| 摘要 |
PURPOSE:To improve the wear resistance and toughness of a sintered hard WC-Co alloy without deteriorating the mechanical strength by incorporating a very small amount of Mo2C into the alloy. CONSTITUTION:A sintered hard alloy is composed of 87-95wt% WC-base hard phase and 5-13wt% Co-base binding phase, and Mo2C is incorporated into the alloy in 2/100-15/100 molar ratio of Mo2C/(Co+Mo2C). TaC and/or NbC may be substituted for 0.1-5wt% of WC in the hard phase so as to inhibit effectively the growth of grains.
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