METHOD FOR DETERMINATION OF HEAT RESISTANCE OF FUNCTIONAL COATINGS ON TOOL AND STRUCTURAL MATERIALS, USING SYNCHROTRON RADIATION Russian patent published in 2022 - IPC G01N33/208 

FIELD: diagnostics.

SUBSTANCE: invention relates to the field of use of synchrotron radiation for the analysis of a composition, parameters, and characteristics of materials; it can be used for the determination of heat resistance of functional coatings applied to the surface of products of tool and structural materials, used in aerospace, nuclear, mechanical engineering and other industries. A method for the determination of heat resistance of functional coatings on tool and structural materials, using synchrotron radiation, includes the installation of a sample with functional coating on a heated substrate holder in an air atmosphere, radiation of the sample surface with heat-resistant coating with a beam of synchrotron radiation to obtain and record diffractograms characterizing a phase composition of coating during heating to a temperature changing the phase composition of coating. The heating process is carried out in stages, sequentially conducting heating, temperature exposure, and cooling of the sample, heating is carried out to a selected test temperature in the range of 400-1500°C, at each subsequent stage, the temperature is discretely increased with a temperature change step corresponding to the required accuracy, with a growth speed of the sample surface temperature in the range of 20-1500°C/s, while the curve of the sample temperature change corresponds to the actual product temperature curve for the actual operational mode.

EFFECT: increase in the accuracy of determination of the limit operational temperature of coatings on structural and tool materials in air oxidation in oxygen by simulation of real conditions of cyclic or static high-temperature heating and use of high-speed diagnostics of changes of a phase composition of coatings during heating, using synchrotron radiation, and reduction in time costs for tests.

1 cl, 3 dwg