Journal of Surface Science and Engineering (한국표면공학회지)

The Korean Institute of Surface Engineering (한국표면공학회)
권호 표지
DOI QR코드

DOI QR Code

Effect of Na2SiO3 concentration on PEO film formation of Al6061 alloy

Al6061 합금의 PEO 피막 형성에 미치는 Na2SiO3 농도의 영향

  • 이병건 ((주)영광와이케이엠씨 연구개발센터) ;
  • 한영욱 ((주)영광와이케이엠씨 연구개발센터) ;
  • 장기범 ((주)영광와이케이엠씨) ;
  • 조성열 ((주)영광와이케이엠씨 연구개발센터)
  • Received : 2024.04.16
  • Accepted : 2024.04.25
  • Published : 2024.04.30
Download PDF
⟨ Previous Next ⟩

Abstract

In this study, we investigated the effect of Na2SiO3 concentration on the Plasma Electrolytic Oxidation(PEO) film formation of Al6061 alloy. The morphology of the PEO films were examined by Optical Microscope(OM) and Scanning Electron Microscope(SEM). PEO film thickness increases as the Na2SiO3 concentration increases. The elemental analysis of PEO films was conducted using Dispersive X-ray Spectrometer(EDS). The cross-sectional elemental analysis result shows that the Si concentration tends to increase as the concentration of Na2SiO3 increases. X-Ray Diffraction(XRD) analysis was performed to confirm the degree of phase change according to Na2SiO3 concentration. In addition, Vickers hardness was measured to confirm the mechanical strength of the PEO film. As the concentration of Na2SiO3 increases, the hardness value also tends to increase.

Keywords

References

  1. L. Famiyeh, X. Huang, Plasma electrolytic oxidation coatings on aluminum alloys: microstructures, properties, and applications. Modern Concepts in Material Science, 2 (2019) 000526. 
  2. S. Moon, C. Yang, S. Na, Effects of hydroxide and silicate ions on the plasma electrolytic oxidation of AZ31 Mg alloy, Journal of the Korean Institute of Surface Engineering, 47 (2014) 147-154.  https://doi.org/10.5695/JKISE.2014.47.4.147
  3. S. Sikdar, P.V. Menezes, R. Maccione, T. Jacob, P.L. Menezes, Plasma electrolytic oxidation (PEO) process-processing, properties, and applications. Nanomaterials 2021, 11 (2021) 1375. 
  4. S. Stojadinovic, R. Vasilic, I. Belca, M. Petkovic, B. Kasalica, Z. Nedic, L. Zekovic, Characterization of the plasma electrolytic oxidation of aluminium in sodium tungstate, Corrosion Science, 52 (2010) 3258-3265.  https://doi.org/10.1016/j.corsci.2010.05.042
  5. J. Liu, Z. Xianyong, H. Zhiqiu, Y. Sirong, X. Yang, Characterization and property of microarc oxidation coatings on open-cell aluminum foams, Journal of Coatings Technology and Research, 9(3) (2012) 357-363.  https://doi.org/10.1007/s11998-011-9377-3
  6. D. Vahid, X.Y. Liu, B.L. Luan, D.W. Shoesmith, S. Rohani, Phase transformation in plasma electrolytic oxidation coatings on 6061 aluminum alloy, Surface and Coatings Technology, 251 (2014) 106-114.  https://doi.org/10.1016/j.surfcoat.2014.04.010
  7. K. Wang, B.H. Koo, C.G. Lee, Y.J. Kim, S.H. Lee, E. Byon, Effects of electrolytes variation on formation of oxide layers of 6061 Al alloys by plasma electrolytic oxidation, Transactions of Nonferrous Metals Society of China, 19 (2009) 866-870.  https://doi.org/10.1016/S1003-6326(08)60366-0
  8. W. Liu, C. Blawert, M. Zheludkevich, C. Fan, M. Talha, Y. Lin, Microstructure, wear and corrosion performance of plasma electrolytic oxidation coatings formed on D16T Al alloy, Rare Metals, 39 (2020) 1425-1439.  https://doi.org/10.1007/s12598-020-01523-0
  9. H. Xie, Y. Cheng, S. Li, J. Cao, L. Cao, Wear and corrosion resistant coatings on surface of cast A356 aluminum alloy by plasma electrolytic oxidation in moderately concentrated aluminate electrolytes, Transactions of Nonferrous Metals Society of China, 27 (2017) 336-351.  https://doi.org/10.1016/S1003-6326(17)60038-4
  10. Z.Y. Ding, Y.H. Wang, J.H. Ouyang, Insights into structure and high-temperature oxidation behavior of plasma electrolytic oxidation ceramic coatings formed in NaAlO2-Na2CrO4 electrolyte, Journal of Materials Science, 53 (2018) 9978-9987.  https://doi.org/10.1007/s10853-018-2307-3
  11. A. Sharma, Y. Jang, J.P. Jung, Effect of KOH to Na2SiO3 ratio on microstructure and hardness of plasma electrolytic oxidation coatings on AA 6061 alloy, Journal of Materials Engineering and Performance, 26 (2017) 5032-5042.  https://doi.org/10.1007/s11665-017-2916-z
  12. D. Vahid, Surface modification of aluminum alloys by plasma electrolytic oxidation. Ph.D. Thesis, The University of Western Ontario, Canada, (2014) 
  13. N. Barati, A. Yerokhin, F. Golestanifard, S.Rastegari, E.I. Meletis, Alumina-zirconia coatings produced by plasma electrolytic oxidation on Al alloy for corrosion resistance improvement, Journal of Alloys and Compounds, 724 (2017) 435-442.  https://doi.org/10.1016/j.jallcom.2017.07.058
  14. M.S. Joni, A.F. alhosseini, Effect of KOH concentration on the electrochemical behavior of coatings formed by pulsed DC microarc oxidation (MAO) on AZ31B Mg alloy, Journal of Alloys and Compounds, 661 (2016) 237-244.  https://doi.org/10.1016/j.jallcom.2015.11.169
  15. J. Kim, H. Shin, S. Moon, Effect of Na3PO4 concentration on the formation behavior and properties of PEO films on AA2024, Journal of the Korean institute of surface engineering, 53 (2020) 351-359. https://doi.org/10.5695/JKISE.2020.53.6.351