杨寅臻,董洪峰,李培友,户晓南,刘波波

• 1:陕西理工大学材料科学与工程学院

摘要(Abstract)：

以偏钨酸铵水合物和可食用蔗糖为原料，在液相均相反应体系中制备出前驱体粉末，再采用还原-碳化法合成纳米碳化钨(WC)粉末。分别使用X射线衍射仪和扫描电镜来表征粉末试样的物相组成和微观结构，并且分析了合成机理。结果表明：当合成温度为1400℃时，可以制备出单相WC粉末，当合成温度为1350℃时，可以获得等轴状WC颗粒。然而，合成温度达到1450℃时，出现条状颗粒和异常长大的颗粒。此外，引入过量C源有利于碳化反应的进行，还能通过增加反应接触面积和缩短C原子扩散距离来细化WC颗粒。

关键词(KeyWords)： 纳米碳化钨粉末;还原-碳化法;物相组成;颗粒尺寸

Abstract:

Keywords:

基金项目(Foundation): 陕西省教育厅专项科研计划项目(20JK0563);; 陕西省自然科学基础研究计划青年项目(2020JQ-870)

作者(Author): 杨寅臻,董洪峰,李培友,户晓南,刘波波

DOI: 10.13289/j.issn.1009-6264.2022-0218

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