【摘要】 采用双层辉光离子渗氮技术对5A12铝合金表面进行渗氮,并对渗氮层的耐磨性进行了研究。结果表明,等离子渗氮后,5A12铝合金渗氮层厚度为32μm,表面显微硬度为425 HV0.2,比基体提高了1.39倍,摩擦因数由0.65降到0.4左右,耐磨性大幅度提高。更多还原

【Abstract】 Double glow plasma nitriding technique was used to nitride the surface of 5A12 aluminum alloy and the wear resistance of the nitrided layer was studied. The results show that after plasma nitriding,the nitrided layer thickness of 5A12 aluminum alloy is 32 μm,the surface microhardness is 425 HV0. 2 which is 1. 39 times higher than that of the substrate,the friction coefficient of the surface is reduced from 0. 65 to 0. 4,the wear resistance increases significantly.更多还原