This book systematically summarizes the development process of thermal spraying technology, and elaborates on preparation, characterization, and testing methods of plasma spraying layers. Plasma spraying is a useful technology for remanufacturing. The life evaluation of remanufacturing product by using plasma spraying can be predigested to the life evaluation of surface plasma sprayed coating. This book also details the contact fatigue behavior of coatings, application of acoustic emission technology and rolling contact fatigue behavior of thermal sprayed coatings. This book will serve as a reference book for researchers in surface engineering, remanufacturing and other related fields.