Structural evolution, phase transition and high-temperature tribological properties of Cr₃C₂ reinforced WC-10Co4Cr coatings by laser cladding Available to Purchase

The aim was to investigate the effect of Cr₃C₂ mass fraction the high-temperature tribological performance of laser cladded WC-10Co₄Cr coating, in which the Cr₃C₂ played the role in enhancing wear resistance.

The WC-10Co₄Cr-xCr₃C₂ (x = 5%, 10% and 15%) were prepared on H13 steel using laser cladding, and their coefficients of friction and wear rates at 500°C were investigated using a ball-on-disc wear tester.

The WC-10Co4Cr-xCr₃C₂ powders are composed of WC, Co₃W₃C, CoCr and Cr₃C₂ phases, and the defects such as pores and cracks are reduced by the addition of Cr₃C₂. The coefficient of friction and wear rats of WC-10Co4Cr-xCr₃C₂ coatings are decreased with the Cr₃C₂ mass fraction, showing that the addition of Cr₃C₂ significantly enhances the tribological properties of WC-10Co₄Cr coating. The wear mechanism is adhesive wear and oxidation wear, and the Cr₃C₂ plays the roles of friction reduction and wear resistance, which provides valuable insights into optimizing the performance of WC-10Co₄Cr coating.

The Cr₃C₂ was first added into the laser cladded WC-10Co₄Cr coating, which improved its high-temperature tribological performance.

The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-12-2024-0471/