Improving the adhesive strength of coatings from multicomponent materials with thermoelastic phase transformations by external high-energy influences at various processing stages

Abstract

The paper presents the results of a comprehensive study of the influence of external high-energy ultrasonic and electropulse influences on the adhesive strength of a coating from the material with thermoelastic phase transformations (TEPT) at various processing stages: preparing the base; preparing the sprayed material at the finishing stage after coating. It has been shown that as a result of complex high-energy influences at the processing finishing stage, one observes a distinct fusion of the coating from the material with TEPT (Ni-33%, Ti-49%, Zr -49%) with a base and the absence of the interface, confirmed by electron microscopic studies. The fusion zone is 10-20 μm with the coating thickness of 1 mm; there are practically no coating elements in the base material at the depth of 20 μm. The experimental studies have confirmed an increase in adhesive strength by 1.2-1.5 times up to 130-150 MPa.