatic extrusion printing technology. By adjusting the positive pressure, dwell time, and hydroxyapatite concentration, the influence

Tm3+- and Yb3+-doped lithium-gadolinium oxide (Li-Gd2O3) ceramics, prepared by the simple evaporation technique, were incorporated into polystyrene (PS) films (as recycled Styrofoam). A study of the upconversion (UC) emission from Tm3+ as well as Yb3+ ions was performed under continuous wave excitation of a 980-nm laser, for both powder and PS film samples. High-intensity light emissions (UC) were

The aim of this study is to investigate the effect of nano-SiO2 (NS) particles addition on physico-mechanical properties, microstructure evolution, and apatite-formation ability of bioactive tricalcium silicate (TCS). Furthermore, the concentrations of calcium (Ca), silicon (Si), and phosphorus (P) in phosphate buffer saline solution (PBS) after immersion of TCS-based cements with diverse additions

The aim of this study was to evaluate the shear bond strength (SBS) between a substructure and veneer using two different veneering techniques: (i) liner and (ii) liner + dentine powder sprinkling). The first technique simply uses liners that act as bonding layers between the substructure and veneering material; the second technique consists of liners on which there has been dentine powder sprinkled

Green glazes were successfully prepared using ferrochromium slag waste as chromium and iron precursors by introducing Co2O3 as coloring agent. The performance of the glazes was investigated by XRD, EDS, FT-IR, and UV-vis. A chromatic mechanism was proposed to explain the variation of glaze colors with the increase of Co2O3 content. The results showed that the Co-doped glazes had Co-Fe-Cr mixed spinel-type

A dysprosium-modified BiFeO3-PbTiO3 electronic sample [chemical composition of (Pb0.7 Dy0.15 Bi0.15)(Fe0.3Ti0.7)O3] is synthesized through high-temperature mixed oxide/solid-state reaction route. The resistive, conducting, and capacitive behaviour of the fabricated sample is examined in various experimental conditions. The structural evaluation of the specimen is conducted using X-ray diffraction (XRD)

Antibiotic resistance is increasing to dangerous levels across the globe. A growing list of bacterial infections that lead to blood poisoning or foodborne diseases are becoming challenging to treat due to the loss of antibiotic efficacy. Studies on the antibacterial performance of Ag nanoparticles and other transitional metal oxides have gained increasing attention as an alternative therapeutic strategy

This work contains the results of investigations into the influence of titanium oxide (TiO2) addition on the properties of refractory magnesia ceramics. The presented research involved adding titanium oxide in a classic way, i.e. directly to the ceramic mix. The conducted laboratory tests revealed a significant impact of this oxide on the properties of refractory materials. Addition of a small amount

In this study, nuclear radiation shielding features of Al2Si2O5(OH)4–KAlSi3O8–SiO2 ceramic systems were explored by depending on cobalt (Co) insertion ratio (0, 5, 10, 20, 30 wt%). For this aim, five ceramic samples were produced and their elemental compositions were obtained with SEM-EDX analysis. Then, transmission measurements were achieved by using an ultra Ge detector and photons with 0.081–0

At present, the formation conditions of cordierite were relatively harsh, the formation temperature was close to the decomposition temperature, and it was difficult to control the sintering temperature. In order to solve the problem of cordierite synthesis, cordierite powders were synthesized by chemical coprecipitation–rotation evaporation and solid reaction sintering. The thermodynamics, thermal

In this paper, the effect of pre-fatigue loading on tensile damage and fracture of fiber-reinforced ceramic-matrix composites (CMCs) is investigated using a micromechanical approach. Under cyclic fatigue loading, the fiber/matrix interface shear stress degrades with applied cycles due to the damage mechanism of the interface wear. The micro stress field of the damaged composite including matrix cracking

Multicomponent rare-earth oxide-doped zirconia-based thermal barrier coatings (TBCs) are attractive alternatives for yttria-stabilized zirconia (YSZ) in advanced TBC applications. In this study, a zirconia-based nanopowder doped by multiple rare-earth oxides ((La1-xGdx)2Zr2O7; x = 0, 0.1, 0.2, 0.3, 0.4, 0.5, 1) was synthesized using sol-gel and calcination method. The product was then characterized

