TiB_2粉料的合成与纯化研究  

Study on Synthesis and Purification of Titanium Diboride Powder

作　　者：罗学涛[1] 谢小林[1] 邓克明[1] 

机构地区：[1]南昌航空工业学院材料科学与工程系,江西南昌330034

出　　处：《南昌航空工业学院学报》2001年第1期6-10,共5页Journal of Nanchang Institute of Aeronautical Technology（Natural Science Edition）

摘　　要：基于SHS还原反应合成TiB2 混合粉料 ,研究了酸洗条件对TiB2 纯度的影响。实验结果表明 ,TiO2 B2 O3 Mg三元系统的化学反应由两部分组成 ,第一部分由金属Mg还原出B和Ti单体 ,第二部分由两种单体化合反应生成TiB2 。TiB2 粉料的纯度主要取决于酸洗条件。提高盐酸浓度、增加酸过量和延长酸洗时间可以提高TiB2 粉料的纯度 。Based on SHS reductive reaction,TiB 2 mixed powder was synthesized,and the effects of acid washing conditions on the purity of TiB 2 powder were investigated.The experimental results showed that the chemical reaction of the TiO 2 B 2O 3 Mg system consisted of two parts.In the first step,the elements of B and Ti were reduced by Mg powder,and secondly,the TiB 2 was formed by Chemical combination of the two monomer elements.The purity of TiB 2 powder mainly depends on acid washing conditions.With the concentration of hydrochloric acid and amount of excessive acid increasing and the acid washing time prolonging,the purity of TiB 2 powder increase.Moreover,with the acid washing temperature rising up,the acid washing velocity can be considerably quickened.

关 键 词：粉料 还原反应 纯化过程 二硼化钛陶瓷 合成 

分 类 号：TF123[冶金工程—粉末冶金] TQ174.758[冶金工程—冶金物理化学]