Generation of Co Rich Layer on Surface of Sintered Compact of Submicro-grained WC-Co Hardmetal

Autor:	Koji Hayashi, Osamu Terada, Hiroo Ito, Akira Sasaki, Fumihiro Takeuchi, Masaru Kawakami
Rok vydání:	2006
Předmět:	Cooling rate Materials science Mechanical Engineering Alloy Metallurgy Doping Materials Chemistry Metals and Alloys engineering Sintering engineering.material Layer (electronics) Industrial and Manufacturing Engineering
Zdroj:	Journal of the Japan Society of Powder and Powder Metallurgy. 53:172-176
ISSN:	1880-9014 0532-8799
DOI:	10.2497/jjspm.53.172
Popis:	The conditions for the generation of Co rich layer on the surface of sintered compact of WC-Co submicro-grained hardmetals doped with VC and Cr3C2 were investigated. The following were found: (1) At a normal conditions (1563K-3.6ks, 0.07K/s), there were two kinds, i.e., granular and flat Co rich layers, and these layers were generated at medium sintering temperature, and at any C, VC, Cr3C2 and Co contents, and (2) the granular and flat layer were not generated at higher sintering temperature and at higher cooling rate of sintering, respectively, for all kind alloys. Namely, two kinds of Co rich layers were not generated, when the alloy compacts were sintered at high temperature and then rapidly cooled.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::44cf18a068417724387e5f4f6ebe4c38 https://doi.org/10.2497/jjspm.53.172 Zobrazit plný text záznamu