%0 Journal Article
%T Characteristics of grain growth of microarc oxidation coatings on pure titanium
%A Wang Jian-Bo
%A Wu Han-Hua
%A Li Quan-Jun
%A Li Zhe-Kui
%A Gu Guang-gui
%A Lii Xian-Yi
%A Zheng Wei-Tao
%A Jin Zeng-Sun
%A <br>汪剑波
%A 吴汉华
%A 李全军
%A 李哲奎
%A 顾广瑞
%A 吕宪义
%A 郑伟涛
%A 金曾孙
%J 中国物理 B
%D 2005
%I 
%X Grainy titania coatings are prepared by microarc oxidation on pure titanium (TA2) substrates in a Na$_{2}$SiO$_{3}$--NaF electrolytic solution. The coating thickness is measured by an optical microscope with a CCD camera. Scanning electron microscope (SEM) and x-ray diffraction (XRD) are employed to characterize the microstructure and phase composition of coatings. The results show that the coating thickness increases linearly as the treatment time increases. The coatings are mainly composed of anatase and rutile (TiO$_{2})$. With the increase of treatment time, the predominant phase composition varies from anatase to rutile, which indicates that phase transformation of anatase into rutile occurs in the oxidizing process. Meanwhile, the size of grains existing on the coating surface increases and thus the surface becomes much coarser.
%K microarc oxidation
%K grain growth
%K microstructure
%K phase composition<br>相组成
%K 微结构
%K 晶粒生长
%K 微弧氧化
%K 钛
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=CD8D6A6897B9334F09D8D1648C376FB4&aid=999FEB3C85CD2A3A1EA93BBB9326066A&yid=2DD7160C83D0ACED&vid=F3583C8E78166B9E&iid=59906B3B2830C2C5&sid=5B656E9A4096A94C&eid=AEF4E192E58CE217&journal_id=1009-1963&journal_name=中国物理&referenced_num=0&reference_num=17