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Effect of post-heat treatment on microstructure and performance of HVOF-sprayed WC–CrC–Ni hard coatings
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DOI：10.1016/j.ijrmhm.2026.107906.png)
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Abstract
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• HVOF WC–CrC–Ni coating exhibited a dense splat morphology with well-retained carbide distribution and minimal oxitation. • Heat treatment at 300 °C induced primarily stress relaxation without significant phase transformation. • Heat treatment at 600 °C, transformations became pronounced with decarburization of WC and enhanced intersplat cohesion. • Heat treatment at 800 °C resulted in extensive phase decomposition and formation of an oxide network. • The as-sprayed condition provides higher corrosion resistance condition provides higher corrosion resistance, 600 °C maximizes hardness and 800 °C improves wear resistance.
Keywords:
High velocity oxy-fuel (HVOF)
WC-CrC-Ni cermet coatings
Heat treatment
Tribological properties
Electrochemical corrosion
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4.6
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5.3K
Citations:
1.4W
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