Abstract
This paper describes the effect of combined addition of rare earth elements namely CeO2 and La2O3 in Ni-base alloy coatings. The rare earth addition refines microstructure, increases hardness, and abrasive wear resistance of coatings. The abrasive wear behavior of these coatings was investigated using four factors load (L), abrasive size (A), sliding speed (S), and temperature (T) with three levels of each factor using RSM. ANOVA was carried out to determine the significant factors and interactions. Investigation showed that the load, abrasive size, and sliding speed were the main significant factors while load and abrasive size, load and sliding speed, abrasive size and sliding speed were the main significant interactions. Thus, an abrasive wear model was developed in terms of significant factors and their significant interactions. The validity of the model was evaluated by conducting experiments under different conditions. A comparison of modeled and experimental results showed 3-8% error.
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Sharma, S. Abrasive Wear Study of Rare Earth Modified Coatings by Statistical Method. J Therm Spray Tech 21, 773–781 (2012). https://doi.org/10.1007/s11666-012-9784-8
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DOI: https://doi.org/10.1007/s11666-012-9784-8