| WC와 Co원료 입자크기 변화에 따른 WC-Co계 초경합금의 특성 변화 |
| 정태주, 안선용1, 백용균 |
안동대학교 신소재공학부
1한국야금(주) 생산기술연구소 |
| Effect of Variation in Particle Size of WC and Co Powder on the Properties of WC-Co Alloys |
| Tai-Joo Chung, Sun-Yong Ahn1, Yeong-Kyeun Paek |
School of Materials Science and Engineering, Andong National University
1Division of Research and Development, Korloy Inc. |
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| ABSTRACT |
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The effect of variation in particle size of WC and Co powder on the properties of WC-Co alloys was investigated. WC and Co powders having different particle sizes were used in the fabrication of $WC-10;wt%$Co composites. High hardness and low fracture toughness alloy was obtained with the decrease in WC particle size regardless of Co particle size. It was newly found in this investigation that the initial particle size of Co as well as WC had a great role in the microstructure and properties of WC-Co hard materials. The average grain size and fracture toughness of WC-Co alloys using same WC powder size increased and their hardness decreased with the use of relatively finer Co binder. |
| Key words:
Particle size, Grain size, Hardness, Fracture toughness |
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