High-gravity combustion synthesis and in situ melt infiltration: A new method for preparing cemented carbides

作者：Liu, Guanghua^*; Li, Jiangtao; Yang, Zengchao; Guo, Shibin; Chen, Yixiang

来源：Scripta Materialia, 2013, 69(8): 642-645.

DOI：10.1016/j.scriptamat.2013.07.022

• Cemented carbide
• High-gravity combustion synthesis
• In situ melt infiltration
• Mechanical properties

A new method of high-gravity combustion synthesis and in situ melt infiltration is reported for preparing cemented carbides, where hot nickel melt is in situ synthesized from a highly exothermic combustion reaction and then infiltrated into tungsten carbide powder compacts. The as-prepared sample showed a homogeneous microstructure, and its relative density, hardness and flexural strength were 94.4%, 84 HRA and 1.49 GPa, respectively. Compared with conventional powder metallurgy approaches, high-gravity combustion synthesis offers a fast and furnace-free way to produce cemented carbides.

• 出版日期2013-10
• 单位中国科学院理化技术研究所