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Journal of Inorganic Materials

Journal of Inorganic Materials >

2007 , Vol. 22 >Issue 3: 555 - 559

DOI: https://doi.org/10.3724/SP.J.1077.2007.00555

Research Paper

nfluence of Treatment Time on Structure and Property of Ceramic Coatings Formed on LY12 Aluminum Alloy by Micro-arc Oxidation

  • WU Zhen-Dong ,
  • JIANG Zhao-Hua ,
  • YAO Zhong-Ping ,
  • ZHANG Xue-Lin
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  • 1. Department of Applied Chemistry, Harbin Institute of Technology, Harbin 150001, China; 2. Normal Institute of Baicheng, Baicheng 137000, China

Received date: 2006-05-29

  Revised date: 2006-08-16

  Online published: 2007-05-20

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Abstract

In K2ZrF6 solution, the ceramic coatings composed of a large amount of t-ZrO2, m-ZrO2 and a little γ-Al2O3 and KZr2(PO4)3 were prepared on LY12 aluminum by a micro-arc oxidation technique. With the increase of micro-arc oxidatin (MAO) time, the content of crystalline substances is increased, the coating surface roughness is increased, and the compactness of the coating is improved. The thickness of the coating is increased approximately linearly, and the hardness and the corrosion resistance are both improved, while the heat shock resistance of the coatings turned worse. Meantime, the friction tests
show that the anti-abrasion of the coated samples is improved to a large extent, the friction coefficient of the substrate is about 2/3 that of the coated samples. With the increase of MAO time, friction weight loss of the coated samples is first increased, and then decreased, while the friction coefficient is decreased.

Key words： LY12 aluminum alloy; micro-arc oxidation; ceramic coating; zirconia

Cite this article

WU Zhen-Dong , JIANG Zhao-Hua , YAO Zhong-Ping , ZHANG Xue-Lin . nfluence of Treatment Time on Structure and Property of Ceramic Coatings Formed on LY12 Aluminum Alloy by Micro-arc Oxidation

[J]. Journal of Inorganic Materials, 2007 , 22(3) : 555 -559 . DOI: 10.3724/SP.J.1077.2007.00555

References

[1] Yerohin A L, Nie X, Leyland A, et al. Surf. Coat. Technol., 1999, 122: 73--93.
[2] Sundararajan G, Rama Krishna L. Surf. Coat. Technol., 2003, 167: 269--277. [3] Xue W, Deng Z, Lai Y, et al. J Am Ceram Soc, 1998, 81 (5): 1365--1368.
[4] 辛世刚, 宋力昕, 赵荣根, 等(XIN Shi-Gang, et al). 无机材料学报(Journal of Inorganic Materials), 2006, 21 (2): 493--498.
[5] Nie X, Leyland A, Song H W, et al. Surf Coat Technol, 1999, 116-119: 1055--1060.
[6] Г.Л.Щукин, А.Л.Баланович, В.П.Савенко. Журнал Прикладной Химии. 1996, 69 (6): 939-941.
[7] 周慧, 李争显, 杜继红, 等. 稀有金属材料与工程, 2005, 34 (8): 1330-1333.
[8] 梁波, 陈煌. 硅酸盐通报. 2003, (6): 63-68.
[9] Gnedenkov S V, Khrisanfova O A, Zavidnaya A G. Surf Coat Technol, 2001, 145: 146-151.
[10] 崔世海, 韩建民, 李卫京, 等. 航空材料学报, 2006, 26 (2): 20-22.
[11] Yerokhin A L, Nie X, Leyland A, et al. Surf. Coat. Technol., 2000, 130 (2-3): 195-206.
[12] 孙学通, 姜兆华, 李延平, 等(SUN Xue-Tong, et al). 无机材料学报(Journal of Inorganic Materials), 2004, 19 (4): 881-886.
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