Methodological and Application Aspects of Indirect Analytical Determination of Coating Thickness on Metal-Coated Superabrasive Grits

Аннотация

The paper reviews the publications addressing the determination of the coating thickness on metal-coated grits of superhard materials. The available approaches to defining this problem have been analyzed and the methodological features of solving it have been studied. The present investigations have demonstrated that in the case where the actual 3D shape of a grit is a priori unknown the most appropriate approach is that which includes the outer specific surface in the coating thickness calculations. The author has been the first to propose to use an extrapolation-affine 3D model of a grit in such calculations. For synthetic diamond grits AS125 400/315 as an example, this 3D model has been shown to have a definite advantage over a sphere- and cube-shaped 3D model. The application of the extrapolation-affine 3D model of a grit provides a more accurate determination of the coating thickness on metal-coated diamond grits. The proposed method based on this methodological innovation is also suitable for grits of other abrasive materials.