Deposition behavior of high velocity collided solid ceramic particles onto metallic substrate surface

Abstract

A particular nanostructured ceramic powder can deposit with solid phase by high velocity collision in cold spray process. In this study, the deposition behavior of the solid ceramic particles onto a metallic substrate surface was investigated using nanoscratch test and cross-section observation. There was a correlation in adhesion strength with splat diameter, and generally the smaller splats had higher adhesion strength. According to the deposition and breaking up behavior, the remaining center core after collision exhibited the smaller diameter of splats in spite of similar original feedstock particle size to the larger splats.