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首页> 外文期刊>Journal of Materials Engineering and Performance >Effect of Rhenium Addition on Wear Behavior of Cr-Al2O3 Metal Matrix Composites
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Effect of Rhenium Addition on Wear Behavior of Cr-Al2O3 Metal Matrix Composites

机译：hen对Cr-Al2O3金属基复合材料磨损行为的影响

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摘要

Materials for applications in the automotive industry are required to be strong, stiff, hard, light weight, and wear resistant, which is very difficult to achieve in the case of conventional materials. To meet all these diverse requirements, it is necessary to combine various types of materials (such as metals and ceramics). In the present study, the chromium and chromium-rhenium matrices were reinforced with aluminum oxide to obtain composite materials with improved wear resistance. The composites were fabricated by a powder metallurgy method. The effects of the rhenium addition and volume fraction of aluminum oxide on the wear rate and the friction coefficient of the composites at room temperature were examined in a ball-on-surface apparatus under dry conditions. The worn surfaces and debris were studied by scanning electron microscopy. The final values of the friction coefficient were 0.9 and 0.8 for the Cr-25% Al2O3 and Cr-40%Al2O3 composites, respectively. Alloying Cr matrix with Re improved wear resistance of composite but, at the same time, it caused an increase in its coefficient of friction.
机译：用于汽车工业的材料要求坚固，坚硬，坚硬，重量轻和耐磨，这在常规材料的情况下很难实现。为了满足所有这些不同的要求，有必要组合各种类型的材料（例如金属和陶瓷）。在本研究中，用氧化铝增强铬和铬-基体以获得具有改善的耐磨性的复合材料。该复合材料是通过粉末冶金方法制造的。在干燥条件下，在表面上的球形装置中检查了addition的添加量和氧化铝的体积分数对复合材料在室温下的磨损率和摩擦系数的影响。通过扫描电子显微镜研究磨损的表面和碎屑。 Cr-25％Al2O3和Cr-40％Al2O3复合材料的最终摩擦系数分别为0.9和0.8。将Cr基体与Re合金化可提高复合材料的耐磨性，但同时会导致其摩擦系数增加。

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