발간논문

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Vol.34, No.8, 987 ~ 995, 1996
Title
Research Paper - Mechanical Behavior - : A Study on Fabrication of WC - 0.8SiC - 10Ni Cemented Carbide and its Properties
박원구W . K . Park, 황선근S . K . Hwang, 이억섭O . S . Lee, 김영도Y . 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.
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