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机械合金化制备TiB2粉末的机理研究
Mechanism Study of TiB2 Powder Fabricated by Mechanical Alloying
【摘要】 以TiO2、B2O3、Mg为原料,用机械合金化方法制备TiB2+MgO粉末。对所得粉末的结构、粒度及反应机理等进行了分析研究。结果表明:机械合金化制备TiB2和MgO混合粉末的反应机理为机械诱发自蔓延反应;球磨2h得到的混合粉末的平均粒径可达到4μm。
【Abstract】 A mixture of rutile, boron oxide and magnesium was ball-milled together with the intention of inducing a reaction to form titanium diboride. The resultant powders were examined by differential thermal analysis, X-ray diffraction and laser particle size analysis, and the reaction mechanism were discussed. The formation mechanism is self-propagating reactive synthesis induced by mechanical alloying. The particle size of powder after milling 2h is about 4μm.
【关键词】 TiB2；
机械合金化；
陶瓷材料；
自蔓延；
【Key words】 TiB2； mechanical alloying； ceramic； self-propagating reactive synthesis；
【Key words】 TiB2； mechanical alloying； ceramic； self-propagating reactive synthesis；
【基金】 云南省应用基础研究基金资助项目(99E0035M)
- 【文献出处】 机械工程材料 ,Materials For Mechanical Engineering , 编辑部邮箱 ,2004年03期
- 【分类号】TB44
- 【被引频次】7
- 【下载频次】130