摘要
以ＡｌＴｉＯ２反应体系为基础，添加适量石墨粉，压制后在不同温度下进行反应烧结，从而确定了获得反应完全的Ａｌ２Ｏ３ＴｉＣ／Ａｌ铝基复合材料的烧结工艺参数，并对该复合材料的组织性能及反应机理进行了分析讨论。结果表明：碳的加入可完全抑制条状和大块状Ａｌ３Ｔｉ相的形成；ＡｌＴｉＯ２Ｃ体系在１２００℃反应烧结后，可制得硬度较高的Ａｌ２Ｏ３ＴｉＣ／Ａｌ原位复合材料，其显微组织中Ａｌ２Ｏ３和ＴｉＣ颗粒尺寸小于２μｍ。
An Al2O3TiC/Al insitu composites prepared by hightemperature reaction sintering of the AlTiO2C system was investigated, and the effects of process parameters on the microstructure of the Al2O3TiC/Al composites were discussed. The results showed that the formation of the coarse lath or block Al3Ti compound in the composites can be completely inhibited by carbon additions, and the size of the Al2O3 and TiC particles in the composites is normally less than 2 m after AlTiO2C samples are sintered at 1 200 .
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
1999年第2期313-318,共6页
The Chinese Journal of Nonferrous Metals
基金
国家教委资助项目
关键词
反应烧结
铝基
复合材料
显微组织
原位合成
insitu reaction synthesisreaction sinteringaluminum matrix compositesmicrostructure
