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研究搅拌铸造工艺制备的硼酸镁晶须增强6061铝基复合材料在干滑动条件下的摩擦磨损性能。复合材料的体积分数为2%,根据增强体种类,材料分别记为:Al基体、Mg2B2O5w/6061Al、ZnO/Mg2B2O5w/6061Al和CuO/Mg2B2O5w/6061Al;讨论磨损速率和摩擦因数之间的关系。结果表明:在4种材料中,ZnO/Mg2B2O5w/6061Al复合材料的磨损率最低。随着载荷和滑动速度的增大,基体和复合材料的摩擦因数和磨损率降低,摩擦磨损机制由轻微磨损机制转向严重磨损机制。
The magnesium borate whisker prepared by stirring casting process was studied to improve the friction and wear properties of 6061 aluminum matrix composite under dry sliding conditions. The volume fraction of the composites is 2%. According to the types of reinforcements, the materials are respectively denoted as Al matrix, Mg2B2O5w / 6061Al, ZnO / Mg2B2O5w / 6061Al and CuO / Mg2B2O5w / 6061Al. The relationship between wear rate and friction coefficient is discussed. The results show that among the four materials, the wear rate of ZnO / Mg2B2O5w / 6061Al composites is the lowest. With the increase of load and sliding speed, the friction coefficient and wear rate of matrix and composite materials decrease, and the mechanism of friction and wear changes from slight wear mechanism to severe wear mechanism.