Structure, Hardness and Wear Resistance of Detonation Coating Based on Cr3C2-NiCr After Pulse-Plasma Treatment

Dauir Kakimzhanov, Bauvrzhan Rakhadilov, Yuri Tyurin, Oleg Kolisnichenko, Dastan Buitkenov

2023

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DOI 10.1109/nap59739.2023.10310875
Data confidence 70 medium
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Abstract

This paper discusses the results of a study of Cr3C2-NiCr-based detonation coatings after pulse-plasma treatment. It is determined that after pulse plasma treatment (PPT) the surface roughness value decreases by 48% and the coating friction coefficient increases by 2 times, the material microhardness of Cr3C2-NiCr coatings increases from ~12 GPa (initial) to ~16.2 GPa. It was also revealed that after pulse-plasma treatment the resistance of Cr3C2-NiCr coatings to abrasion and erosion wear increases. Pulse-plasma treatment provides formation of qualitative coatings from ceramic-metal materials of Cr3C2-NiCr system with complex heterogeneous structure-phase state where the layered structure of areas of carbide particles and matrix metal in immediate proximity from border “carbide - matrix” with allocation of disperse secondary carbides in matrix is revealed.