Influence of Applied Frequency on Microstructural and Electrochemical Characteristics of Ceramic Coating Produced on Al-Mg Alloy by Pulsed Plasma Electrolytic Oxidation

• Authors: J. Lee , S. Lee , S. Kim
• Languages of publication: EN

Abstracts

EN

Plasma electrolytic oxidation (PEO) coating is gaining attention as a promising surface treatment technique for lightweight metals and alloys such as Al, Mg and Ti. The coating involves complex interactions among various process parameters including substrate composition, current modes and electrolyte composition. In this study, ceramic coating was produced in silicate based alkaline solution on Al-Mg alloy by pulsed PEO with different applied frequencies (100, 500, 1000, 2000 Hz). The resultant coating was characterized using FE-SEM, EDS and HR-XRD. The electrochemical characteristics of the PEO coating were also investigated in seawater solution. It was found that changing frequency in the PEO process had a prominent effect on both surface and cross-sectional morphology of the coating. The electrochemical studies indicated that the pulsed PEO have improved the corrosion resistance of the Al-Mg substrate. In particular, the applied frequency of 100 Hz has produced one order of magnitude lower corrosion current density than that of the Al-Mg substrate.

Keywords

EN

81.16.Pr

Discipline

• 81.16.Pr: Micro- and nano-oxidation(see also 82.37.Np Single molecule reaction kinetics)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2016
• Volume: 129
• Issue: 4
• Pages: 753-758

Dates

published

2016-04

Contributors

author

J. Lee

• Korea Testing & Research Institute, Key Industry Division, Jongga-ro 15, Ulsan, 44412, Korea

author

S. Lee

• Kunsan National University, Department of Power System Engineering, Daehak-ro 558, Kunsan-si, Jeonbuk, Korea

author

S. Kim

• Division of Marine Engineering, Mokpo National Maritime University, Haeyangdaehak-Ro 91 Mokpo-si, Jeonnam, 530-729 Korea

References

• [1] R.H.U. Khan, A.L. Yerokhin, T. Pilkington, A. Leyland, A. Matthews, Surf. Coat. Technol. 200, 1580 (2005), doi: 10.1016/j.surfcoat.2005.08.092
• [2] E.V. Parfenov, A.L. Yerokhin, A. Matthews, Surf. Coat. Technol. 201, 8661 (2007), doi: 10.1016/j.surfcoat.2007.04.044
• [3] R.O. Hussein, D.O. Northwood, X. Nie, J. Vac. Sci. Technol. A 28, 766 (2010), doi: 10.1116/1.3429583
• [4] A.L. Yerokhin, X. Nie, A. Leyland, A. Matthews, S. Dowey, Surf. Coat. Technol. 122, 73 (1999), doi: 10.1016/S0257-8972(99)00441-7
• [5] V. Dehnavi, B.L. Luan, D.W. Shoesmith, X.Y. Liu, S. Rohani, Surf. Coat. Technol. 226, 100 (2013), doi: 10.1016/j.surfcoat.2013.03.041
• [6] G. Sundararajan, L.R. Krishna, Surf. Coat. Technol. 167, 269 (2003), doi: 10.1016/S0257-8972(02)00918-0
• [7] P.S. Santos, H.S. Santos, S. Toledo, Mat. Res. 3, 104 (2000), doi: 10.1590/S1516-14392000000400003
• [8] R. Hussein, D.O. Northwood, X. Nie, Mat. Sci. Applic. 5, 124 (2014), doi: 10.4236/msa.2014.53017
• [9] Z. Yao, Y. Jiang, Z. Jiang, F. Wang, J. Mater. Sci. 42, 9434 (2007), doi: 10.1007/s10853-007-1842-0
• [10] R.C. Barik, J.A. Wharton, R.J.K. Wood, K.R. Stokes, R.L. Jones, Surf. Coat. Technol. 199, 158 (2005), doi: 10.1016/j.surfcoat.2004.09.038
• [11] A.D. Pogrebnyak, A.S. Kaverina, M.K. Kylyshkanov, Prot. Met. Phys. Chem. Surf. 50, 72 (2014), doi: 10.1134/s2070205114010092
• [12] Y. Yang, H. Wu, J. Mater. Sci. Technol. 26, 865 (2010), doi: 10.1016/S1005-0302(10)60138-7
• [13] E. Matykina, A. Berkani, P. Skeldon, G.E. Thompson, Electrochim. Acta 53, 1987 (2007), doi: 10.1016/j.electacta.2007.08.074

Identifiers

DOI

10.12693/APhysPolA.129.753