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用X射线光电子能谱 (XPS)和小掠射角X射线衍射 (GAXRD)研究了铝合金LY12等离子体基离子注入形成AlN/TiN改性层的成分分布及相结构 .在此基础上测量了改性层的纳米硬度 ,并进行了摩擦磨损试验 .结果表明 ,氮和钛都能有效地注入到铝合金里 ,后注入的元素对先注元素的含量和分布有重要影响 .钛、氮同时注入在试样表面形成一层稳定的钛、氮化合层 .和未改性试样相比 ,所形成的AlN/TiN改性层纳米硬度及承载能力都提高 5倍以上 .在低滑动载荷下 ,摩擦系数减小 70 %以上 ,耐磨性提高近 10倍 ,耐磨寿命提高了近 6倍 ,粘着磨损程度显著减轻 .随着载荷的增加 ,相应的耐磨性能有所降低 .适当的改性层结构及其中分布的TiO2 、TiN、TiAl3、Al2 O3、AlN等相是性能改善的主要原因
The composition distribution and phase structure of AlN / TiN modified layer were investigated by X-ray photoelectron spectroscopy (XPS) and small glancing angle X-ray diffraction (GAXRD) The results show that both nitrogen and titanium can be effectively injected into the aluminum alloy, and the injected elements have an important influence on the content and distribution of the first-in-note elements. The formation of a stable layer of titanium and nitrogen compound on the surface of the sample was achieved by injecting the AlN / TiN modified layer with more than 5 times higher hardness and loading capacity than that of the unmodified sample.Under the condition of low sliding load , The friction coefficient is reduced by more than 70%, the abrasion resistance is increased by nearly 10 times, the wear life is increased by nearly 6 times, and the degree of adhesive wear is remarkably reduced.With the increase of load, the corresponding wear resistance is reduced. The main reason for the improvement of the properties is the layer structure and the phases of TiO2, TiN, TiAl3, Al2 O3 and AlN