摘要
用等离子快速烧结(SPS)法烧结制备碳化钨/钢基复合材料,然后用真空管式炉对其进行界面重熔,研究了重熔温度对界面反应的影响以及界面反应区的生成机制。结果表明,界面反应可在固态条件下发生,且随着重熔温度的提高界面反应区的宽度呈增大的趋势。界面反应的产物为Fe3W3C,其形成过程为:在约1314℃碳化钨颗粒内部发生反应2WC→W2C+C,然后在约1341℃发生W2C与基体的反应生成Fe3W3C。
A tungsten carbide particles reinforced steel matrix composite was fabricated by spark plasma sintering （SPS） technique, and then the composite was remelted in a vacuum tube furnace. The effect of remelting temperature on interface reaction was investigated meticulously. The results show that the interface reaction could occur when the matrix was still in solid state, the thickness of interface reac- tion layer increased with the increasing temperature. The interface reaction product, Fe3W3C, was result- ed from the following two step reactions： firstly the reaction 2WC→W2C＋C would occur within tungsten carbide particles at 1314℃, then the W2C would react with Fe to produce Fe3W3C at temperatures above 1341℃.
出处
《材料研究学报》
EI
CAS
CSCD
北大核心
2014年第3期191-196,共6页
Chinese Journal of Materials Research
基金
国家自然科学基金51241002和51361019资助项目~~
作者简介
本文联系人：李祖来
