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| Investigation on Spark Plasma Sintering Process of Ultra-Fine Grained WC–10%Co Cemented Carbide Three-Edged Tool |
| WANG Guofeng, LIU Qing, SHI Wenzhan, LI Danfeng |
| ( School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China ) |
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Abstract The effect of sintering temperature and holding time on the microstructures and mechanical properties of WC–10%Co cemented carbide during spark plasma sintering process was investigated. The results indicated that the densities and hardness were enhanced with the increase of sintering temperature from 1200℃ to 1350℃. The densities and hardness enhanced first and then decreased with the increase of holding time from 3min to 9min at 1350℃. The density of cemented carbide arrived maximum value of 99.3%, as well as the hardness of 2212HV at the sintering parameters of 1350℃ and 6min. The three-edged tool with high quality was sintered at the optimum parameters. The density and harness of the tool were 99.2% and 2232HV, respectively.
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2020, 
