Polyetheretherketone (PEEK) has been used in orthopedic surgery for several decades. Numerous methods were invented to alter the properties of PEEK. By adding nanoparticles, fibers, etc., elastic modulus and strength of PEEK can be changed to meet certain demand. In this study, tantalum (Ta), a ...

Aiming at the improvement of tantalum bioactivity, hydroxyapatite coatings have been grown on Ta samples by plasma electrolytic oxidation (PEO) without any pre- or post-treatment. It has been evaluated the influence of polarization voltage, which ranged from 350 to 500 V, and treatment time, ran...

The sodium superoxide was prepared in single step method by heating sodium nitrate (NaNO3) in oxygen rich environment. The PANi/NaO2 composites were prepared using Ex-situ technique range from 5–20 wt.%. The crystallinity and structure morphology of the PANi/ NaO2 composite films were character...

In this work, the hydrothermally-synthesized sodium niobate nanowires were used to decompose Rhodamine B dye solution through the piezo-catalytic effect. With the sodium niobate catalyst, a high piezo-catalytic degradation ratio of ∼80% was achieved under the excitation of vibration for the Rho...

The previously reported compound “Li7TaN4” [1–4] is a mixture of two phases. In addition to the already described Li16 Ta2N8O [5], single crystals of the second phase identified as Li7TaN4 were obtained. Li7TaN4 (a = 9.825(2) Å, Z = 8, spacegroup Pa3̄) crystallizes in a superstructure of ant...

The combustion of Zr and (Zr+ZrO2) powdery mixtures in air was accompanied by major ZrN stabilization. The synthesis of cheap ZrN with the high yield in air was facile and utile. The influence of Y2O3 additive on the content of ZrN the solid combustion products (SCP) was investigated. The reagen...

To evaluate the effectiveness of ZrN as a diffusion barrier against fission gases, we investigate the incorporation and migration of fission gas atoms, with a focus on Xe, in ZrN by first-principles calculations. The formations of point defects in ZrN, including vacancies, interstitials, divacan...

The oxidation behavior of zirconium nitride coating in high-temperature water vapor and air environments was studied. The parabolic rate constant of ZrN oxidizing in the water vapor environment at 600 °C was approximately 100 times faster than that in air, due to the larger pores and greater nu...

The interest about zirconium oxynitrides is growing with the attention for zirconium nitrides phase at high zirconium content. In recent years a great progress has been made to realize both the higher nitride phase (Zr3N4) and the higher oxynitride phase (Zr2ON2) in more ordered crystal structur...

Total knee arthroplasty is a well established treatment for degenerative joint disease, which is also performed as a treatment in younger and middle-aged patients who have a significant physical activity and high life expectancy. However, complications may occur due to biological responses to we...

We report on the lowermost pressure and temperature conditions where cubic zirconium(IV) nitride having Th3P4-type structure, c-Zr3N4, forms in a belt-type apparatus. This novel hard material having exceptional wear resistance by machining of low-carbon steels appears at pressures between 6.5 an...

External bone fixation devices provide support and rehabilitation for severely damaged/broken bones, however, this invasive procedure is prone to infection. Zirconium nitride/silver (Ti-ZrN/Ag) coatings were characterised for surface topography, chemical composition, physicochemistry and antimic...

Zirconium (Zr) and its alloys are considered as promising materials for implant applications due to their excellent biocompatibility. However, the poor tribological properties of Zr are limiting its widespread applications. Therefore, in this investigation thermal nitriding of laser processed Zr...

This paper reports the experimental results on synthesis of zirconium nitride from zircon sand through transferred arc plasma processing via carbothermal reduction and nitridation reaction. A mixture of zircon sand and carbon was processed in a transferred arc set-up in a stream of nitrogen gas....

A novel manganese selenide with hexagonal prism structure stabilized by nitrogen-doped carbon is successfully synthesized by a simple solvothermal and carbonization processes. Without generating toxic H2Se gases and using template, this method is more environmental friendly and simple than tradi...

Nanohybrids have significant potential in improving the performance of Li–ion batteries (LIBs). Herein, bismuth selenide nanosheets/nitrogen–doped carbon hybrids (Bi2Se3@NC) are prepared by selenylation of bismuth (III) metal–organic frameworks (Bi–MOFs), which are obtained by solvothermal r...

The present study investigates structural optical and electrical properties of Indium Selenide thin films under nitrogen atmosphere and substrate heat treatment. Thermal evaporation technique was used to prepare indium selenide films. The X-ray diffraction reveals enhancement in crystallinity du...

Nitrogen-doped carbon matrix (Co/NC) has been synthesized with NaCl as a template and peptone as a carbon/nitrogen source. Subsequently, mesoporous nitrogen-doped CoSe/NC was prepared by solvothermal selenization. The obtained CoSe/NC is useful as highly efficient bifunctional electrocatalyst fo...

Generally, the catalytic overpotentials of hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) are unavoidable because of the low charge transfer. In this work, two strategies of alloying of Co with Ni and enclosing of electrocatalysts with carbonaceous materials were both used...

Bulk thermal or filament initiated reactions of mixed powders of transition metal chlorides and Sr2N and Ba3N2 produce transition metal nitrides (TiN, ZrN, HfN, VN, V2N) in good yield. The products were characterised by X-ray powder diffraction, SEM/EDAX, FT-IR, microelemental analysis and imagi...