Mechanical properties and rapid consolidation of nanostructured WC and WC–Al2O3 composites by high-frequency induction-heated sintering |
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| Affiliation: | 1. Division of Advanced Materials Engineering and the Research Center of Advanced Materials Development, Engineering College, Chonbuk National University, Chonbuk 561-756, Republic of Korea;2. Minerals Resources Research Division, Korea Institute of Geoscience and Mineral Resources, Daejeon 305-350, Republic of Korea;1. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China;2. Advanced Corporation for Materials & Equipments, Changsha 410118, China;3. Engineering Research Center of High-efficiency Development and Application Technology of Tungsten Resources, Ministry of Education, Ganzhou 341000, China |
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| Abstract: | The short-term rapid sintering of nanostructured WC and WC–Al2O3 hard materials was fabricated using the high-frequency induction-heating sintering (HFIHS) process. The sintering behaviors, microstructure, and mechanical properties of the WC and WC–Al2O3 composites were investigated. The addition of Al2O3 to WC can facilitate sintering, and the grain size of WC decreases as the addition of Al2O3 is increased; furthermore, the hardness and fracture toughness of WC-15 vol% Al2O3 are greater than those of monolithic WC and Al2O3. |
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