Effect of Nano-SiO2Additive on the Microstructure and Wear Resistance of Micro-arc Oxidation Ceramic Coating on Casting Aluminum Alloy

WU De-feng; LEI Yuan-yuan; ZHANG Xiao-yan; ZHOU Xiao-song

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Surface Technology ›› 2013, Vol. 42 ›› Issue (5) : 42-44.

Effect of Nano-SiO₂Additive on the Microstructure and Wear Resistance of Micro-arc Oxidation Ceramic Coating on Casting Aluminum Alloy

WU De-feng¹, ZHOU Xiao-song¹, LEI Yuan-yuan², ZHANG Xiao-yan²

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Abstract

The effects of nano-SiO₂additive in electrolyte on ceramic coatings formed by micro-arc oxidation process on casting aluminum-copper alloy on thickness, hardness,phase structure micromorphology and wear resistance were analyzed. The results show that nano-SiO₂additive take part in the process of micro-arc oxidation. The optimal addition amount of nano-SiO₂in the electrolyte is 3 g / L.

Key words

nano-SiO₂; casting aluminum-copper alloy; micro-arc oxidation; wear resistance

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WU De-feng, LEI Yuan-yuan, ZHANG Xiao-yan, ZHOU Xiao-song. Effect of Nano-SiO₂Additive on the Microstructure and Wear Resistance of Micro-arc Oxidation Ceramic Coating on Casting Aluminum Alloy[J]. Surface Technology. 2013, 42(5): 42-44