The Impact and Sliding Wear Performance of Thermal Spray HVAF Thick Carbide Coatings on Steel Substrates

This study assesses the sliding wear and impact behavior of thick carbide coatings deposited on hot-rolled steel by high-velocity airfuel (HVAF) spraying. Coating samples are evaluated based on scratch, ball-on-disc sliding, normal impact, and compound sliding impact tests and efforts are made to rank materials according to tribological criteria including coating failure mode, friction response, and wear. The approach is intended to provide insights for product designers specifying thermal spray coatings for steel components and structures from a wear performance perspective.