Abstract:
Erosion is a serious concern for machinery
dealing with particle-laden fluids. For protection against
erosion, coatings are usually recommended. Laboratory
experiments are conducted to evaluate the erosion rates of
these coatings. Alternatively, one could consider the use of
modeling and simulation to predict the erosion rates.
Although several models are available in literature for bulk
materials, there is limited work reported in this direction for
coatings. In present work, several models from literature
were evaluated for their ability to predict the slurry erosion of
coatings. A model based upon contact-fracture theory (CFT),
proposed in present work, was also evaluated. Another variant of this model considered the effect of splat size. It was
observed that none of the existing models evaluated in the
present work could predict the erosion rates of the coatings.
The proposed CFT model was able to predict the erosion
rates with reasonable accuracy, whereas another variant of
this model based upon splat size was observed to be inappropriate for predicting erosion rates of coatings. Possible
reasons for the observed disparity are discussed.
