摘要
通过机械球磨系统地研究Al-TiO2-B2O3反应体系粉体的机械力化学与热化学行为。结果表明:Al-TiO2-B2O3复合粉体球磨20h后,中位径可达到4.35μm,形状近乎球形,并生成少量Al2O3、TiB2等新相;机械力化学作用使其在400℃左右就可发生缓慢的固相反应,在670℃时反应最为剧烈;在700℃热处理时,产物大部分为Al2O3和TiB2;在1000℃热处理时,产物全部为Al2O3和TiB2。
The mechanochemical and thermo-chemical behaviors of Al-TiO2-B2O3 reaction system powders were systemicly studied by ball milling.The results show that the Al-TiO2-B2O3 composite powders,objected to 20 h ball milling,whose median-particle-size can reach 4.35 μm,are spherical in shape and generate a few of new phases such as Al2O3 and TiB2.The mechanochemical force can make the reaction happen slowly at about 400 ℃,while fiercely react at 670 ℃.When heat treating at 700 ℃,the products are mostly Al2O3 and TiB2;while heat treating at 1 000 ℃,the products are completely Al2O3 and TiB2.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2010年第5期908-913,共6页
The Chinese Journal of Nonferrous Metals
基金
辽宁省教育厅创新团队项目(2007T069)
