| 以铝为助剂通过机械合金化和热处理制备Ti3SiC2 |
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| 引用本文： | 梁宝岩,王明智,穆云超.以铝为助剂通过机械合金化和热处理制备Ti3SiC2[J].粉末冶金材料科学与工程,2011,16(1):101-106. |
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| 作者姓名： | 梁宝岩 王明智 穆云超 |
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| 作者单位： | 燕山大学亚稳材料制备技术与科学国家重点实验室;中原工学院材料与化工学院; |
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| 基金项目： | 燕山大学优秀博士生科学基金资助项目(YSU200902) |
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| 摘 要： | 采用Ti、Si、C单质粉末为原料,添加少量Al元素粉末为助剂,通过机械合金化和热处理制备高纯Ti3SiC2材料。采用XRD和SEM研究该材料的物相组成和显微结构。研究结果表明,机械合金化Ti、Si、C单质混合粉末,会诱发自蔓延反应,生成组成相为TiC、Ti3SiC2、TiSi2和Ti5Si3的粉末与颗粒产物。添加适量的Al元素可消除硅化物,明显促进Ti3SiC2的反应合成。采用Ti、Si、C、Al单质粉末进行机械合金化,可制备出主相为TiC与Ti3SiC2的粉末与颗粒产物。对掺Al机械合金化粉末产物压制后,在900~1 100℃热处理2 h,可制备出纯度大于95%(质量分数)的Ti3SiC2材料,而颗粒产物在900~1 200℃进行热处理,亦可获得纯度为96%的Ti3SiC2材料。但在1 300℃,热处理产物中的Ti3SiC2会发生严重分解,部分分解为TiC和少量硅化物,使产物纯度降低。
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| 关 键 词： | Ti3SiC2 机械合金化 热处理 |
Preparation of Ti3SiC2 by mechanical alloying and heat treatment with Al as aidant agent |
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| LIANG Bao-yan,WANG Ming-zhi,MU Yun-Chao.Preparation of Ti3SiC2 by mechanical alloying and heat treatment with Al as aidant agent[J].materials science and engineering of powder metallurgy,2011,16(1):101-106. |
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| Authors: | LIANG Bao-yan WANG Ming-zhi MU Yun-Chao |
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| Affiliation: | LIANG Bao-yan1,2,WANG Ming-zhi1,MUYun-Chao1,2(1.Key Laboratory of Metastable Materials Science & Technology,Yanshan University,Qinhuangdao 066004,China,2.School of Materials & Chemical Engineering,Zhongyuan University of Technology,Zhengzhou 450007,China) |
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| Abstract: | Using Ti,Si and C powders as raw materials,Ti3SiC2 materials were synthesized by mechanical alloying method with the aid of small amount of Al,and subsequently heat-treated.The phase composition and microstructure were measured by XRD and SEM.The results show that mechanical alloying of Ti,Si and C powders may induce self-propagation reaction.The phase analysis reveals the resultant powders and granules contain TiC,Ti3SiC2,TiSi2 and Ti5Si3 phases.However,addition of Al may restrain the formation silicide,wh... |
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| Keywords: | Ti3SiC2 mechanical alloying heat treatment |
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