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对 YL12铝合金进行了铁离子注入 ,用俄歇电子能谱 (AES)分析了注入层剖面元素分布 ,同时考察了注入层的表面显微硬度、脆性和在干摩擦条件下的摩擦磨损特性 .采用扫描电子显微镜 (SEM)对磨痕表面形貌进行了观察分析 .研究结果表明 :铁离子在注入层中沿剖面呈高斯分布 ;注入层表面显微硬度有所增加 ,摩擦系数显著降低 ;当注入剂量为 7× 10 1 6 Fe+ / cm2 时 ,注入试样的耐磨性为未注入试样的 3 80 0倍 ;随着铁离子注入剂量的增大试样的表面脆性增加 ,耐磨性降低 ;注入前材料的磨损机制以粘着磨损和磨粒磨损为主 ,注入后磨损机制则以氧化磨损为主
The ion implantation of YL12 aluminum alloy was carried out. The elemental distribution of the injection layer was analyzed by Auger electron spectroscopy (AES). The microhardness, brittleness and frictional wear properties of the injection layer were investigated. Scanning electron microscopy (SEM) was used to observe the surface morphology of the wear scar. The results show that the iron ions have a Gaussian distribution along the cross-section in the implanted layer. The microhardness of the implanted layer increases and the friction coefficient decreases significantly. When the implantation dose is 7 × 10 16 Fe + / cm2, the wear resistance of the sample is 3080 times that of the non-injected sample. As the dose of iron ion implantation increases, the surface brittleness of the sample increases and the wear resistance Decreased; the wear mechanism of the material before injection was mainly adhesive wear and abrasive wear, while the wear mechanism after injection was mainly oxidative wear