ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Hardmetal alloys are processed by liquid phase sintering, which consist of one refractorycarbide, embebided in to a tough matrix of Co. These alloys extensively are used in applicationsthat demand abrasion resistance and high hardness. The present work has as objective to analyze thesintering of ultrafine powders of tungsten carbide (WC) with the addition of 10%wtCo. The alloyshad been prepared by using high pressure and high temperature technique. The sintering of theWC/10%pCo alloy was processed at the 3, 4 and 5 GPa, in temperatures of 1300,1400 and 1500ºC,during 2 and 4 minutes. The analysis was made by microstructure, densification, structure, Vickershardness and fracture toughness. The best results was density = 98.9%, hardness HV30 =10,77GPaand fracture toughness KIC = 15,57 MPa.m1/2
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/19/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.591-593.308.pdf
