Pr_2Ti_2O_7织构陶瓷的等离子活化烧结（英文）  

Textured Pr_2Ti_2O_7 Ceramics Prepared by Plasma Activated Sintering

作　　者：高潇逸 张联盟[1] 王传彬[1] 沈强[1] 姜敬陆 

机构地区：[1]武汉理工大学,材料复合新技术国家重点实验室,武汉430070 [2]湖北新华光信息材料有限公司,湖北襄阳441057

出　　处：《硅酸盐学报》2017年第2期323-326,共4页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金(51272195,51521001);111计划(B13035)

摘　　要：采用等离子活化烧结技术,制备了具有(100)择优取向的钛酸镨(Pr_2Ti_2O_7)织构陶瓷,研究了烧结工艺对其显微结构、织构化及铁电性能的影响。结果表明:经过两步等离子活化烧结后,Pr_2Ti_2O_7晶粒呈片层状平行于样品表面规则排列,沿(100)晶面取向生长,其织构度因子为0.72且结构致密,外观完整规则。该织构化陶瓷具有较强的铁电各向异性,沿平行于(100)晶面生长方向具有更高的剩余极化强度。Textured Pr2Ti2O7 ceramics with the （100） preferred orientation were prepared via plasma activated slnterlng （PAS）. The influence of PAS process on the microstructure, texturization and ferroelectric properties of the ceramics was investigated. The results indicate that the Pr2Ti2O7 ceramics prepared by the two-step PAS show a significant （100） preferred orientation with a great Lotgering factor of 0.72. The plate-like grains prefer to grow along the direction parallel to the samples＇ surface, and the ceramics are dense and complete. The ferroelectric properties of the Pr2Ti2O7 ceramics are anisotropic due to the textured structure. The remanent polarization parallel to the （100）-plane direction is greater than that along other directions.

关 键 词：钛酸镨陶瓷 织构化 等离子活化烧结 铁电性能 

分 类 号：TQ174.75[化学工程—陶瓷工业]