Microstructure, corrosive wear and electrochemical properties of Al₂O₃ reinforced FeAl coatings by laser cladding

Abstract

Purpose

This study aims to investigate the influences of Al₂O₃ mass fraction on the corrosive wear and electrochemical behaviors of FeAl–xAl₂O₃ coatings.

Design/methodology/approach

FeAl–xAl₂O₃ coatings were prepared on S355 steel by laser cladding to improve its corrosive wear and electrochemical properties.

Findings

The average coefficients of friction and wear rates of FeAl–xAl₂O₃ coatings are decreased with the Al₂O₃ mass fraction, and the Al₂O₃ plays a positive role in the corrosion wear resistance. Moreover, the charge transfer resistance of FeAl–xAl₂O₃ coatings is increased with the Al₂O₃ mass fraction, showing the FeAl–15%Al₂O₃ coating has the best corrosion resistance. The findings show the corrosion resistance of FeAl–15%Al₂O₃ coating is the highest among the three kinds of coatings.

Originality/value

Al₂O₃ was first added into FeAl coatings to further improve its corrosive wear and electrochemical properties by laser cladding.

Citation

Haoming, Y. and Dejun, K. (2024), "Microstructure, corrosive wear and electrochemical properties of Al₂O₃ reinforced FeAl coatings by laser cladding", Anti-Corrosion Methods and Materials, Vol. 71 No. 6, pp. 745-754. https://doi.org/10.1108/ACMM-03-2024-2987