(辽宁工程技术大学 材料科学与工程学院，阜新 123000)
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20 h后，中位径可达到4.35 μm，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1 000 ℃热处理时，产物全部为Al2O3 和TiB2。
关键字: Al-TiO2-B2O3反应体系；机械力化学；热化学；粉体
Al-TiO2-B2O3 reaction system
（College of Materials Science and Engineering, Liaoning Technical University, Fuxin 12300, China）
Abstract: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.
Key words: Al-TiO2-B2O3 reaction system; mechanochemical; thermo-chemical; powders
