การปรับปรุงสมบัติเชิงกลของวัสดุชีวภาพเชิงประกอบไฮดรอกซีแอปาไทต์–อะลูมินา ด้วยอนุภาคเซอร์โคเนีย

Abstract

Abstract

In this work, the effect of  ZrO₂ additions on mechanical properties of  HAp-Al₂O₃ based composite are investigated. HAp  were mixed with 0, 20, 25 and 30 vol% Al₂O₃ to obtain various  HAp-Al₂O₃ based composite  Then (4Y)ZrO₂ additive was mixed in the base composite with 0, 15, 20 and 25 vol%  HAp-Al₂O₃/ ZrO₂ composite were sintered at 1300, 1400 and1500^oC. Density and phase of sintered composite were characterized. Flexural strength was also measured. As the result, the highest flexural strength was obtained from 20 vol% ZrO₂ sintered at 1,500^oC.