This book provides an insight to the students and researchers in the area of slurry erosion. In this study, steel specimens were coated with hard coating materials using plasma spray coating technique. An attempt was made to conduct erosion tests in an environment similar to the actual slurry erosion conditions. In depth study of erosion mechanism was carried out to using SEM images. The explanatory notes & illustration provided in book will serve the purpose of awakening the interest of researcher and motivating them for further research in this area.