Phase Composition of Sputtered Film from a Mixture Target of Hydroxyapatite and Strontium-apatite

作     者：K.Ozeki T.Hoshino H.Aoki T.Masuzawa 

作者机构：Department of Mechanical Engineering Ibaraki University International Apatite Co. Ltd. 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2013年第29卷第1期

页      面：1-6页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0817[工学-化学工程与技术] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 070301[理学-无机化学] 0702[理学-物理学] 

基　　金：partially supported by the Japan Scienceand Technology Agency  A-STEP (AS232Z01193F) 

主　　题：Sputtering Hydroxyapatite Strontium Strontium-apatite Crystal phase 

摘      要：To obtain an Sr-substituted hydroxyapatite thin film, sputter-coating was performed on a cellulose filter acting as a substrate from the mixture target of hydroxyapatite （HA） and strontium-apatite （SrAp） at an Ar pressure of 0.5-5.0 Pa. The ratio of the SrAp in the mixture target was varied from 25% to 100%. After coating, the films were heated at 700 ℃ to remove the cellulose filter substrate, and the crystalline phases were identified by X-ray diffraction （XRD）. The sputter-coated film was identified as the Sr-substituted /3-tri-calcium phosphate （TCP） and the Sr-substituted/3-calcium pyrophosphate （CPP） as well as the Sr-substituted HA. The weight ratio of the Sr-substituted HA decreased with increasing Ar pressure or with an increasing ratio of SrAp to HA in the target. The average Sr/（Ca ＋ Sr） molar ratio in the film was 1.9%-3.5% slightly lower than the initial SrAp ratio of the target, and the ratio was not influenced by the Ar pressure. In the （Sr ＋ Ca）/P ratio, the ratio decreased while increasing the SrAp ratio in the target.