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Tae-Jun Park 1 Article
Tribological Behavior Analysis of WC-Ni-Cr + Cr3C2 and WC-Ni-Cr + YSZ Coatings Sprayed by HVOF
Tae-Jun Park, Gye-Won Lee, Yoon-Suk Oh
J Powder Mater. 2023;30(5):415-423.   Published online October 1, 2023
DOI: https://doi.org/10.4150/KPMI.2023.30.5.415
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With the increasing attention to environmental pollution caused by particulate matter globally, the automotive industry has also become increasingly interested in particulate matter, especially particulate matter generated by automobile brake systems. Here, we designed a coating composition and analyzed its mechanical properties to reduce particulate matter generated by brake systems during braking of vehicles. We designed a composition to check the mechanical properties change by adding Cr3C2 and YSZ to the WC-Ni-Cr composite composition. Based on the designed composition, coating samples were manufactured, and the coating properties were analyzed by Vickers hardness and ball-on-disk tests. As a result of the experiments, we found that the hardness and friction coefficient of the coating increased as the amount of Cr3C2 added decreased. Furthermore, we found that the hardness of the coating layer decreased when YSZ was added at 20vol%, but the friction coefficient was higher than the composition with Cr3C2 addition.


Journal of Powder Materials : Journal of Powder Materials