摘要
以ＺｒＯＣｌ２·８Ｈ２Ｏ为起始原料，通过溶胶－凝胶技术制备了ＺｒＯ２陶瓷膜。使用ＤＴＡ、ＸＲＤ以及ＳＥＭ等测试手段对其结构进行了分析，同时研究了ＳｉＯ２对ＺｒＯ２陶瓷膜烧结行为的影响。结果表明：ＺｒＯ２陶瓷膜具有高度的择优取向特征；膜烧结过程存在ＺｒＯ２晶相转变，４３０°Ｃ左右ＺｒＯ２四方相开始析晶形成，５５０～７５０°Ｃ温度区域逐渐转变为单斜相；引入ＳｉＯ２后ＺｒＯ２四方相一直到１３５０°Ｃ才转变为单斜相，表现为引入ＳｉＯ２抑制了ＺｒＯ２晶相转变，提高了ＺｒＯ２陶瓷膜的结构完整性。
ZrO 2 ceramic membrane was derived from wet chemistry method using ZrOCl 2·8H 2O as starting material.The structure of ZrO 2 ceramic membrane was characterized by DTA,XRD and SEM analysis.The influence of introduction of SiO 2 into ZrO 2 matrix upon the sintering behavior of ZrO 2 ceramic membrane was also studied.The results showed that ZrO 2 ceramic membrane was highly preferably oriented in the direction of (111) plane.During sintering,there occurred the phase evolution of tetra to mono ZrO 2,which was suppressed by introducing SiO 2 into ZrO 2 matrix indicating that the phase transformation of tetra to mono ZrO 2 was greatly affected by the second phase SiO 2.
出处
《华东理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
1997年第3期349-355,共7页
Journal of East China University of Science and Technology
基金
国家自然科学基金
关键词
溶胶-凝胶技术
晶相转变
氧化锆陶瓷
膜
制备
ZrO 2 ceramic membrane
wet chemistry method
phase evolution
structural integrity
