プラズマ溶射ハイドロキシアパタイトコーティング材の界面強度評価

抄録

View of improvement of Quality of life (QOL) for senior citizens, implant treatment that embed prosthesis into a living body has advanced as a method of treating for deterioration or a lesion part. Recently, addition of Hydroxyapatite (Ca₁₀(PO₄)₆(OH)₂, HAp) coatings onto titanium alloy has been developed to reduce duration of treatment and improve strength of treated part. However, adhesion property between such coatings / substrates isn't well known. The purpose of this study is to establish evaluation method of adhesion property for such coatings system. In this study, plasma-sprayed HAp coating specimens that subjected some machining process were prepared. Adhesion strength of these specimens was investigated by using tensile adhesion strength test. The influence of post heat treatment on adhesion strength was discussed, through evaluation of both mechanical properties of HAp coating and tensile adhesion strength between HAp coatings and titanium alloy substrates.