刚玉瓷指痕缺陷的研究  

STUDY ON FINGER DEFECTS OF CORUNDUM CERAMICS

作　　者：高如琴 

机构地区：[1]河南省耕生高温材料有限公司,郑州450001

出　　处：《中国陶瓷工业》2002年第5期29-32,共4页China Ceramic Industry

摘　　要：本文采用两种不同Al2 O3粉为原料 ,结合Al2 O3预烧与材料的生产工艺 ,对刚玉瓷的指痕缺陷及其对材料性能的影响进行了研究。结果发现 :Al2 O3粉预烧温度不匀时 ,部分颗粒 (γ -Al2 O3)周边存在层错缺陷。激活能的存在 ,使粉体中颗粒粘连 (团聚 ) ;该团聚体在坯体及烧结体中的残留直接引起烧结体中的结构缺陷。由Al2 O3预烧温度高且均匀的粉体制备材料 。Finger defects of corundum ceramics and effects of material behavior were studied utilizing two different Al 2O 3 preferring and material production technology.The effects were found interparticle bonting(aggregate) because of unequal temperature during Al 2O 3 preferring and laminar imperfection around partial particle(γ-Al 2O 3) and activation energy.The aggregate persisted in body and sintering body conduced structure defects during sintering.The material produced with the powder,which was high and homogeneous temperaure of Al 2O 3 preferring can secure corundum ceramics with good behavior.

关 键 词：刚玉瓷 指痕缺陷 研究 氧化铝 预烧 材料性能 团聚性 

分 类 号：TQ174.75[化学工程—陶瓷工业]