论文部分内容阅读
研究了用热压法制造的碳纤维增强铜—5％锡基复合材料的摩擦磨损行为。对碳纤维的体积分数改变时,复合材料的摩擦系数,磨损速率的变化规律作了分析,进行了磨屑成分分析及磨面的形貌观察,初步提出了这种复合材料的磨损机制。实验结果表明:随着碳纤维含量的增加,复合材料的摩擦系数下降、磨损率减小,认为在给定的实验条件下,“碳纤维/铜—5％锡”复合材料的磨损是粘着和氧化共同作用的结果,在高温下或纤维体积含量较高时,氧化磨损是主要磨损形式。
The friction and wear behavior of carbon fiber reinforced copper-5% tin matrix composites fabricated by hot pressing were investigated. The changes of the friction coefficient and the wear rate of the composites were analyzed when the volume fraction of carbon fiber was changed. The wear debris composition analysis and surface morphology observation were carried out. The wear mechanism of the composites was proposed. The experimental results show that with the increase of the carbon fiber content, the friction coefficient of the composite decreases and the wear rate decreases. It is considered that the wear of the “carbon fiber / copper-5% tin” composite is coherent and oxidized under the given experimental conditions As a result, oxidative wear is the major form of wear at high temperatures or at high fiber volume contents.