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采用真空热压法制备铜基功能梯度材料,测量了梯度材料的硬度、电导率和密度。用MMU-5GA微机控制真空高温摩擦磨损试样机测试材料的摩擦磨损性能,并利用扫描电镜和XRD衍射仪等手段对功能梯度材料微观组织及磨痕形貌观察分析。结果表明,真空热压可以获得组织均匀致密的功能梯度材料,其基体连续整体分布,界面结合良好,存在扩散现象,并且球磨40h比球磨20h的试样具有更好的物理性能和摩擦磨损性能。
The Cu-based functional graded material was prepared by vacuum hot pressing, and the hardness, conductivity and density of the graded material were measured. The friction and wear properties of the material were tested by using MMU-5GA computer controlled vacuum high-temperature friction and wear testing machine. The microstructure and wear scar morphology of functional graded material were observed and analyzed by means of SEM and XRD. The results show that vacuum hot pressing can obtain uniform and compact functional graded material. The matrix is continuously and monolithically distributed, with good interfacial adhesion and diffusion. The results show that the 40h ball has better physical properties and friction and wear properties than the ball milled for 20h.