摘要
选用6种配方进行研究,通过XRD、SEM和TGA研究了各配方在升温过程中的物相组成及变化,详细记录了实验中各试样的形貌变化,讨论了相关物质对液相生成温度的影响。研究发现,氟化钙-氧化钇-碳酸锂为最佳体系,氟化钙类似化合物可促进碳酸盐的分解,生成的氧化锂(特定的碱性氧化物)可降低液相生成温度(最低共熔温度),从而降低液相生成温度,促进烧结进程。
In this paper,six kinds of Aluminum nitride′s low-temperature sintering aids were investigated.Phases′composition and transformation at various temperature were studied by XRD,SEM and TGA.At the same time,appearance variation was taken down in detail and the influence of certain substances on liquid phase forming temperature was discussed.The results show that CaF_2-Y_2O_3-Li_2CO_3 was the best system;CaF_2 could stimulate carbonate decompositions,while mesne resultant Li_2O (or certain basic oxide)might reduce liquid phase forming temperature, and sequentially promoted low-temperature sintering.
出处
《无机盐工业》
CAS
2004年第1期17-20,共4页
Inorganic Chemicals Industry
基金
中国矿业大学基金 (0E1 0 6 4)
科技部中小企业创新基金 (0 0C2 6 2 1 440 0 3 72 )
关键词
氮化铝陶瓷
低温烧结
助剂
液相
物相分析
aluminum nitride ceramics
liquid phase
sintering aids
phase analysis
