한국분말야금학회지 Vol. 26 No. 2 (p.132-137)

소결조제 변화에 따른 텅스텐카바이드 소결체 특성평가

Property Evaluation of Tungsten-Carbide Hard Materials as a Function of Binder
키워드 :
WC-Co,WC-Fe,WC-Ni,Spark plasma sintering process,Mechanical properties

목차

Abstract
1. 서 론
2. 실험방법
3. 실험결과 및 고찰
4. 결 론
References

초록

Tungsten carbide (WC) hard materials are used in various industries and possess a superior hardness compared to other hard materials. They have particularly high melting points, high strength, and abrasion resistance. Accordingly, tungsten carbide hard materials are used for wear-resistant tools, cutting tools, machining tools, and other tooling materials. In this study, the WC-5wt.%Co, Fe, Ni hard materials are densified using the horizontal ball milled WC-Co, WC-Fe, and WC-Ni powders by a spark plasma sintering process. The WC-5Co, WC-5Fe, and WC-5Ni hard materials are almost completely densified with a relative density of up to 99.6% after simultaneous application of a pressure of 60 MPa and an electric current for about 15 min without any significant change in the grain size. The average grain size of WC-5Co, WC-5Fe, and WC-5Ni that was produced through SPS was about 0.421, 0.779, and 0.429 μm, respectively. The hardness and fracture toughness of the dense WC-5Co, WC-5Fe, WC-5Ni hard materials were also investigated.