チタン又は酸化チタン(IV)基板にヒドロキシアパタイトを熱プラズマで溶射した層の付着性

概要

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Hydroxyapatite(HAp)was sprayed onto titanium substrates in argon-hydrogen thermal plasma or onto titanium(IV)oxide substrates in argon-oxygen thermal plasma. In the latter case, no adhesive strength by a tensile test could be measured because of high fragility of the titanium(IV)oxide. Comparison of the width of peeled-off layers by a scratch test suggested a higher adhesive strength of HAp layers sprayed onto titanium(IV)oxide than onto titanium substrates. It seemed that the surface oxide layer of the titanium substrate would give a positive contribution to adhesion. In both the above experiments, adhesive strength increased with the substrate temperature up to 1130℃ and the maximum adhesive strength was 19.2 MPa for layers sprayed onto titanium.
社団法人日本セラミックス協会の論文
2000-09-01