What are the reasons for the delamination of diamond tool coatings, and what are the forms of delamination? During the processing and use of electroplated diamond tools, factors such as the size of the abrasive force, temperature changes, and impacts on the workpiece can cause the metal coating of the diamond tool to detach from its substrate, leading to the delamination of the diamond tool coating. Delamination is generally localized, with complete delamination being very rare. The main reasons for delamination are process issues during the production of electroplated diamond tools, as any minor error in any process can lead to coating delamination. The primary forms of delamination are typically three:

One: Delamination to the substrate surface: Both the diamond-coated metal coating and the non-diamond metal undercoating separate from the steel substrate.

The layer peeling down to the metallic undercoat: This means that the metallic undercoat without diamond is not separated from the steel substrate; it is merely the metallic coating containing diamond that has peeled off from the metallic undercoat.

Layer separation between the coating and the metal layer in diamond tool coatings occurs, where the metal coating in contact with the workpiece is not related to normal wear. This phenomenon is not easily noticed by users, leading to a reduced service life of diamond tools and increased production costs. Therefore, during normal operation, if continuous large holes appear on the surface of diamond tools, attention should be paid to prevent the detachment of the tool coating.