Study on Surface Modification of Biomedical Ti Alloy

Abstract

This study is to enhance the bonding strength of the hydroxyapatite powder on titanium alloy bulk surface by the sintering due to advance the characteristic as biomaterial of titanium alloy. It is necessary to find out concretely the clue to the solution about following two problems. One is improvement in sintering properties and the strength of hydroxyapatite itself. Improvement in the properties and strength of hydoroxyapatite sintering sample was realized by addition of binders. In especial, sintered sample added in Na_2CO_3 was more effective for fracture toughness. Other one is to obtain the good bonding condition of titanium alloy bulk and hydroxyapatite powder. In order to obtain high bonding strength, the pre-treatment to titanium alloy bulk. As a result, titanium alloy bulk with maceration pre-treatment into 1M-HaOH showed high bonding property. Moreover, the specimen of titanium alloy bulk with the maceration SBF treatment showed a little better bonding property than only NaOH treatment.