Effects of Nano-SiO2 in Electrolytes on Surface Properties of Micro-Arc Oxidation Ceramic Coatings Formed on New Casting Aluminum Alloy

Abstract:

Article Preview

Ceramic coatings were fabricated on a new casting aluminum alloy during micro-arc oxidation by mixing nano-SiO2 into the phosphate electrolyte. The effects of nano-SiO2 in electrolyte on thickness, hardness and microstructure of the ceramic coatings were analyzed. The results show that nano-SiO2 is deposited on the surface layer of the ceramic coatings in micro-arc oxidation process. The compactness of the coatings is thus improved. Both the thickness and hardness of the ceramic coatings increase a lot. The optimal addition amount of nano-SiO2 in the electrolyte is 3g/L

Info:

Periodical:

Advanced Materials Research (Volumes 581-582)

Edited by:

Jimmy (C.M.) Kao, Wen-Pei Sung and Ran Chen

Pages:

368-372

Citation:

X. S. Zhou et al., "Effects of Nano-SiO2 in Electrolytes on Surface Properties of Micro-Arc Oxidation Ceramic Coatings Formed on New Casting Aluminum Alloy", Advanced Materials Research, Vols. 581-582, pp. 368-372, 2012

Online since:

October 2012

Export:

Price:

$38.00

[1] Bailing Jiang, Lijing Bai, Yongfeng Jiang. Growth of alumina ceramic coatings on the surface of aluminum alloy [J]. The Chinese Journal of Nonferrous Metals, 2001, 11(2): 186−189.

[2] Shigang Xin, Lixin Song, Ronggen Zhao, et al. Properties of aluminum oxide coating on aluminum alloy produced by micro-arc oxidation[J]. Surface and Coatings Technology, 2005, 199: 184−188.

DOI: https://doi.org/10.1016/j.surfcoat.2004.11.044

[3] Jun Ding, LIANG J, Litian Hu, et al. Effects of sodium tungstate on characteristics of micro-arc oxidation coatings formed on magnesium alloy in silicate-KOH electrolyte[J]. Transactions of Nonferrous Metals Society of China, 2007, 17(2): 244−249.

DOI: https://doi.org/10.1016/s1003-6326(07)60079-x

[4] XUE W B, SHI X L, HUA M, LI Y L. Preparation of anti-corrosion films by micro-arc oxidation on an Al-Si alloy [J]. Applied Surface Science, 2007, 253: 6118−6124.

DOI: https://doi.org/10.1016/j.apsusc.2007.01.018

[5] Writz G P, Bown S D, Kriven W M. Ceramic coatings by anodic spark deposition [J]. Materials and Manufacturing Processes, 1991, 6 (1): 87-115.

DOI: https://doi.org/10.1080/10426919108934737

[6] Timoshenko A V, Opara B K. Formation of protective wear resistant oxide coatings on aluminum alloys by the micro-plasma methods from aqueous electrolyte solutions [C]. Proc International Corrosion Congress, 1993, 1 (12) : 280-293.

[7] Krishniyer A, Ramasubramanian M, Popov B N, et al. Electro deposition & characterizations zinc-nickel-phosphorus alloys [J]. Plating & Surface Finishing, 1999, 86 (1): 99-103.

[8] Wenbin Xue, Ming Hua, Xiuling Shi, et al. Growth kinetics of micro-arc oxidation films on cast aluminum alloy and their corrosion resistance[J]. J Chin Ceram Soc, 2007, 35(6): 731−735.

[9] Wei Yang, Bailing Jiang, Weidian Shen, et al. Unhomogeneity of Micro-morphology and Mechanical Properties of Oxidation Coatings on Aluminum Alloy [J]. Journal of Materials Science & Engineering, 2009, 27(6): 888-891.

[10] Wei Yang, Bailing Jiang, Linyun Xian, et al. Action mechanism of solutions on forming process of micro-arc oxidation coatings on aluminum alloy [J]. The Chinese Journal of Nonferrous Metals, 2009, 19(3): 464-468.