Abstract
A flame combustion method enables the synthesis of diamond using acetylene-oxygen gas in ambient atmosphere. It has various advantages over other methods, but most diamond films delaminate as a result of thermal stress during cooling. In this study, to improve abrasion resistance of a Co-Cr alloy surface for artificial hip joint, diamond films were synthesized by the flame combustion method. Moreover, in order to archive good adhesion synthesized diamond films on the Co-Cr alloy, surface roughness of the Co-Cr alloy were varied by pretreatment. According to the result, diamond films were able to synthesize on the Co-Cr alloy surface by the flame combustion. The crystallite morphology of synthesized diamond films can be changed.
