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

Nano-sized silicon carbide/mullite bi-layered film was applied onto the surface of graphite using electrophoretic deposition (EPD) method from stabilized suspensions. The suspensions were prepared adding 5 g L−1 SiC and 10 g L−1 mullite in ethanol. The effects of adding various amounts of polyethylene imine (PEI) on the stability of suspensions were investigated by visual inspection (sedimentation

In this study, α-TCP and β-TCP were successfully produced via a mechanochemical method from aragonite structures, Clinocardium ciliatum seashells, at 850 °C, 1000 °C, and 1200 °C sintering temperatures. The characterization of the obtained materials was carried out via FT-IR, SEM/EDX, BET, XRD, ICP-OES analysis. Samples were soaked for 21 days in simulated body fluid (SBF) for a bioactivity test. Additionally

In spite of the advantages of CaO refractories, such as high refractoriness, potential to produce pure steel molten, and high alkaline corrosion resistance, their application has been limited due to its poor hydration resistance. Introducing additives to improve the hydration resistance of lime is a novel method. The influences of Mg(OH)2 and sintering temperatures on the sintering and hydration resistance

Co3O4 coating is one of most studied transition metal oxide due to its wide application in many fields such as gas sensors, electrochromic thin films, supercapacitors, and solar selective absorber. Aqueous electrophoretic deposition (EPD), which is considered as a cost-effective and environment-friendly coating technology, was successfully employed in preparing nano-Co3O4 coating in this study. For

In this study, the direct foaming method was used to prepare groups of porous fireclay refractories containing 36–42 wt% Al2O3 from Aswan ball clay and Kalabsha kaolin (local raw material). A mixture of calcium oxide or carbide and aluminium powder was used as a foaming agent. Sodium silicate and a surfactant were employed to assist the foaming process. The physico-mechanical and mineralogical properties

Undoped and vanadium (V)-doped titanium dioxide nanotubes (TNTs and VTNTs, respectively) were synthesized by hydrothermal method for biological applications. The fabricated nanotubes were characterized by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), Raman spectroscopy, nitrogen adsorption-desorption isotherms, transmission electron microscopy (TEM), and scanning electron

In this study, composite coatings reinforced with huntite/hydromagnesite, antimony (III) oxide (Sb2O3), and boric acid minerals having the inorganic-based flame retardant properties were produced. Before the composite coatings were produced, the huntite/hydromagnesite and Sb2O3 were reduced to the nano-size by milling. The structural, chemical, and morphological properties of the reinforcement materials

In vitro bioactivity, biodegradation, and biocompatibility behavior of a new bioactive glass systems were investigated with the incorporation of selenium oxide, for the replacement of sodium oxide in the traditional 45S5 bioglass composition. The apatite-forming ability of melt-derived bioactive glasses was evaluated by immersion studies in simulated body fluid while monitoring the concentration of

In this study, Ti6Al4V plates were gone through three steps of pretreatment process (sandblasting + acid etching + preheating) followed by biomimetic coating of pure hydroxyapatites (HAp) on pretreated substrate. Pretreated substrates were examined by SEM, EDS, AFM, FTIR, and XRD; meanwhile, prepared coatings were examined by SEM, EDS, FTIR, XRD, XPS, scratch test, and in vitro cell studies (SaOS-2

The wet chemical method was used to prepare ZnS:Cu (3%) nanoparticles. The capping agent (mercaptoethanol) was handled during the synthesis process. To investigate the photovoltaic properties of ZnS:Cu (3%) nanoparticles synthesized via the wet chemical method, the incident photon to electron conversion efficiency (IPCE) measurement was performed. The IPCE (%) value at 400 nm was found as 5.12. This

The first-principles calculations based on density functional theory with generalized gradient approximation were carried out to investigate the fundamental features of hydroxyapatite, the primary constituent of human bone and tooth, for use in light-curable dental composites. Moreover, the influence of strontium incorporation into hydroxyapatite on structural, electronic and optical properties of

The target of the present paper is to polymerize ethylene glycol monomer in geopolymer binder forming hybrid organic and inorganic polymer composites. Ethylene glycol monomer used in different ratios from 0.5 to 2% from the total binding weight, where as geopolymer composites made from metakaolin activated by 45% sodium silicate. The aim of the present paper is to study the enhancement in produced

The objective of this research is to study the effects of zirconium and silver co-dopants on the photocatalytic reactivity of TiO2. Zirconium and silver co-doped titanium dioxide (Zr-Ag co-doped TiO2) was synthesized by sol-gel method. The molar ratio of silver was fixed at 5% mol, while the molar ratio of zirconium was varied at 5, 10, and 15% mol. The synthesized photocatalysts were calcined at 500 °C

The Fe3O4/SiO2/ZnO cubes were synthesized with core/shell/shell nanostructure through layer-by-layer chemical technique. At first, the Fe3O4 cubic powder was synthesized by the carbon reduction method. In the next step, the SiO2 shell was produced on Fe3O4 cube particles. Then a layer of ZnO was coated using zinc nitrate hexa-hydrate precursor by co-precipitation route. The Fe3O4/SiO2/ZnO cubes were

Temmoku glazes are special and artistic glazes that are used in certain applications. Temmokus are either slip glazes made from ferruginous clay or feldspathic type glazes containing iron oxide. Glaze composition, clay body, application method, and firing regime are the most important factors for achieving these kinds of glazes. In this study, a new temmoku glaze composition was developed and applied

A down-conversion luminescent material GdPO4-Gd3PO7:Eu3+ has been synthesized by Pechini sol-gel process. The XRD patterns indicated that the obtained powders have a mixed crystalline phase. An intense luminescent red emission was obtained upon excitation 275 nm. The influence of different synthesis conditions on morphology and the PL emission ratio I(5D0 → 7F2)/I(5D0 → 7F1) was established.

The effect of CuO, ZnO, and CuO+ZnO sintering aids added to BaZr0.8Y0.2O3−δ was investigated on phase formation, microstructure, and proton conductivity with the use of the X-ray diffraction technique, scanning electron microscopy, and electrochemical impedance spectroscopy, respectively. The BaZr0.8Y0.2O3−δ pellet samples were prepared by the solid-state reaction method and sintered at 1400 °C for

The aim of this study was to evaluate the effect of alumina (Al2O3) additive and sintering temperature on the microstructural, physical, mechanical, and in vitro bioactivity properties of hydroxyapatite (HA). The composites consisting of 2.5 and 5 wt% Al2O3 and monolithic HA were uniaxially pelleted at 350 MPa with the size of ∅11 and 11 mm2 and sintered at five different temperatures ranging from

This study describes the fabrication of macroporous ceramic supports for membranes prepared from quartz sand and dolomite mixtures, which are abundant local raw materials; tubular supports are made using the extrusion technique. The structure was analyzed by X-ray diffraction (XRD) and mercury porosimetry techniques; the presence of possible defects in the prepared porous ceramic materials was investigated

A series of low-creep magnesium aluminate spinel refractories doped with 0–3 wt% Y2O3 were prepared by sintering at 1750 °C. The physical properties, especially the high-temperature properties of the refractories, were investigated. X-ray diffractometry (XRD) and scanning electron microscopy (SEM) were applied to characterize the phases and microstructure of the refractories. The results indicated