文献类型：期刊文献

中文题名：血管支架镁合金表面氟化镁涂层的制备与性能

英文题名：Preparation and Performance of Magnesium Fluoride Coating on Magnesium Alloy for Stent Application

作者：侯树森[1];郭贵中[1];王广龙[1];李文星[1];李悦[1]

第一作者：侯树森

机构：[1]新乡学院机电工程学院,河南新乡453003

第一机构：新乡学院机电工程学院

年份：2020

卷号：40

期号：8

起止页码：832-836

中文期刊名：特种铸造及有色合金

外文期刊名：Special Casting & Nonferrous Alloys

收录：CSTPCD;;Scopus;北大核心:【北大核心2017】；

基金：河南省重点研发与推广专项(科技攻关)资助项目(202102210268);全国教育科学“十三五”规划教育部重点课题资助项目(DJA180342)。

语种：中文

中文关键词：血管支架;镁合金;氟化镁涂层;耐腐蚀性

外文关键词：Coronary Stents;Magnesium Alloy;Magnesium Fluoride Coating;Corrosion Resistance

摘要：针对医用镁合金在生理环境下降解过快的问题,用化学转化法在镁合金表面制备了氟化镁涂层,以减缓镁合金血管支架的降解速率。分析了HF酸浓度、处理时间对转化涂层的成分、脆性以及耐腐蚀性的影响。结果表明,氟化镁涂层的厚度随HF酸处理时间延长而增大,但脆性也增大;较高的HF酸浓度下涂层的脆性较低,耐腐蚀性较好;HF酸浓度为40%、处理6 h后所得涂层具有最好的综合性能。
In order to reduce the degradation rate of magnesium alloy stents,magnesium fluoride coating was prepared on the surface of magnesium alloy by chemical conversion.The effects of hydrofluoric acid concentration and treatment time on the composition,brittleness and corrosion resistance of the coatings were investigated.The results indicate that the thickness of magnesium fluoride coating is increased with the treatment time,while the brittleness is also increased.In addition,the brittleness of the coating in a higher hydrofluoric acid concentration are lower,so the corrosion resistance presents better.The coating presents the satisfied comprehensive performance with hydrofluoric acid concentration of 40%at treatment of 6 h.