WC颗粒增强钢基复合材料的制备及耐磨性研究

以0.076～0.1mmWC颗粒为增强相,45钢为基体,采用粉末冶金真空烧结法制备颗粒增强钢基表面复合材料,考察了常温压制烧结和温压烧结2种工艺条件下的摩擦磨损性能。结果表明,对于质量配比1∶1的WC和45钢粉末,采用硬脂酸锌作润滑剂,压制温度140℃,压制压力320kN,得到较为理想的复合材料,其耐磨性是Cr15的2.8倍,是同样工艺条件下常温压制试样的2.9倍。

Preparation and Wear Resistance Research on 45 Steel Matrix Composite Reinforced by WC Particles

In this paper, powder metallurgy solid phase sintering was used for 45 steel matrix composites reinforced by WC particles （0. 076-0.1 mm in size）. The performances of sliding friction wear of the composites that prepared by the suppression sintering at room temperature and warm compaction sintering were tested. The test results show that the composites with better properties can be obtained when the composite containing 50% WC and 50% 45 steel and the compaction temperature is 140℃, the stress is 320 kN, with the zinc stearate as lubricant. The wear resistance of this new sample is 2. 8 times of Cr15 cast iron, and is 2. 9 times of that of the sample prepared by room temperature compaction.