Abstract
UDC 621.35
This article discusses an in situ method for the diagnostics of the hard anodizing process based on the impedance spectroscopy, which allows for the estimation of the coating thickness during treatment. The experimental results are given for the hard anodizing of aluminum alloys used in the aircraft industry. Parameters of an equivalent circuit of the electrolyzer were specified and the regularities of their evolution were established. A diagnostic model was proposed and its efficiency was demonstrated for an industrial serial production.
Keywords: hard anodizing, impedance spectroscopy, coating thickness, aluminum alloy, diagnostics.