摘要
研究了掺杂ＣａＯ－Ｙ２Ｏ３热压烧结和常压烧结ＡｌＮ陶瓷的性能和显微结构．结果表明：热压烧结ＡｌＮ陶瓷的第二相为Ｙ３Ａｌ５Ｏ１２，常压烧结ＡｌＮ陶瓷的第二相为Ｙ３Ａｌ５Ｏ１２和Ｃａ３Ｙ２Ｏ６；热压烧结ＡｌＮ的第二相体积百分数和晶格氧含量均低于常压烧结；热压烧结ＡｌＮ陶瓷的微观结构良好，其热导率达到２００Ｗ／ｍ·Ｋ．
The property and microstructure of hot-pressure and normal-pressure sintered AlN ceramics doped with CaO-Y2O3 were studied in this paper, The results obtained show that the second phase in the hot-pressure sintered AlN is Y3Al5O12 and that in the normal-pressure sintered AlN is Y3Al5O12 and Ca3Y2O6. The volume fraction of the second phase and the oxygen content dissolved in the AlN lattice of hot-pressure sintered AlN ceramics are lower than that of normal-pressure sintered AlN. The hot-pressure sintered AlN ceramic has good microstructure and high thermal conductivity of 200W/m.K.
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
2002年第2期277-282,共6页
Journal of Inorganic Materials
基金
北京市教委资助项目(00KJ-126)
