添加玄武岩纤维对Al-Cu-Mg基复合材料耐磨性的影响

Effect of Basalt Fiber on the Wear-resistance of Aluminium-Copper-Magnesium-based Composites

为提高Al-Cu-Mg合金的耐磨性,对玄武岩纤维(简称BF)进行表面镀铜处理,利用粉末冶金法制备了不同BF含量的Al-Cu-Mg基复合材料,对复合材料的耐磨性进行研究。结果表明:利用化学镀方法在BF表面镀上了厚度均匀的铜膜;随着BF含量的增加,复合材料中Si O2和Al2Cu的含量增加;硬度随BF含量的增加先增加后减小,含量为5%时硬度最大,与未添加BF样品的硬度相比,硬度提高了12.9%;磨损率随BF含量的增加先减小后增加,BF含量为5%时磨损率最小,磨损率为未添加BF样品的42%;BF含量低时,磨损以磨粒磨损为主,BF含量高时,磨损以剥离磨损为主。

In order to research the effect of basalt fiber（BF） on the wear-resistance of aluminium-copper-magnesium-based composites, BF was pretreated with copper plating, and the wear-resistance of aluminium-copper-magnesium-based composites reinforced by BF, which were synthesized by powder metallurgy, was studied in this paper. The results show that：（1） A homogeneous copper film is plated on the surface of BF by using chemical plating method;（2） The hardness increase and then decrease with content increase of BF; the sample with 5% BF has the maximum hardness, which increases by 12.9% in contrast with sample without BF;（3） The wear rate decreases and then increases with content increase of BF; the sample with 5% BF has the minimum wear rate, which is 42% of sample without BF;（4） When BF level is low, the wear mechanism is mainly abrasive wear, however, when BF level is high, the wear mechanism is mainly strip wear.