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Galvanic corrosion of magnesium alloy and aluminum alloy by kelvin probe

  • Metallic materials
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Abstract

Galvanic corrosion on samples of AZ91D magnesium alloy coupled with 2A12 aluminum alloy during neutral salt spray test was investigated. The variations of the surface potential were measured using scanning kelvin probe (SKP). The results showed that galvanic effect on the corrosion of AZ91D magnesium alloy is closely related to the potential difference between the anodic and cathodic materials. In the initial period, corrosion only occurred in a narrow area at the coupling interface because of the limited distance galvanic current. Then, the corrosion rate of 2A12 aluminum alloy was accelerated due to its poor stability in strong alkali environment, which was attributed to the strong alkalization caused by the corrosion of AZ91D magnesium alloy. With the increase of the potential of 2A12 aluminum alloy as a result of the continuous covering of corrosion products, the potential difference between the two materials was enlarged, which enhanced the galvanic corrosion.

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References

  1. Song G L, Atrens A. Understanding Magnesium Corrosion a Framework for Improved Alloy Performance[J]. Advanced Engineering Materials, 2003, 5 (12) 837–858

    Article  Google Scholar 

  2. Makar G L, Kruger J. Corrosion of Magnesium[J]. International Materials Reviews, 1993, 38(3):138–153

    Article  Google Scholar 

  3. Song G L, St John D. Corrosion of Magnesium Alloys in Commercial Engine Coolant[J]. Materials and Corrosion, 2005, 56 (1) 15–23

    Article  Google Scholar 

  4. Jia J X, Song G L, Atrens A. Influence of Geometry on Galvanic Corrosion of AZ9ID Coupled to Steel[J]. Corrosion Science, 2006, 48(8): 2 133–2 153

    Article  Google Scholar 

  5. Song G L, Atrens A. Corrosion Mechanism of Magnesium Alloys[J]. Advanced Engineering Materials, 1999, 1(1):11–13

    Article  Google Scholar 

  6. Xiao K, Dong C F, Li X G, et al. Research on Atmospheric Galvanic Corrosion Laws of Magnesium Alloys[J]. Rare Metal Materials and Engineering, 2006, 35(11): 1 716–1 719

    Google Scholar 

  7. Xiao K, Dong C F, Li X G, et al. Research on Atmospheric Galvanic Corrosion Evaluation of Magnesium Alloy[J]. Rare Metal Materials and Engineering, 2007, 36(2): 201–207

    Google Scholar 

  8. Dong C F, Xiao K, Li J Q, et al. Atmospheric Corrosion Behavior of AM60 Magnesium Alloy Coupled with Cu Alloy and Al alloy[J]. Transactions of Nonferrous Metals Society of China, 2005, 15(12): 1 938–1 944

    Google Scholar 

  9. Tong Z S, Zhang W, Li J Q, et al. Initial Laws of Atmospheric Galvanic Corrosion for Magnesium Alloys[J]. Transactions of Nonferrous Metals Society of China, 2004, 14(4): 554–561

    Google Scholar 

  10. Song G L, Johannesson B, Hapugoda S, et al. Galvanic Corrosion of Magnesium Alloy AZ91D in Contact with an Aluminium Alloy, Steel and Zinc[J]. Corrosion Science, 2004, 46(4): 955–977

    Article  Google Scholar 

  11. Stratmann M. The Investigation of the Corrosion Properties of Metals Covered With Adsorbed Electrolyte Layers a New Experimental Technique[J]. Corrosion Science, 1987, 27(8): 869–872

    Article  Google Scholar 

  12. Stratmann M, Streckel H. On the Atmospheric Corrosion of Metals which are Covered with Thin Electrolyte Layers-I. Verification of the Experimental Technique[J]. Corrosion Science, 199, 30 (6-7): 681-696

  13. Stratmann M, Streckel H. On the Atmospheric Corrosion of Metals Which are Covered with Thin Electrolyte Layers-II. Experimental Results[J]. Corrosion Science, 1990, 30 (6-7): 697–714

    Article  Google Scholar 

  14. Stratmann M, Streckel H. On the Atmospheric Corrosion of Metals which are Covered with Thin Electrolyte Layers-? the Measurement of Polarisation Curves on Metal Surfaces which are Covered by Thin Electrolyte Layers[J]. Corrosion Science, 1990, 30 (6-7): 715–734

    Article  Google Scholar 

  15. Tahara, Akira, Kodama, et al. Potential Distribution Measurement in Galvanic Corrosion of Zn/Fe Couple by Means of Kelvin Probe[J]. Corrosion Science, 2000, 42(4): 655–673

    Article  Google Scholar 

  16. Song G L, Atrens A, St John D, et al. The Electrochemical Corrosion of Pure Magnesium in 1 M NaCl[J]. Corrosion Science, 1997, 39 (5) 855–875

    Article  Google Scholar 

  17. Elola A S, Otero T F, Porro A. Evolution of the Pitting of Aluminum Exposed to the Atmosphere[J]. Corrosion, 1992, 48(10): 854–863

    Article  Google Scholar 

  18. Graedel T E. Corrosion Mechanisms for Aluminum Exposed to the Atmosphere[J]. Journal of the Electrochemical Society, 1989, 136(4): 204–212

    Article  Google Scholar 

  19. Grundmeier G, Schmidt W, Stratmann M. Corrosion Protection by Organic Coatings: Electrochemical Mechanism and Novel Methods of Investigation[J]. Electrochim Acta, 2000, 45(15/16): 2 515–2 533

    Article  Google Scholar 

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Authors and Affiliations

  1. Corrosion and Protetion Center, University of Science and Technology Beijing, Beijing, 100083, China

    Kui Xiao  (肖葵), Chaofang Dong, Junsheng Wu & Xiaogang Li

  2. Society Service Center, China Association for Science and Technology, Beijing, 100081, China

    Dan Wei

  3. Ningbo Institute of Material Technology & Engineering, Chinese Academy of Sciences, Ningbo, 315201, China

    Xiaogang Li

Authors
  1. Kui Xiao  (肖葵)
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  2. Chaofang Dong
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  3. Dan Wei
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  4. Junsheng Wu
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  5. Xiaogang Li
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Corresponding author

Correspondence to Kui Xiao  (肖葵).

Additional information

Funded by the National Natural Science Foundation of China (No. 51271032)

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Xiao, K., Dong, C., Wei, D. et al. Galvanic corrosion of magnesium alloy and aluminum alloy by kelvin probe. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 31, 204–210 (2016). https://doi.org/10.1007/s11595-016-1353-4

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  • DOI: https://doi.org/10.1007/s11595-016-1353-4

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