PURPOSE The aim of this study was to investigate the cytotoxicity in human gingival fibroblast by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay and corrosion behavior by potentiodynamic polarization technique of commercially pure titanium (Ti 12) and its alloy Ti-6Al-4V (Ti 31). MATERIALS AND METHODS In the present in vitro study, cytotoxicity of Ti 12 and Ti 31 in ...

At the present day in Russia the change of ferrous metals production technology results in the change of the chemical composition of solid waste from iron and steel works. Traditional approaches to waste recycling methods stop meeting the requirements of geoecological safety. The paper offers a methodology of usage of the ferrous industry waste taking into consideration a life cycle of the mate...

This work is mainly concerning with effects of Carbon, Nickel and vanadium on mechanical properties low alloy wear resistant steel. the results showed that The experimental steels yielded their best comprehensive at 940 °C quenching 200 tempering for 0.33 wt% C steel, 220°C 0.38 920°C 230 0.4 respectively.3% Ni steel property 900 tempering, while 5% was 920 tempering. Vanadium addition

We develop a fast and accurate machine-learned interatomic potential for the Mo-Nb-Ta-V-W quinary system use it to study segregation defects in body-centred cubic refractory high-entropy alloy MoNbTaVW. In bulk alloy, we observe clear ordering of mainly Mo-Ta V-W binaries at low temperatures. damaged crystals, our simulations reveal vanadium, smallest atom compressed interstitial-rich regions l...

An epidemiological investigation into an "illthrift" problem occurring on a dairy farm adjacent to an alloy-processing unit, established that the probable cause of the problem was chronic vanadium poisoning. The disease manifested initially in animals 4-18 months old which showed emaciation, chronic diarrhoea and, in some cases, rhinitis, conjunctivitis and recumbency followed by death. Post-mo...

In the present work, the oxide layers developed at elevated temperature on three vanadium-free titanium alloys, of interest as implant biomaterials, were studied by Rutherford backscattering spectroscopy, elastic recoil detection analysis, and scanning electron microscopy. The chemical composition of the alloys investigated, in wt%, was Ti–7Nb–6Al, Ti–13Nb–13Zr, and Ti–15Zr–4Nb. Upon oxidation ...

This article gives you proof that bimetallic transition metal clusters with the difference in electronegativity are better catalysts than monoatomic one. To prove this fact, a study of ethylene adsorption on bimetallic clusters vanadium-nickel VnNim (2≤n+m≤6) has been demonstrated. Our result shows that hardness has a quite good linear correlation with the non-Lewis of VnNi (n=1-5) cluster (R2=...

Ti-6Al-4V alloy attracting attention as a biomaterial features excellent mechanical properties and corrosion resistance, and super plasticity, so enables the forming of denture bases of complicated shapes. However, this alloy contains aluminum and vanadium liable to do serious harm to human bodies [1,2], so actual use will require prevention of direct contact with biological tissues. In our pre...

High-strength-low-alloy reinforcement bar steels prepared by vanadium microalloying methods have the potential to dramatically reduce embodied energy and carbon footprint of buildings.

Abstract A high-vanadium alloy composite layer was prepared on the surface of a carbon steel using cast technology, and wear properties were investigated. The results showed that microstructure composed primary vanadium carbides (VC), flake martensite, residual austenite, fine VC. hardness 63 HRC. abrasive resistance impact increased by 60% 26%, respectively, compared with those high-chromium i...