| Abstract |
| This study focuses on the fabrication of the self-lubricating ceramic composite coating layers with low friction components at high temperatures. Al2O3-15 wt% ZrO2 coatings, that contain solid lubricants such as CaF2, BaF2, h-BN, MoS2, and WS2, are deposited using the atmospheric plasma spray (APS) method at a gun power of 41400 W, and their tribological behaviours are investigated. BaF2, MoS2, and WS2 decompose to β-Ba, Mo, and W, respectively, during the APS coating process. The friction coefficients of the deposited Al2O3-15 wt%ZrO2 composite coating layers are in the range of 0.35 to 0.65. The tribological behaviors of the APSed Al2O3-15 wt% ZrO2-solid lubricant composite coating layers are dominated by the formation of transfer films of wear debris and microcracking during sliding. |
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| Key Words |
| plasma deposition/spray, coating, wear, composites |
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