A systematic study was comparatively performed in the synthesis of CeO2 films on Ni tapes from different precursors using sol-gel process. With this concept, CeO2 thin and thick films were deposited on Ni tapes by a reel-to-reel sol-gel dip-coating process using alkoxide- and nitrate-based precursors. The films were heat-treated at different temperatures for different times under 4%H2-Ar atmosphere

Layered double hydroxides (LDHs) are anionic clays with unique physical and chemical properties. In this study, an indirect sol-gel synthesis method was applied to prepare alkaline earth metal–substituted layered double hydroxides of Mg2-xMx/Al1 (M = Ca, Sr, Ba). In the sol-gel processing, metal nitrates Mg(NO3)2·6H2O, Al(NO3)3·9H2O, Ca(NO3)2·4H2O, Sr(NO3)2 and Ba(NO3)2 dissolved in deionized water

Five samples of hydroxyapatite (HAp) doped with praseodymium (Pr) at various amounts (2, 4, 6, 8, and 10 at.%) were synthesized by using the wet chemical route. The effects of Pr doping on the structural and thermal properties, as well as on the in vitro performance of HAp, were investigated experimentally. The band structure and density of states (DOS) of HAp were studied theoretically. Incorporation

For decades, porous ceramics have received much scientific and industrial interests because they possess better thermal and chemical stabilities than their counterparts, including porous polymers and porous metals. Among the numerous kinds of porous ceramics, reticulated porous ceramics have recently been prepared for various application fields. However, as far as the authors’ knowledge, the radar-absorbing

The microwave dielectric properties of (Mg1-xCox)2SnO4 were investigated by X-ray diffraction (XRD) patterns, Rietveld refinement, Raman spectroscopy, and microstructural observation. As x increased from 0 to 0.05, both the lattice constant and the unit cell volume increased, indicating that the Co2+ ions effectively dissolved among the Mg2+ ions. However, when x exceeded 0.05, the Co2+ ions were not

The glass compositions 20BaO–xTiO2–(80–x)P2O5 with (x = 5, 10, and 20%mol) were elaborated by the conventional quenching method. These vitreous materials show a constant content of the barium oxide while the Ti/P ratio varies. They are characterized by X-ray diffraction in order to ascertain their amorphous nature. Density measurements are performed using diethyl orthophthalate as a medium liquid.

Cashew nut is derived activated from a carbon-loaded-titanium dioxide (CNAC-TiO2) is a nanomaterial which has been synthesized by a hydrothermal method. This nanomaterial is characterized by HR-SEM and HR-TEM which shows that CNAC-TiO2 nanobundle is spherical-shaped structure. X-ray (EDX) analysis confirms the C, Ti, and O present in CNAC-TiO2 nanomaterial; XRD analysis reveals the average crystalline

Pure (BNT) and iron-doped bismuth sodium titanate (Fe-BNT) ceramics were produced according to the formula Bi0.5Na0.5Ti1−xFexO3−0.5x, where x = 0 to 0.1. The addition of Fe2O3 enables decreasing the sintering temperature to 900 °C in comparison with 1075 °C for pure BNT, whilst also achieving lower porosities and greater densities. This is attributed to oxygen vacancy generation arising from substitution

The aim of this study was to investigate the bonding properties of metal orthodontic brackets and surface modifications applied to the surface of zirconia samples. Zirconia samples were divided into 4 groups according to surface modifications: group I, Er:YAG laser; group II, Nd:YAG laser, group III, air abrasion with silica-coated aluminum oxide; and group IV, hydrofluoric acid. After the application

Hydration mechanisms of hydratable alumina (HA) in citric acid at different pH are investigated in this study, aiming to improve rapid hydration process and massive hydration heat. By adding citric acid to adjust solution pHs to 2, 3, and 4, the crystal phase, morphologies, and microstructure of the HA hydrates are characterized by X-ray powder diffraction (XRD), differential scanning calorimetry (TG-DSC)

Calcium carbonate (CaCO3) is a widely used material in biomedical applications owing to its biocompatibility and widespread occurrence in nature, especially in the exoskeletons of marine organisms. The ability to undergo polymorphic transformation between CaCO3 polymorphs in aqueous environments provides a wide range of applications in the biomedical field, i.e. vaterite can gradually dissolve to release

