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Vol.46, No.4, 223 ~ 227, 2008
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| Title |
| Mechanical Properties and Consolidation of Ultra-Fine WC-10Co and WC-10Fe Hard Materials by Rapid Sintering Process |
| 정인균 In Kyoon Jeong , 박정환 Jung Hwan Park , 도정만 Jung Mann Doh , 김기열 Ki Youl Kim , 우기도 Kee Do Woo , 고인용 In Young Ko , 손인진 In Jin Shon |
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| Abstract |
| The comparison of sintering behavior and mechanical properties of ultra-fine WC-10wt.%Co and WC-10wt.%Fe hard materials produced by high-frequency induction heated sintering (HFIHS) was accomplished using ultra fine powder of WC and binders(Co, Fe). The advantage of this process allows very quick densification to near theoretical density and prohibition of grain growth in nano-structured materials. Highly dense WC-10Co and WC-10Fe with a relative density of up to 99% could be obtained with simultaneous application of 60 MPa pressure and induced current within 1 minute without significant change in grain size. The hardness and fracture toughness of the dense WC-10Co and WC-10Fe composites produced by HFIHS were investigated. |
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| Key Words |
| rapid sintering, high-frequency induction heated sintering, wc-fe, wc-co, hard materials, hardness, fracture toughness |
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