碳源对自蔓延高温合成TiC粉末的影响  

Effect of carbon sources on TiC powder by self-propagating high temperature synthesis

作　　者：陈怡元[1] 邹正光[1] 龙飞[1] 

机构地区：[1]桂林工学院有色金属及材料加工新技术教育部重点实验室,广西桂林541004

出　　处：《桂林工学院学报》2006年第4期534-537,共4页Journal of Guilin University of Technology

基　　金：广西科学研究与技术开发计划项目(0443001-2);广西"新世纪十百千人才工程"基金资助项目(2002210);广西教育厅重点基金(桂教科研2003-22)资助项目

摘　　要：在氩气保护下用钛、碳元素通过自蔓延高温合成(SHS)工艺制备了碳化钛,采用X射线衍射(XRD)和扫描电子显微(SEM)技术,分析检测了采用不同碳源合成的碳化钛的物相组成和微观结构.结果表明,钛与碳元素粉末的自蔓延合成产物均为碳化钛相,产物形貌因碳源的不同而有所不同,以石墨为碳源所合成的TiC晶型比较完整,粒度相对粗大、颗粒均匀性相对较好,团聚较少,更接近化学计量比.With the protection of argon gas, TiC powder is synthesized with Ti and C elements by selfpropagating high temperature synthesis （SHS）. The component and microstructure of as-synthesized TiC powders are analyzed and investigated through XRD and SEM. The results show that all the products are the pure TiC particles despite of different C sources, including graphite, active carbon and carbon black. But the TiC particles display various shapes because of different C sources. TiC particles with graphite as the C source indicate the most integrated crystal structure with the closest Ti and C stoichiometric proportion. The particles show comparatively biggest sizes with even distribution.

关 键 词：碳源 自蔓延高温合成 碳化钛 

分 类 号：TG732[金属学及工艺—刀具与模具] TQ127.1[化学工程—无机化工]