TA2表面微弧氧化-水热合成复合陶瓷膜层结构及其表面能分析  

Structure and Surface Energy of Composite Ceramic Films on TA2 Titanium by Micro-arc Oxidization-Hydrothermal Synthesis

作　　者：徐琳[1] 丁建宁[1,2] 许晓静[1] 李伯全[1] 牛小丫[1] 

机构地区：[1]江苏大学,江苏镇江212013 [2]常州大学,江苏常州213164

出　　处：《稀有金属材料与工程》2016年第8期2080-2085,共6页Rare Metal Materials and Engineering

基　　金：江苏省高校自然科学基金重大项目(11KJA430004);江苏省高校自然科学基金(12KJD460002);江苏大学研究生科研创新计划项目(1291110038)

摘　　要：采用微弧氧化-水热法在纯钛TA2表面制备了含有羟基磷灰石、金红石相Ti O2及锐钛矿相Ti O2的复合陶瓷膜层。观测与分析复合陶瓷膜层的微观形貌、元素成分、粗糙度及相组成,探讨水热时间对其结构及表面能的影响。结果表明,水热处理后膜层表面结晶形核出大量光滑且较规则的条柱状及针状HA颗粒,不同水热时间的膜层表面基本组成元素均为Ti、O、Ca、P。随着水热时间的延长,膜层表面HA晶粒增多,体积增大,表面粗糙度呈现先下降后上升的趋势。膜层表面与水的接触角在116.0o^140.2o之间,均大于纯钛TA2基材与水的接触角77.3o,疏水性能增强;膜层表面能为150.7~282.9 m J·m^(-2),较纯钛TA2基材的27.5m J·m^(-2)提高了4倍以上。粗糙度的改变是导致膜层表面能提高的主要因素。Micro-arc oxidation（MAO） and hydrothermal synthesis（HS） methods were used to prepare composite ceramic films containing hydroxyapatite（HA）,rutile and anatase TiO_2 on the surface of TA2 titanium.The morphology,elemental composition,phase composition and roughness of the films were analyzed,and the effect of hydrothermal time on microstructure and surface energy of the ceramic films on the surface of TA2 titanium was explored.The results demonstrate that after the hydrothermal treatment,large amounts of regular columnar and needle-like HA particles form on the films,which are mainly consisted of such elements as Ti,O,Ca and P.With prolonging the hydrothermal time,the HA particles increase in number and volume,while the surface roughness of the film decreases at first and then increases.The contact angle of water on the films is between 116.0°~140.2°,larger than that of water on TA2 titanium,indicating that hydrophobicity of the film is enhanced.Compared with TA2 titanium,surface energy of the films is between 150.7~ 282.9mJ·m^（-2）,increasing more than four times,which is attributed to the change of its roughness.

关 键 词：纯钛 微弧氧化 水热合成 表面能 羟基磷灰石 

分 类 号：TG174.4[金属学及工艺—金属表面处理]