Microstructure and bioactivity of a cold sprayed rough/porous Ta coating on Ti6Al4V substrate

查看全文 作　　者：TANG [1,2]JunRong;ZHAO [1,2]ZhiPo;CUI [1]XinYu;WANG [1]JiQiang;XIONG [1]TianYing

机构地区：[1]Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China;[2]School of Materials Science and Engineering,University of Science and Technology of China,Shenyang 110016,China

出　　处：《Science China(Technological Sciences)》索引2020年第63卷第5期,共9页

摘　　要：To improve the bioactivity and biocompatibility of titanium implants,a rough/porous tantalum(Ta)coating was firstly prepared on Ti6Al4V substrate by cold spraying.The results indicated that the surface of Ta coating is extremely rough with lots of visible holes,because of poor deposition quality.Microstructure and microhardness results showed that different layers appeared in the inner and outer parts of coatings,corresponding to porosity,due to lack of subsequent compaction.The simulated body fluid(SBF)soaking test showed that spherical apatite sediments were mineralized on rough/porous surface in SBF after 2–4 weeks,which demonstrated that the cold sprayed Ta coating had good bioactivity.This was mainly attributed to the rough/porous surface of Ta coating obtained by cold spraying,which is conducive to the heterogeneous nucleation of apatite on it. 关键词：cold spray tantalum coatings SBF soaking test bioactivity

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Microstructure and bioactivity of a cold sprayed rough/porous Ta coating on Ti6Al4V substrate

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