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Effect of laser remelting on the microstructure and corrosion resistance of plasma sprayed Fe-based coating

  • Metallic Materials
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Abstract

Fe-based amorphous and nanocrystalline coatings were fabricated by air plasma spraying. The coatings were further treated by laser remelting process to improve their microstructure and properties. The corrosion resistance of the as-sprayed and laser-remelted coatings in 3.5wt% NaCl and 1 mol/L HCl solutions was evaluated by electrochemical polarization analysis. It was found that laser-remelted coating appeared much denser than the as-sprayed coating. However, laser-remelted coating contains much more nanocrystalline grains than the as-sprayed coatings, resulting from the lower cooling rate in laser remelting process compared with plasma spraying process. Electrochemical polarization results indicated that the laser-remelted coating has great corrosion resistance than the as-sprayed coating because of its dense structure.

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Authors and Affiliations

  1. School of Materials Science and Engineering, Chang’an University, ** Jiang  (姜超**), Junxing Wang, Yazhe ** Jiang  (姜超**) & Xuding Song

Authors
  1. Chao** Jiang  (姜超**)
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  2. Junxing Wang
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  3. Jianjun Han
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  4. Yuan Lu
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  5. Yazhe **ng
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  6. Yongnan Chen
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  7. Xuding Song
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Corresponding author

Correspondence to Chao** Jiang  (姜超**).

Additional information

Funded by the Special Found for Basic Scientific Research of Central Colleges, Chang'an University (2014G1311093) and the AQSIQ Technology Program Project (2013QK111)

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Jiang, C., Wang, J., Han, J. et al. Effect of laser remelting on the microstructure and corrosion resistance of plasma sprayed Fe-based coating. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 30, 804–807 (2015). https://doi.org/10.1007/s11595-015-1231-5

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  • DOI: https://doi.org/10.1007/s11595-015-1231-5

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