LaCrO_3-ZrO_2材料的性能和显微结构  

Microstructure and Performance of LaCrO_3-ZrO_2 Materials

作　　者：刘永杰[1] 孙杰璟[1] 朱新德[2] 李胜利[2] 

机构地区：[1]济南大学材料学院,山东济南250022 [2]山东大学材料学院,山东济南250000

出　　处：《稀土》2007年第5期64-67,共4页Chinese Rare Earths

摘　　要：讨论了LaCrO3-ZrO2材料的性能和显微结构。通过测定试样的体积密度、热震性、常温电阻率,并借助电镜观察、微区分析等手段,对LaCrO3-ZrO2烧结材料的显微结构性进行了探讨。结果表明,在LaCrO3材料中,添加氧化锆后,对烧结体的抗热震性,电阻率及其显微结构均有一定的影响。可使材料烧结体的结构致密,晶粒发育良好且大小均匀,常温电阻率增加,热震稳定性改善。Microstructure and performance of LaCrO3--ZrO2 materials have been studied by measuring the bulk density,resistivity and thermal shock resistance of specimens and using SEM and ED micro--zone analyzing. The results indicate that the addition of ZrO~ in LaCrO3 can help sintering material obtain good bulk density, the crystal growth is good and crystal grain dimension is well--proportioned, the resistivity of specimens increases and thermal shock resistance of specimens is improved when zircona adding quantity increasing.

关 键 词：铬酸镧 氧化锆 热震稳定性 材料性能 

分 类 号：TQ133.3[化学工程—无机化工]