(遼寧工程技術(shù)大學(xué) 材料科學(xué)與工程學(xué)院，阜新 123000)
摘 要: 通過機(jī)械球磨系統(tǒng)地研究Al-TiO2-B2O3反應(yīng)體系粉體的機(jī)械力化學(xué)與熱化學(xué)行為。結(jié)果表明：Al-TiO2-B2O3復(fù)合粉體球磨20 h后，中位徑可達(dá)到4.35 μm，形狀近乎球形，并生成少量Al2O3 、TiB2等新相；機(jī)械力化學(xué)作用使其在400 ℃左右就可發(fā)生緩慢的固相反應(yīng)，在670 ℃ 時反應(yīng)最為劇烈；在700 ℃熱處理時，產(chǎn)物大部分為Al2O3和TiB2；在1 000 ℃熱處理時，產(chǎn)物全部為Al2O3 和TiB2。
關(guān)鍵字: Al-TiO2-B2O3反應(yīng)體系；機(jī)械力化學(xué)；熱化學(xué)；粉體
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
