Abstract: It is of great important in the research and application of coating systems for tribological applications to evaluate coating /substrate bonding strength in a proper test procedure. Mechanical evaluations of a widely adopted coating shear bond strength test standard were conducted via the finite element method. Analyses of the stress distribution on the coating /substrate interface indicated that significant errors would be introduced if this test standard were used to determine coating shear bond strength. A new test procedure with modified specimen shape and dimension was proposed, which was then verified for effectiveness.

Key words: Bond strength, Coat, Finite element method, Economic performance, ORC, Pinch point temperature difference assignment