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以石墨、碳化硼颗粒为复合增强体、ZA27为基体,制备出锌基复合材料,并研究了它的常规力学性能及摩擦学特性。通过对粒子进行预处理、球磨、机械搅拌等技术,将粒子与熔融状态的锌铝合金复合并搅拌成均匀的浆料,用挤压铸造法挤压成型,得到粒子增强的锌基复合材料。在金属基体上均匀分布着石墨、碳化硼颗粒。锌基复合材料比基体进入稳定磨损阶段的时间缩短,滑动过程平稳性增大。在润滑条件下,复合材料的耐磨性比ZA27合金有较大幅度提高,减摩性有所提高。
Graphite, boron carbide particles as a composite reinforcement, ZA 27 as the matrix, prepared a zinc matrix composites, and studied its conventional mechanical properties and tribological properties. By particle pretreatment, ball milling, mechanical stirring and other technologies, the particles and the molten zinc alloy and stir into a uniform slurry, squeeze casting extrusion molding, particle reinforced zinc-based composite material. Graphite and boron carbide particles are uniformly distributed on the metal substrate. Zinc matrix composites than the matrix into the stage of stable wear and tear shorten the time, the stability of the sliding process increases. Under lubrication conditions, the wear resistance of composite materials than the ZA 27 alloy has a substantial increase in friction reduction increased.