Investigating load-dependent wear behavior and degradation mechanisms in Cr3C2–NiCr coatings deposited by HVAF and HVOF

Wear resistant coatings that comply with non-toxic environment goals are highly desirable. Cr 3 C 2 –NiCr is a promising alternative to the toxic, ‘Co’- containing WC–Co mitigate wear. The purpose of this study was examine suitability for automotive brake disc application by systematically investigating their dry sliding wear behavior at different test conditions. Therefore, High Velocity Air Fuel (HVAF) and Oxy (HVOF) were employed deposit coatings. powder feedstock as-deposited characterized microstructure phase composition using SEM XRD. Mechanical properties (hardness, fracture toughness), porosity surface topography evaluated. subjected tests normal loads (5 N, 10 N 15 N) alumina ball as counter surface. Coefficient friction (CoF) evolution HVAF HVOF deposited coatings, along performance, obtained load performance ranking processed influenced conditions, demonstrating better resistance than harsh conditions performing under mild Detailed post-wear analysis worn counter-body resulting debris performed reveal degradation mechanisms Findings from work provide new insights into desirable microstructural features wear, which can be further exploited wear-resistant