Microstructure and tribological properties of amorphous coatings by supersonic atmospheric plasma spraying

doi:10.13251/j.issn.0254-6051.2022.12.035

Abstract

Abstract: Fe-based and Mo-based amorphous coatings are fabricated by the new generation of supersonic atmospheric plasma spraying (SAPS), and microstructure and tribological properties of the coatings were comparatively analyzed. The results show that a small number of pores in the SAPS sprayed Fe-based and Mo-based amorphous coatings lead to high structural density. Compared with Fe-based coating, the Mo-based coating with lower porosity has a lower wear rate (1.1×10^-4μm·N^-1·s^-1) during friction, resulting in a better wear resistance. The wear mechanism of the coatings is mainly abrasive wear and fatigue wear, accompanied by delamination and debris oxidation.

Key words: supersonic atmospheric plasma spraying, amorphous coatings, microstructure, tribological properties, abrasive wear

CLC Number:

TG174.442

He Tao, Wang Xuepeng, Liu Haibo, Liu Qi, Jia Hua, Liu Na, Ding Fei. Microstructure and tribological properties of amorphous coatings by supersonic atmospheric plasma spraying[J]. Heat Treatment of Metals, 2022, 47(12): 210-215.

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