In this paper, experimental method and first-principles calculations were combined to study the properties of pure hydroxyapatite and Zn-doped hydroxyapatite. Pure and Zn-doped hydroxyapatite (HA) powders were synthesized using the hydrothermal method. The FTIR spectra show that the adding of Zn atoms makes the intensity of PO43− stretching peaks become weaken and obscure. In addition, the O-H bending

The novel tetragonal tungsten bronze x(Ca0.28Ba0.72)Nb2O6-(1-x)(Sr0.61Ba0.39)Nb2O6 solid solution ceramics were successfully synthesized by a conventional solid-state reaction method. The structural, dielectric, and ferroelectric properties of the ceramics were studied in detail. The result indicates that the sintering temperature has a significate influence on the microstructure, phase transition

First author name typo, was corrected as Saoudel instead of Soudel.

In this research, CuO nanostructures were successfully synthesized via a short-time and low-temperature hydrothermal route without a calcination step. The synthesis of these nanoparticles was accomplished through a hydrothermal reaction of cupric nitrate and sodium hydroxide with different concentrations of cetyltrimethylammonium bromide (CTAB) as the chemical assistant agents. The as-prepared products

SiAlON is a ceramic alloy (solid solution of Si3N4-Al2O3) which is discovered in the early 1970s. Since then, SiAlON ceramics have been used for structural applications due to its excellent fracture toughness and strength, outstanding chemical stability, and wear resistance. However, this material has also an enormous potential for functional applications. In this study, the effects of co-dopants on

The morphologies of different ZnO nanostructures (ZNSs) films (deposited on glass substrates) are investigated using simple and low-cost techniques. Two synthesis techniques, i.e., direct hydrothermal technique and a combination of pulsed-laser ablation under liquid and hydrothermal (PLAL-H) technique, are employed. The first technique (direct hydrothermal technique) is used to fabricate three-dimensional

The properties of the ordinary Portland cement (OPC) mortar having a water–cement (w/c) proportion of 0.450 and cement/sand ratio of 1:2 are altered by replacing cement with 25% fly ash and adding 2% colloidal nanosilica separately and in a combined form. The changes were studied experimentally. Cured specimens at different ages were subjected to compressive strength test, split tensile test, and durability

A series of hydroxyapatite/barium titanate (HA/BT) and tricalcium phosphate/barium titanate (TCP/BT) composites were prepared in various mixing ratios and sintered at temperatures between 500 and 1300 °C using the powder metallurgy method. Sintering was performed under different atmospheres to evaluate the effect of the atmosphere on the phase stability of the composites. BT phase showed slightly higher

A novel bismuth vanadate–silicon dioxide–graphene oxide (BiVO4/SiO2/GO) nanocomposite was synthesized successfully by using hydrothermal method. The as-prepared nanocomposite was characterized by various techniques, including X-ray diffraction (XRD), field emission scanning electron microscope (SEM), and Brunauer–Emmett–Teller (BET). The photocatalytic activity of nanoparticles was evaluated by measuring

TiO2-pillared layered niobic acid was prepared through a stepwise ion-exchange route, in which n-decylamine-pre-swelled layered niobic acid was subjected to react with the pillaring solution containing Ti(IV) polycations obtained by using tetrabutyl titanate as titanium source; then, the as-synthesized Ti(IV) polycation-intercalated layered intermediate was calcined at 723 K in air atmosphere. Powder

Yttrium stabilized tetragonal zirconia polycrystalline (Y-TZP) ceramics containing 2 mol% and 2.5 mol% yttria were prepared by mixing 3 mol% yttria-doped zirconia powders with yttria-free zirconia powders. The microstructures of the sintered samples were studied using SEM, XRD, and Raman spectra. In addition, an ultra-sharp V-notch (ρ < 0.5 μm) was induced by femtosecond laser to measure its actual

Recently, ferrite composite ceramics have received much attention for high-frequency device applications as the composite has both dielectric and magnetic properties, good chemical stability, and high electrical resistivity. M-type hexagonal ferrite BaFe12O19 (BaM) and cubic spinel ferrite CoFe2O4 (CoF) composites; (BaM)1−x(CoF)x (x = 0.0, 0.25, 0.50, 0.75, and 1.0) were successfully synthesized by

