直流电弧中TiN粉末的合成及形貌演化  

Morphological Evolution of TiN Powders Synthesized in Direct Current Arc Discharge

作　　者：王彦全[1] 赵衍辉[1] 张剑[2] 王秋实[2] 梁罡[2] 崔启良[2] 

机构地区：[1]白城师范学院物理系,吉林白城137000 [2]吉林大学超硬材料国家重点实验室,长春130012

出　　处：《吉林大学学报（理学版）》2010年第3期487-490,共4页Journal of Jilin University:Science Edition

基　　金：国家自然科学基金(批准号:10304005;50334030);国家重点基础研究发展计划973项目基金(批准号:2005CB724400;2001CB711201);教育部博士点基金(批准号:20070183175);吉林大学科研启动基金(批准号:419080103460);吉林大学超硬材料国家重点实验室开放课题项目基金(批准号:200902)

摘　　要：采用直流弧光放电技术,以金属钛为原料、高纯氮气为工作介质制备了不同形貌的氮化钛(TiN).X射线衍射与选区电子衍射结果表明,产物为纯单相立方氮化钛.透射电子显微镜和扫描电子显微镜测试表明,按温度由高到低分布,在不同温度区域的样品分别由块状、片层堆叠状和多孔状变为亚微米颗粒状和纳米颗粒状,样品最佳合成气压为20kPa.Titanium nitride with various morphologies was successfully synthesized via direct current arc discharge method with titanium metal as the reactant and nitrogen gas as the working medium. X-ray diffraction and select area electron diffraction studies reveal that the product was composed of single-phase cubic titanium nitride with few contaminations. Through transmission electron microscopy and scanning electron microscopy investigations,it was found that with the decreasing of temperature,the samples collected at different temperature zones had undergone the morphology evolution from block,through sheet and porous structures to submicron particles and nanoparticles. An optimum gas pressure of 20 kPa was found for the synthesis of titanium nitride.

关 键 词：氮化钛 弧光放电 形貌演化 多孔结构 

分 类 号：TB332[一般工业技术—材料科学与工程] TB383