Method of immobilizing hydroxyapatite on titanium-based metal substrate and hydroxyapatite-coated metal material

摘要

In the present invention, a titanium 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 1.6-4.0μm, HAp powder is adhered to the entire surface or a part of the surface of the surface-roughened titanium metal substrate at a prescribed ratio, and the HAp powder is sintered to the surface of the metal substrate by retaining the titanium 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.