摘要
用立式硅碳管炉进行羟基磷灰石 (简称 HAP)陶瓷的常压烧结试验 ,探讨了生坯成型压力与生坯密度和烧结体密度的关系 ,以及烧结温度 ,恒温时间对烧结程度的影响 .找出最适宜的生坯成型压力是 30 0 MPa,最佳温度是 1 30 0℃ ,最佳烧结恒温时间是 4 h.在最佳烧结条件下烧结的 HAP陶瓷 ,烧结密度达 2 .81 g/cm3,相对密度达 89% .SEM照片显示为紧密排列的六边形晶粒的集合体 .XRD图谱显示主晶相为 HAP,含少量的 α TCP.在高温箱式硅碳棒炉和硅钼棒炉中烧结的 HAP陶瓷大圆片 ,用三点法测得其抗弯强度分别为59.89MPa和 58.1
WT5,5”BZ]Hydroxyapatite(HAP) ceramic was sintered in a vertical pipefurnace with silicon carbide.The relation between sintered density and proceeding conditions was studied.The appropriate conditions were shown:The green tablets were shaped under 300 MPa uniaxially and sintered up to 1 300 ℃ then kept at that temperature for 4 hours.The sintered density of HAP ceramics was 2.81 g/cm 3(relative density 89%).Under the conditions as above,the bending strength of two batch of HAP ceramics sintered in the box furnace was 59.89 MPa and 58.16 MPa respectively by three point testing.
出处
《广西大学学报（自然科学版）》
CAS
CSCD
2001年第2期79-82,共4页
Journal of Guangxi University（Natural Science Edition）
基金
广西壮族自治区教委资助! ( 1 994年 )
