Microstructures and immersion corrosion performances of arc sprayed amorphous Al-Ti-Ni coating on S355 structural steel

Abstract

Purpose

In this study, an amorphous Al-Ti-Ni coating was fabricated on S355 steel using an arc spraying, and its corrosion behavior immersed in 3.5 per cent NaCl solution for 720 h was discussed, which provided an experimental basis for the application of arc sprayed Al-Ti-Ni coating on S355 steel on marine platform.

Design/methodology/approach

An amorphous Al-Ti-Ni coating was sprayed on S355 structural steel using an arc spraying. The surface-interface morphologies, chemical element compositions and phases of the obtained Al-Ti-Ni coating were analyzed using a scanning electron microscope, energy dispersive spectrometer and X-ray diffractometer, respectively. The distributions of chemical elements on the coating surface and interface were analyzed using an energy spectrum scanning; the bonding mechanism between the coating and the substrate was also discussed.

Findings

Financial support for this research by the Key Research and Development Project of Jiangsu Province (BE2016052).

Originality/value

In this study, an amorphous Al-Ti-Ni coating was fabricated on S355 steel using an arc spraying, its corrosion behavior immersed in 3.5 per cent 25 NaCl solution for 720 h was discussed.

Citation

Haixiang, C. and Dejun, K. (2018), "Microstructures and immersion corrosion performances of arc sprayed amorphous Al-Ti-Ni coating on S355 structural steel", Anti-Corrosion Methods and Materials, Vol. 65 No. 3, pp. 271-280. https://doi.org/10.1108/ACMM-09-2017-1847