Thermal-mechanical process in producing high dispersed tungsten-copper composite powder
发布时间：2021-07-17
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所属单位：中南大学
发表刊物：International Journal of Refractory Metals and Hard Materials
关键字：thermal-mechanical process，tungsten-copper， reduction，BET specific area，particle size distribution
摘要：In this study, the reduction mechanism of tungsten-copper oxide precursors WO3, CuWO4 as well as the mixtures of these two components were analyzed in detail by TGA-DTA, SEM as well as particle size distribution, etc. The results showed that after milling for the oxide precursors in alcohol the reduced tungsten-copper composite powder showed better particle size distributions than the other two processes of dry milling and water milling. Surface modification by nitrogen showed to be effective in the anti-oxidation of the newly reduced powder because the absorption of nitrogen in the particle surface inhibits further oxidation. The final sintered parts of the reduced powder at 1200 degrees C and 60 min showed to have an extremely high relative density than the traditional process
论文类型：期刊论文
学科门类：工学
一级学科：材料科学与工程
文献类型：J
卷号：26
期号：6
页面范围：540-548
是否译文：否
发表时间：2008-06-17
收录刊物：SCI