Tissue engineering has emerged as an alternative approach to create bone tissue by growing cells on 3D scaffolding. The aim of this study was to synthesize a composite glass/chitosan (BG-CH) by using new salt leaching using powder (SLUP) process in order to control the porosity rate and then the chemical reactivity of the final product. SLUP process consists on the cavity creation with desired pore

Owing to the desired mechanical and biomedical characteristics of TiN-based coatings and the encourage features of pulsed magnetron sputtering, the current study was conducted to deposit Ti-Al-N thin film on AISI 316 using DC pulsed magnetron sputtering. All processing parameters were constant excluding the pulsed magnetron power which was varied from 100 to 175 W. The effect of processing power on

The room temperature electron paramagnetic resonance (EPR) and optical absorption studies of PbO-Li2O-As2O3-B2O3 glasses have been done by introducing a transition metal ion Cu+2 ion as a spin probe with fixed mole% in the given glass composition. Glasses containing transition metal (TM) ion give the information of site symmetry around the Cu+2 ion of the host glass. The EPR spectra of Cu+2 in all

The influence of selenium dioxide on bioglass in (45.0-x) SiO2 24.5Na2O 24.5CaO 6.0P2O5 xSeO2 (x = 0.0, 0.5, 1.0, 1.5, and 2.0 wt%) system was investigated by preparing the glass through conventional melting and annealing method. The glass transition temperature (Tg), crystallization temperature (Tc), and density of prepared glasses were measured by differential thermal analysis and Archimedes’ principle

The linear attenuation coefficients (μ) of various marble concretes have been studied in gamma energies 662, 1173, and 1332 keV by using the GEANT4 Monte Carlo simulation. The simulated results were then compared with experimental data, and a good agreement was observed for the concretes involved. The obtained results reveal that the concrete namely NM20 has higher μ and lower transmission factor among

In the present work, cobalt ferrite colloidal nanoparticle clusters were synthesized via solvothermal method using cobalt and iron chlorides, sodium acetate, and ethylene glycol as starting materials. The effects of ultrasonication process of the primary solution on the structure, microstructure, specific surface area, and molecular and magnetic characteristics of the synthesized powders were investigated

The effect of different particle size obtained by diverse milling time towards the microstructure and magnetic properties of gadolinium iron garnet (GdIG) at room temperature was reported in this research work. Gadolinium iron garnet (GdIG) has been mechanically alloyed at 3, 6, 9 and 12 h followed by sintering at 1200 °C. The samples were characterized using transmission electron microscopy (TEM)

Lead-free Ba0.85Ca0.15Zr0.1Ti0.9O3 piezoelectric nanofiber was synthesized using the electrospinning technique. The surface of sintered BCZT nanofibers was modified by dopamine via the chemical coating method. Dopamine-modified BCZT nanofibers were used as fillers in polyvinylidenefluoride–hexafluoropropylene (PVDF-HFP) polymer matrix to cast flexible composite films by solution casting method. Nanofibers

Brittle matrix is usually toughened by metallic phases to enhance the fracture toughness. In the present study of alumina nickel, composite with 15 wt% of nickel was prepared by sol-gel route by using Al(C3H7O)3, NiCl2.6H2O, and dextrose as precursor. The precursor gel composite was reduced by the novel in situ reduction to obtain metallic nickel dispersed in the alumina matrix. Prior to this reduction

Diopside (CaMgSi2O6) glass-ceramic, a typical derivative of the pyroxene system, has attracted considerable attentions in the fields of anti-erosion, anti-abrasion, light-emitting diode (LED) packaging, or electric circuit substrate materials because of its high mechanical strength, good physical and chemical stability, as well as remarkable low dielectric coefficient and loss. However, the effect

Nanoparticle Na3V2(PO4)3/C materials with different polyacrylonitrile contents can be successfully synthesized using precipitation method. As an energy storage material used in the production of lithium batteries which is also compared with pure of that, the Na3V2(PO4)3/C not only has a larger capacity, but also has a very high cycle stability. In particular, the initial discharge capacities of the

With automobile numbers continuing to increase, competition among manufacturers of brake pads is also increasing along with the search for additives to serve as alternatives to the materials presently being used. In addition to the cost of the additives used, another important consideration in choosing materials is that they should be safe for the environment and human health. This study investigated