摘要
利用微弧氧化方法在硅酸盐溶液中在Ti6Al4V合金表面生长出一层厚度达50μm的陶瓷氧化膜,并用X射线衍射(XRD)、扫描电镜(SEM)初步研究了氧化膜的组织结构。该氧化膜由大量金红石型TiO2和SiO2非晶相及少量锐钛矿型TiO2相组成,且膜内层金红石含量比膜外层高。这些相都是由微弧区熔融物快速冷却形成的。硅元素已扩散到膜内层,Ti、Si元素在膜内部分布是不均匀的。
A ceramic oxide coating with about 50μm was obtained on Ti 6Al 4V alloy surface by microarc oxidation in silicate solution,and its microstructure was investigated using X ray diffraction(XRD) and scanning electron microscope(SEM).This coating consists of a large amount of rutile type TiO 2 phase and amorphous SiO 2 phase,and a little anatase type TiO 2 phase,the rutile content in the internal coating is highter than that in external coating.These phases come from rapid cooling of the molten coating in microarc zone.Si element has diffused into the internal layer of coating,the Ti,Si distributions in the coating are non uniform.
出处
《金属热处理》
EI
CAS
CSCD
北大核心
2000年第2期5-6,共2页
Heat Treatment of Metals
基金
国家"8 63"计划 !( 863 71 5 0 1 1 0 2 0 )
国家自然科学基金!( 5 980 1 0 0 3)
北京市科技院萌芽计划资助
关键词
钛合金
微弧氧化
组织结构
陶瓷膜
titanium alloy
microarc oxidation
microstructure
ceramic coating
