The effects of Ni content and maceration metal on the microstructures and mechanical properties of the WC based diamond composites were investigated in an attempt to seek optimal Ni addition concentration and alloy type. The results indicate that the Cu-10Ni-5Mn-29Zn alloy is more suitable to be used as the matrix maceration metal of WC matrix materials. The bending strength of matrix samples increased up to approximately 10% upon 5 wt% Ni addition. The WC based diamond composite with 5 wt% Ni exhibited an optimal overall performance. The strengthening mechanisms of bending strength and diamond retention capabilities were revealed. The good diamond-holding and WC-holding capabilities and the reinforcement of toughness and the plastic of this Cu-10Ni-5Mn-29Zn alloy are the primary reasons for the excellent performance of composites.

研究了Ni含量和浸渍金属对WC基金刚石复合材料的组织和力学性能的影响，以寻求最佳的Ni添加浓度和合金类型。结果表明，Cu-10Ni-5Mn-29Zn合金更适合用作WC基体材料的基体浸渍金属。添加5 wt％的镍后，基体样品的抗弯强度提高了约10％。具有5 wt％Ni的WC基金刚石复合材料表现出最佳的整体性能。揭示了弯曲强度和金刚石保持能力的增强机理。这种Cu-10Ni-5Mn-29Zn合金具有良好的金刚石保持力和WC保持能力，以及韧性和塑性的增强，是复合材料具有优异性能的主要原因。