Influence of parameters on the cold spraying FeCoCrMoBCY amorphous coatings

ABSTRACT

The purpose of this paper is to examine the influence of cold spraying parameters on the performance of Fe-based amorphous alloy (FAA) coating. A FeCoCrMoBCY amorphous alloy coating was prepared on a 40Cr substrate by cold-spraying with different gas pressures and temperatures. The results show that the spray temperature has no substantial effect on the amorphous content during deposition. The porosity of the FAA coatings decreases with the increase of the spray parameters. The hardness of the cold sprayed coatings decreases slightly as the spraying parameter decreases. Wear tests show that cold spraying FAA coating can provide excellent wear protection. The high porosity induced by the insufficient deformation of the hard FAA particles leads to an acceleration in corrosion for the substrate. Cold-spraying can be used to fabricate FAA coating with good wear resistance, but sealing is still necessary to guarantee the corrosion resistance since.

KEYWORDS:

• Amorphous alloy coating
• cold spraying
• wear
• corrosion

Acknowledgements

The project was supported by The State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute (grant number: JS1802); This work was finically supported by the National Natural Science Foundation of China (No. 51931008). Guosheng Huang, ZhiZhong Wang and Li Ma conceived and designed the experiments, performed the experiments and analysed the data and wrote the paper. Bin Han and Qi Cao did part of the electrochemical analysis.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

The project was supported by The State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute (grant number: JS1802); this work was finically supported by the National Natural Science Foundation of China (No. 51931008).