Recent development of experimental and numerical analysis of adhesion strength of thermal spray coatings

Abstract

Some important developments of adhesion strength research for thermal spray coating systems have been reviewed in the present paper. The following topics were included: the influence of spraying pre-treatment on adhesion strength, sources and mechanisms of adhesion strength in coatings, some algorithms and calculation of numerical models based on the energy release rate in fracture mechanics, and the effects and relative discussions of residual stress in thermal spray coatings on the adhesion strength. These topics would provide some important insights into life prediction of thermal spray systems based on the adhesion strength.

Keywords:

• Thermal spray coating
• Adhesion strength
• Residual stress
• Energy release rate

Acknowledgement

This material was based upon work supported by the National Science Foundation of China (Grant Nos. 51305453 and 51175513).