Federalnoe gosudarstvennoe byudzhetnoe uchrezhdenie nauki Institut khimii Dalnevostochnogo otdeleniya Rossijskoj akademii nauk (IKH DVO RAN)
发明人:
Gnedenkov Sergej Vasilevich (RU),Гнеденков Сергей Васильевич (RU),Sinebryukhov Sergej Leonidovich (RU),Синебрюхов Сергей Леонидович (RU),Egorkin Vladimir Sergeevich (RU),Егоркин Владимир Сергеевич (RU
申请号：
RU2019117805
公开号：
RU0002710597C1
申请日:
2019.06.07
申请国别(地区):
RU
年份:
2019
代理人:
摘要：
FIELD: technological processes.SUBSTANCE: invention relates to a method of producing a material with a composite anticorrosion coating for biocompatible implants with a limited period of stay in the body, serving for replacement and/or regeneration of damaged bone tissues, and can be used in implantation surgery. Proposed method is implemented by powder laser surfacing in protective gas medium with application of 3D printing controlled by software. Magnesium powder is converted into molten metal by means of laser beam immediately before application onto substrate or previous layer, note here that build-up is performed layer-by-layer, wherein each layer is applied in several passes of laser beam with formation of solid layer of magnesium metal from successively deposited tracks. Then, plasma-electrolytic oxidation of fused material is performed in bipolar mode: potentiostatic at voltage 370–390 V during anode polarization of material surface and galvanodynamic at current varying from 11 to 7 A at scanning rate minus 0.04 A/s, during cathode polarization, in electrolyte containing, g/l: calcium glycerophosphate C3H7CaO6P 20–30, sodium fluoride NaF 4–7 and sodium silicate Na2SiO3 7–10, to obtain hydroxyapatite Ca10(PO4)6(OH)2 layer. After that, ultrafine polytetrafluoroethylene is deposited on the surface of the obtained layer by 4-fold immersion in its 15 % suspension in isopropyl alcohol. After each dipping, air-drying and heat treatment of applied layers of UPTFE at 310–320 °C for 10–15 minutes.EFFECT: simplification of the method due to reduction of number of stages, reduction of labor costs and power consumption for its implementation, reduction of reagents consumption with simultaneous improvement of biocompatibility of the obtained composite material.3 cl, 2 tbl, 2 dwg, 2 exИзобретение относится к способу получения материала с композиционным антикоррозионным покрытием для биосовместимых имплантатов с ограниченным сроком нахождения в организме, служащих для замен
