| Title |
Research Paper - Mechanical Behavior - : A Study on Fabrication of WC - 0.8SiC - 10Ni Cemented Carbide and its Properties |
| Authors |
박원구(W . K . Park); 황선근(S . K . Hwang); 이억섭(O . S . Lee); 김영도(Y . D . Kim) |
| Abstract |
Effects of the amounts of SiC coating on the properties of WC-SiC-Ni cemented carbide were investigated. A highly condensed sintered material with a theoretical density higher than 98% was obtained for SiC with 0.8w/o when W powders coated with SiO2 were carburized at 1450℃ and SiC coated WC was sintered with Ni. The particle size of W C powders in this sintered material was about 0.9 ㎛ and very uniform. The Vickers hardness was measured to be as high as 1760 ㎏/㎟. Transeverse Rupture Strength (TRS) to be 338 ㎏/㎟. These good properties of the cemented carbide were able to be obtained by forming a condensed SiC layer for SiC of 0.8w/o which enhanced the interface reaction of the carbide with Ni and thus by inhibiting WC particle growth, making the particle size uniform, and making the sintered material condensed. |