METHOD OF MEASURING THE THICKNESS OF COATING IN THE PROCESS OF PLASMA-ELECTROLYTIC OXIDATION Russian patent published in 2018 - IPC G01B7/06 

FIELD: measurement technology.

SUBSTANCE: use for measuring the thickness of the coating during the process of plasma-electrolytic oxidation of valve metals. Essence of the invention is that the method for determining the thickness of the coating includes measuring the voltage during the coating process, where the average and amplitude values of the processing voltage are measured, then their ratio is found, and the coating thickness h is determined by the formula where k₁ and k₂ – empirical coefficients, depending on the nature of the material being processed and the composition of the electrolyte, determined by calibration curves; U_avg and U_max are average and amplitude values of the processing voltage, respectively.

EFFECT: increasing the accuracy of determining the thickness of the oxide coating for the timely termination of the process of plasma electrolytic oxidation.

1 cl, 5 dwg, 1 tbl