Adhesion prediction on metal thermal spray coatings

Bonding prediction (presence or absence of adhesion) of metal thermal spray coatings is of theoretical and practical interest. The present paper introduces a simple method for estimating the adhesion performance of metal thermal spray coatings. To improve the conditions expected in the case of poor adhesion, the proposed method can also provide and anticipate suitable types of metal thermal spray coatings to overcome the problem. The expansion coefficient is inventively used as a quality indication for bonding performance of metal thermal spray coatings.