Proceedings of the Materials Research Society of Korea Conference (한국재료학회:학술대회논문집)
- 2011.05a
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- Pages.58.1-58.1
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- 2011
Evaluation of Mechanical Properties and Microstructural Behavior of Sintered WC-7.5wt%Co and WC-12wt%Co Cemented Carbides
- Raihanuzzaman, Rumman Md. (Kongju National University Department of Advanced Materials Engineering) ;
- Song, Jun-U ;
- Tak, Byeong-Jin ;
- Hong, Hyeon-Seon ;
- Hong, Sun-Jik
- Published : 2011.05.27
Abstract
WC-Co and other similar cemented carbides have been widely used as hard materials in industrial cutting tools and as mould metals; and a number of techniques have been applied to improve its microstructural characteristics, hardness and ear resistance. Cobalt is used primarily to facilitate liquid phase sintering and acts as a matrix, i.e. a cementing phase between WC grains. A uniform distribution of metal phase in a ceramic is beneficial for improved mechanical properties of the composite. WC-Co, starting from initial powders, is vastly used for a variety of machining, cutting, drilling, and other applications because of its unique combination of high strength, high hardness, high toughness, and moderate modulus of elasticity, especially with fine grained WC and finely distributed cobalt. In this study, that started with two different compositions of initial powders, WC-7.5wt%Co and WC-12wt%Co with initial powder size being 1~3