ARTIFICIAL ARTICULATING CAPITAL BALL MADE OF TI OR TI ALLOY WITH EXCELLENT ABRASION RESISTANCE AND MANUFACTURE THEREOF

摘要

PURPOSE:To provide an artifical articulating capital ball made of Ti or Ti alloy and having excellent abrasion resistance and a simple manufacturing method therefor. CONSTITUTION:(1) An artificial articulating capital ball made of Ti or Ti alloy with excellent abrasion resistance and having an oxygen diffusion solid hard layer on its surface and (2) a method for casting the artificial articulating capital ball made of Ti or Ti alloy and having excellent abrasion resistance whereby Ti or Ti alloy is casted into a zirconia ceramics mold having a composition comprising one or two kinds of alumina (2 to 50wt.%) and titania (2 to 30wt.%) and the rest zirconia in such a manner that the total amount of the alumina and the titania does not exceed 50wt.%.