METHOD FOR FIXING HYDROXYAPATITE TO TITANIUM METAL SUBSTRATE, AND HYDROXYAPATITE-COATED METAL MATERIAL

摘要

In the present invention, a titanium-based metal substrate formed from pure titanium or a titanium alloy is subjected to a surface roughening treatment such that that surface roughness Ra thereof reaches 1.6-4.0 µm, HAp powder is adhered to the entire surface or a part of the surface of the surface-roughened titanium-based metal substrate at a prescribed ratio, and the HAp powder is sintered to the surface of the metal substrate by retaining the titanium-based metal substrate, to which the HAp powder has been adhered, at a prescribed sintering temperature for 3-11 hours in an atmospheric, nitrogen gas, argon gas, oxygen gas or carbon dioxide gas atmosphere.