文档介绍：
氧化钨原料在制备超细碳化钨粉末中的
作用#
唐建成,雷纯鹏*
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(南昌大学材料科学与工程学院,南昌 330031)
摘要:研究了氢还原/碳化制备超细碳化钨粉末过程中不同氧化钨原料对超细钨粉和碳化钨
粉性能的影响。结果表明,碳化钨粉末的性能与氧化钨原料密切相关,在普通黄钨、气流破
碎黄钨和紫钨 3 种原料中,以气流破碎黄钨制备的碳化钨粉末性能最好,其平均粒度约为
148nm。碳化钨的晶粒聚集和异常粗大颗粒的产生主要是由于碳化过程中团聚纳米钨的烧结
合并增粗,具有疏松、多孔形貌结构的细小氧化钨颗粒更容易制备出结构较疏松、分散性较
好的超细钨粉和碳化钨粉。
关键词:金属材料;粉末冶金;超细碳化钨粉;氧化钨原料
中图分类号:TF123
Effects of tungsten oxide raw materials on the preparation of
tungsten carbide superfine powders
TANG Jiancheng, LEI Chunpeng
(School of Materials Science and Engineering, Nanchang University, NanChang 330031)
Abstract: The effects of tungsten oxide raw materials on the properties of tungsten carbide
superfine powders prepared by hydrogen reduction/carbonization. It is shown that the quality of
tngsten carbide powders dependes on tungsten oxide raw materials and airflow breakup yellow
tungsten oxide is more suitable for the preparation of tungsten carbide superfine powders than
common yellow tungsten oxide and violet tungsten oxide. High quality tungsten carbide superfine
powders with the mean particle size of 148nm are prepared using airflow breakup yellow tungsten
oxide as raw material. The grain aggregation and abnormal coarse grain of tungsten carbide
powders are mainly due to the burning binding of agglomeration particle of tungsten superfine
powders during carbonization process. Homogenous tungsten and