Technology of Formation of Mesostructures in Sintered WC–Co and WC–Ni Solid Alloys.

Autor:	Matviichuk, О. О., Andreiev, І. V., Hnatenko, І. О., Ievdokymova, О. V., Davydenko, S. А., Tsysar, М. О.
Předmět:	COBALT alloys WEAR resistance MICROHARDNESS TUNGSTEN carbide
Zdroj:	Materials Science; Sep2022, Vol. 58 Issue 2, p175-179, 5p
Abstrakt:	For the first time, we demonstrate that the mesostructural WC–Co or WC–Ni hard alloy can be obtained as a result of ordinary liquid-phase sintering at temperatures from 1290°C to 1370°C and isothermal holding for 10–20 min. The hardness of alloys with mesostructure and a cobalt content decreasing from 28 to 20 wt.%, increases from 77.5 to 81 HRA, while the microhardness of mesoelements may increase from 4.76 to 6.3 GPa. The mesostructural WC–Co alloys are efficient in the production of mining tools for which it is necessary to guarantee high wear and impact resistance under alternating loads. At the same time, WC–Ni alloys are efficiently used in heavily loaded friction couples. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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