文献类型：期刊文献

中文题名：莫来石晶须制备新工艺与生长机理

英文题名：New Growth Technology and Mechanism of Mullite Whiskers

作者：袁建君[1];刘智恩[1];韩玉[1]

机构：[1]华东理工大学无机材料系

年份：1996

卷号：11

期号：1

起止页码：101

中文期刊名：无机材料学报

外文期刊名：Journal of Inorganic Materials

收录：CSTPCD;;Scopus;北大核心:【北大核心1992】；CSCD:【CSCD2011_2012】；

基金：华东理工大学测试基金

语种：中文

中文关键词：莫来石;晶须;制备;生长机理;陶瓷复合材料

外文关键词：mullite whiskers; A1_2O_3-SiO_2 glass powders; preparation technology; growth mechanism

摘要：本文首次提出了用Ａｌ２Ｏ３－ＳｉＯ２玻璃粉高温热处理制取莫来石晶须的新工艺．采用ＸＲＤ、ＳＥＭ和ＴＥＭ等手段研究了热处理温度制度及气氛对莫来石晶须生长的影响，确定了制备莫来石晶须的最佳工艺参数，所得莫来石晶须的直径为０．４～１．２Ｐｍ、长径比为１０～４０，其生长方向为ｃ轴方向，生成物中莫来石晶须的含量接近９８ｖｏｌ％．探讨了用Ａｌ２Ｏ３－ＳｉＯ２玻璃粉制取莫来石晶须的生长机理．
A new growth technology of mullite whiskers obtained by using A12O3-SiO2 glass powders was presented. The effect of heat-treatment temperature and reacting gas on the growth of mullite whiskers was studied by XRD, SEM and TEM. From the experimental results, a precipitation growth technology of mullite whiskers was obtained. Mullite whisker about 0.4￣l.2 pm in diameter and in 10￣40 aspact ratio was prepared, the whisker grew along the c-axis direction, and its content in products was about 98 vol%. Besides, growth mechanism of mullite whisker obtained by using A12O3-SiO2 glass powders was discussed.