Abstract
In this work, Ni-based alloy coatings with different CeO2 rare earth oxide contents were deposited on carbon steel by flame spray and fusing processing. The tribological behavior of the coatings was studied using a ball-on-flat wear tester under dry sliding, ambient conditions. Hardness testing, field emission gun scanning electron microscopy with attached energy dispersive spectroscopy and oscillating friction and wear testing were employed to characterize the microhardness, microstructure and tribological properties of the coatings. The results indicated that the addition of an appropriate amount of CeO2 could refine and purify the microstructure. The coatings containing 5 wt% CeO2 exhibited the highest wear-resistant properties. Moreover, a new compound phase, Ce2Ni21B6, was formed within the coatings, such that the microhardness values containing this phase were higher than those in the other coatings. Finally, the effects of CeO2 on the coatings and the mechanism describing the sliding wear were discussed.
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This study was financially supported by the National Natural Science Foundation of China (Nos. 51361020 and 51365024).
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Liang, B., Zhang, Z. & Guo, H. Tribological Behavior of Thermal Spray and Fusing Ni-Based Alloy Coatings with Rare Earth Cerium Under Reciprocating Sliding. Trans Indian Inst Met 69, 1943–1950 (2016). https://doi.org/10.1007/s12666-015-0764-9
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DOI: https://doi.org/10.1007/s12666-015-0764-9