Search academic texts

Information × Registration Number 0216U010170, 0116U004955 , R & D reports Title Formation of functional surface layer with new properties for titanium alloy of medical purpose popup.stage_title Head Trush Vasyl, Registration Date 20-12-2016 Organization Karpenko Physico-Mechanical Institute of the National Academy of Science of Ukraine popup.description2 On the basis of determined regularities between phase and component composition of the coating, its morphology, hardness, hardening depth and temperature-time, gas-dynamic saturation parameters the algorithms of formation of nitride and oxynitride coatings on VT6 titanium alloy with regulated level of surface hardening were developed. It was determined that nitride coating with composition close to stoichiometric (TiN0,83) can be formed on the surface of VT6 titanium alloy at TА= 850oC, А= 12 h, pN2=105 Pа, and oxynitride coating with composition close to equiatomic (TiN0,46O0,54) during oxidation of nitride at pО2=0,001 Pа. It was shown that corrosion resistance of nitride coating TiN0,83 and oxynitride coating TiN0,46O0,54 in isotonic 0,9% solution of NaCl which simulates blood plasma, and in Ringer's solution which simulates tissue environment, is higher on an order of magnitude than the titanium alloy without surface modification. It was determined that temperature increase of 0,9% NaCl solution from 36 to 40°C, simulating the transition from a normal to inflammatory condition of the human body, does not influence almost on the corrosion protection of VT6 alloy by oxynitride coating TiN0,46O0,54. It was shown that fretting resistance of nitride coating TiN0,83 and oxynitride coating TiN0,46O0,54 under the conditions of dry friction and in Ringer's solution is higher than titanium alloy without surface modification. Product Description popup.authors Проскурняк Роман Васильович Ткачук Олег Володимирович popup.nrat_date 2020-04-02 Close