摘要
背景:利用微弧氧化生成的纯钛表面陶瓷层特性与电化学参数有着较为密切的关系,目前尚且没有较为统一的标准参数。目的:观察在不同占空比处理条件下,利用微弧氧化技术在纯钛表面形成含钙磷氧化层的结构特性。方法:根据占空比的不同(5%,25%,45%,65%),采用微弧氧化技术处理纯钛试件,使用扫描电镜观察表面形貌,X射线能谱仪分析膜层表面元素,X射线衍射仪分析膜层物相。结果与结论:微弧氧化处理后,纯钛表面形成了均匀多孔的陶瓷层,随着占空比增加,表面膜层变得粗糙不平,微孔直径增加,孔洞分布的不均匀性增加。膜层主要元素为Ti、P、O、Ca4种,且Ca/P随着占空比的增加而增加,当占空比增大到45%时,Ca/P增加变得不明显。膜层表面有金红石型和锐钛矿型TiO2存在。提示占空比增加,微弧氧化膜层微孔直径增加,钙磷元素相对含量增加,锐钛矿型TiO2向金红石型发生转变。
BACKGROUND：It has a relatively close relationship between micro-arc oxidation of titanium surface characteristics and electrochemical parameters in recent years.Up to now,there are no uniform standard parameters.OBJECTIVE：To study the effects of different duty ratios on the surface characteristics of micro-arc oxidized titanium which containing calcium and phosphorus.METHODS：Ceramic coating was formed on the titanium surface by using micro-arc oxidation in different duty ratios（5%,25%,45%,65%）.The surface of the samples was observed and analyzed by scanning electron microscope,energy dispersive spectrum and X-ray diffraction.RESULTS AND CONCLUSION：After treating by micro-arc oxidation,the porous ceramic coating was formed on the titanium surface.The higher the pulse was,the rougher and more porous the oxidation film was,the larger the pore diameter was and the fewer in the number.The oxidation film was composed of Ti,P,O,Ca elements.The ratio of Ca and P in the coating increased according to the pulse ratio extending until it reached 45%.The coatings contained rutile TiO2 and anatase TiO2.With the increasing of duty ratios,the larger the pore diameter is and the more the relative content of the calcium and phosphorus in the titanium surface,and part of the rutile TiO2 has changed into anatase TiO2.
出处
《中国组织工程研究》
CAS
CSCD
2012年第12期2203-2206,共4页
Chinese Journal of Tissue Engineering Research
基金
国家自然科学基金项目(81170998)~~
作者简介
蒋颖,女,1985年生,广西壮族自治区桂林市人,南方医科大学在读硕士,主要从事口腔种植临床研究.gyjyt901@163.com｜
周磊,博士,主任医师,教授,博士生导师,南方医科大学附属口腔医院,广东省口腔医院,广东省广州市 510280 zho668@263.net
