METHOD FOR DETERMINING THE ADHESIVE AND COHESIVE STRENGTHS OF ADHESION OF METAL COATINGS TO A METAL SURFACE Russian patent published in 2023 - IPC G01N19/04 

FIELD: metal processing.

SUBSTANCE: determining the adhesion and cohesive strengths of adhesion of metal coatings to a metal surface used in various branches of engineering, where various methods of applying metal coatings to a metal surface are used to impart improved physical and mechanical characteristics to the surface. Production of a cylindrical substrate with flat ends, coating its working surface, machining of the coating end to obtain a support platform, installation of the sample in the cylindrical hole of the matrix so that the machined end of the coating faces the hole in the matrix, tearing off the coating from the substrate by punching, determination of the maximum load required to tear off the coating layer, and from its value, the calculation of the strength value. In this case, the coating is applied to the surface of one of the flat ends of the substrate, and during machining of the coating end, a support platform and a coated cylindrical protrusion with a diameter corresponding to the diameter of the hole in the matrix and a height exceeding the coating thickness are obtained on the substrate. After that, from the side of the opposite end of the substrate, coaxially with the protrusion to the depth of the substrate thickness, a blind hole is made with a diameter corresponding to the diameter of the rod. The resulting sample is installed with a cylindrical protrusion into the matrix hole and the coating is torn off from the substrate using a rod by forcing the coating relative to the sample.

EFFECT: improved manufacturability of the method and reliability of test results.

1 cl, 4 dwg