活塞用硅-铝合金瓷质阳极氧化的研究

使用瓷质阳极氧化工艺在活塞用ZL101A硅-铝合金基材表面制备了阳极氧化膜,并对阳极氧化膜的厚度、表面粗糙度、硬度、成分、表面形貌及耐磨性进行了研究。结果表明:硅-铝合金阳极氧化膜的厚度和表面粗糙度分别为9.7μm和1.74μm。阳极氧化膜主要由铝、氧和钬元素构成,硬度约为3000 MPa。硅-铝合金阳极氧化膜呈灰白色,主要归因于阳极氧化膜表面的孔洞和树枝状结构。经过瓷质阳极氧化处理后,阳极氧化膜的摩擦因数仅为0.45,有利于提高耐磨性。

Study on Ceramic Anode Oxidation of Silicon-Aluminum Alloy for Piston

Anode oxidation film was prepared on the surface of ZL101A silicon-aluminum alloy for piston by ceramic anode oxidation technology,and the thickness,surface roughness,hardness,composition,surface morphology and wear resistance of anode oxidation film were studied.The results showed that the thickness and surface roughness of anode oxidation film on silicon-aluminum alloy were 9.7μm and 1.74μm,respectively.The anode oxidation film was mainly composed of aluminum,oxygen and titanium,and the hardness was about 3000 MPa.The ceramic anode oxidation film on silicon-aluminum alloy was grayish white,which was mainly attributed to the holes and dendritic structure on the surface of anode oxidation film.After ceramic anode oxidation treatment,the friction coefficient of anode oxidation film was only 0.45,which was conducive to improving the wear resistance.