DOI QR코드

DOI QR Code

Effect of PEO Process Conditions on Oxidized Surface Properties of Mg alloy, AZ31 and AZ91. I. Applied Voltage and Time

PEO 처리조건에 따른 마그네슘 합금 AZ31과 AZ91의 산화표면피막특성에 대한 연구. I. 전압과 시간의 영향

Ham, Jae-Ho;Jeon, Min-Seok;Kim, Yong-Nam;Shin, Min Chul;Kim, Kwang Youp;Kim, Bae-Yeon
함재호;전민석;김용남;신민철;김광엽;김배연

  • Received : 2016.03.10
  • Accepted : 2016.03.16
  • Published : 2016.04.01

Abstract

The surface of Mg alloy, AZ31 and AZ91, were treated by PEO (plasma electrolytic oxidation) in Na-P system electrolyte, with different applied voltage and time. Thickness, roughness and X-ray crystallographic analysis revealed several results. The more applied time and voltage of PEO treated, the thicker oxidized surface coating layer were covered. And surface roughness increased with the thickness of oxidized layer. It was thought that when oxide layer grew, resistivity and breakdown voltage increased with the thickness of layer, and then, the energy of micro plasma need to be higher then before. So, it made craters and pores of surface become greater, which were responsible for the coarse surface.

Keywords

PEO;Oxidization;Mg alloy;Crystal structure;Electric properties

References

  1. B. L. Mordike and T. Ebert, Materials Science and Engineering, A302, 37 (2001). [DOI: http://dx.doi.org/10.1016/S0921-5093(00)01351-4] https://doi.org/10.1016/S0921-5093(00)01351-4
  2. G. L. Song and A. Atrens, Advanced Engineering Materials, 1002, 1 (1999).
  3. H. F. Guo, and M. Z. An, Thin Solid Films, 500, 186 (2006). [DOI: http://dx.doi.org/10.1016/j.tsf.2005.11.045] https://doi.org/10.1016/j.tsf.2005.11.045
  4. Y. Ma, X. Nie, D. O. Northwood, and H. Hu, Thin Solid Films, 494, 296 (2006). [DOI: http://dx.doi.org/10.1016/j.tsf.2005.08.156] https://doi.org/10.1016/j.tsf.2005.08.156
  5. A. L. Yerokhin, X. Nie, A. Leyland, A. Matthews, and S. J. Dowey, Surface and Coating Technology, 122, 73 (1999). [DOI: http://dx.doi.org/10.1016/S0257-8972(99)00441-7] https://doi.org/10.1016/S0257-8972(99)00441-7
  6. H. F. Guo, and M. Z. An, Applied Surface Science., 246, 229 (2005). [DOI: http://dx.doi.org/10.1016/j.apsusc.2004.11.031] https://doi.org/10.1016/j.apsusc.2004.11.031
  7. H. F. Guo, M. Z. An, S. Xu, H. Huo, Thin Solid Films, 485, 53 (2006). [DOI: http://dx.doi.org/10.1016/j.tsf.2005.03.050] https://doi.org/10.1016/j.tsf.2005.03.050
  8. H. F. Guo and M. Z. An, Applied Surface Science, 246, 229 (2005). [DOI: http://dx.doi.org/10.1016/j.apsusc.2004.11.031] https://doi.org/10.1016/j.apsusc.2004.11.031
  9. R. Arrabal, E. Matykina, F. Viejo, P. Skeldon, and G. E Thompson, Corrosion Science, 50, 1744 (2008). [DOI: http://dx.doi.org/10.1016/j.corsci.2008.03.002] https://doi.org/10.1016/j.corsci.2008.03.002
  10. A. V. Timoshenko and Y. V. Magurova, Surface and Coatings Technology, 199, 135 (2005). [DOI: http://dx.doi.org/10.1016/j.surfcoat.2004.09.036] https://doi.org/10.1016/j.surfcoat.2004.09.036
  11. J. Liang, B. Guo, J. Tian, H. Liu, J. Zhou and T. Xu, Applied Surface Science, 252, 345 (2005). [DOI: http://dx.doi.org/10.1016/j.apsusc.2005.01.007] https://doi.org/10.1016/j.apsusc.2005.01.007
  12. Q. Cai, L. Wang, B. Wei, and Q. Liu,, Surface and Coatings Technology, 200, 3727 (2006). [DOI: http://dx.doi.org/10.1016/j.surfcoat.2005.05.039] https://doi.org/10.1016/j.surfcoat.2005.05.039
  13. H. Y. Hsiao, H. C. Tsung, and W. T. Tsai, Surface and Coatings Technology, 199, 127 (2005). [DOI: http://dx.doi.org/10.1016/j.surfcoat.2004.12.010] https://doi.org/10.1016/j.surfcoat.2004.12.010
  14. S. Verdier, M. Boinet, S. Maximovitch, and F. Dalard, Corrosion. Science., 47, 1427 (2005). [DOI: http://dx.doi.org/10.1016/j.corsci.2004.07.038] https://doi.org/10.1016/j.corsci.2004.07.038
  15. Y. G. Ko, E. S. Lee, and D. H. Shin, Journal of Alloys and Compounds, 586, S357 (2014). [DOI: http://dx.doi.org/10.1016/j.jallcom.2013.03.015] https://doi.org/10.1016/j.jallcom.2013.03.015
  16. Y. Ma, H. Hu, D. Northwood, and X. Nie, Journal of Materials Processing Technology, 182, 58 (2007). [DOI: http://dx.doi.org/10.1016/j.jmatprotec.2006.07.007] https://doi.org/10.1016/j.jmatprotec.2006.07.007
  17. H. F. Guo, M. Z. An, H. B. Huo, S. Xu, and L. J. Wu, Applied Surface Science, 252, 7911 (2006). [DOI: http://dx.doi.org/10.1016/j.apsusc.2005.09.067] https://doi.org/10.1016/j.apsusc.2005.09.067

Acknowledgement

Supported by : 인천대학교