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Effect Of Borates And Silicates On Wearing Properties Of Mao Coatings

Author

Listed:
  • Yu ZHANG

    (Key Laboratory of E&M, Ministry of Education and Zhejiang Province, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China†School of Mechanical Engineering, Zhejiang Industry Polytechnic College, Shaoxing, Zhejiang 312000, P. R. China)

  • YAN-WEI ZHAO

    (Key Laboratory of E&M, Ministry of Education and Zhejiang Province, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China)

  • NAN XIANG

    (#x2021;School of Materials Science and Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China)

  • REN-GUO SONG

    (#x2021;School of Materials Science and Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China)

Abstract

In the present study, microarc oxidation (MAO) coatings were formed on ZL101A aluminum alloy in an electrolytic bath containing 3g/L KOH + 2g/L Na2WO4+ 4g/L KF. The morphology and wearing behavior were investigated. In both electrolytes, the additives were borates (Na2B4O718g/L) and silicates (Na2SiO3 18g/L), respectively. It was found that the coating formed in borates-containing electrolyte was of compact and smooth structure than that of the one formed in silicates-containing electrolyte at the optimum treatment time. It was found that all the coatings were composed of á-Al2O3 and ã-Al2O3. The microhardness and wear tests proved that the coating formed in borates-containing electrolyte was having better mechanical properties than those of the coating formed in silicates-containing electrolyte.

Suggested Citation

  • Yu ZHANG & YAN-WEI ZHAO & NAN XIANG & REN-GUO SONG, 2017. "Effect Of Borates And Silicates On Wearing Properties Of Mao Coatings," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 24(05), pages 1-10, July.
    • Handle: RePEc:wsi:srlxxx:v:24:y:2017:i:05:n:s0218625x17500615
    DOI: 10.1142/S0218625X17500615
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