Abstract
In this research, in order to investigate the adhesive strength of thermal sprayed coating, the scraping shearing test was developed. It was found that the adhesive strength of WC-Co thermal sprayed coating is depending on the dimension of the test piece and the loading position around the interface. That is because the apparent critical shear stresses increase with increasing height of the test piece and decrease with increasing width of the test piece. Also, it is confirmed that the critical distributions of shearing stress and bending stress around at the interface edge depend on the dimension of the test piece by three-dimensional FEM analysis.
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