金属粉末射出成形プロセスによって作製した超硬合金(WC-16mass%Co)の諸特性 [in Japanese] Properties of Cemented Carbide(WC-16mass%Co)by Metal Injection Molding Process [in Japanese]
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Metal injection molding (MIM) process has an advantage of fabricating three dimensional complex shaped components, which alleviates the need for secondary working operations. Therefore, MIM process is hoped to be a suitable production route for the hard materials such as cemented carbides. In this study, the effects of MIM processing variations on the mechanical properties and microstructures of WC-16, mass%., Co alloy were investigated. The results obtained were as follows:<BR>(1) It was very difficult to debind completely and control the carbon content by using N<SUB>2</SUB> gas as the thermal debinding atmosphere after solvent debinding.<BR>(2) An adequate carbon level of the alloy was achieved by thermal debinding in H<SUB>2</SUB> gas atmosphere, and the sintered alloys showed the finer microstructure and higher mechanical properties compared with those of coventional P/M alloys.
- J. Jpn. Soc. Powder Powder Metallurgy
J. Jpn. Soc. Powder Powder Metallurgy 44(3), 253-256, 1997-03-15
Japan Society of Powder and Powder Metallurgy