Quality assurance of thermally sprayed coatings through corrosion measurement with gel electrolytes

In the ZIM cooperation project, which has been funded by Aif Projekt GmbH since 1 April 2020 and in which Putzier Oberflächentechnik GmbH and JELN Imprägnierung GmbH as well as the Chair of Materials and Surface Engineering at TU Chemnitz are involved, a non-destructive rapid test for evaluating the local corrosion behaviour of thermally sprayed coatings is being developed. For this purpose, the scientists at TU Chemnitz constructed a mobile measuring cell in which the test procedure was implemented. The procedure is being tested iteratively in extensive series of measurements on practically relevant coating systems from the Putzier company in order to prove its suitability for use. The novel measuring principle with gel-like electrolyte shows characteristic current density potential curves with very good reproducibility. In the remaining funding period, the spectrum of gel-like corrosion media will be further developed by JELN GmbH for use on different coating systems. In this way, different coating characteristics with regard to corrosion behaviour are to be determined in short test durations in the future.

Further information  Dr. Thomas Lindner, Tel. +49 (0)371/531-38287, E-Mail th.lindner@mb.tu-chemnitz.de Professorship of Materials and Surface Engineering, Institute of Materials Science and Materials Engineering at Chemnitz University of Technology.

In the picture from front left: Maximilian Grimm, Dr Thomas Lindner, Pia Kutschmann, Dr Christian Pluta, Olga Schwabe, Kerstin Ernst

Photo: WOT, TU Chemnitz

Measuring set-up for testing a thermally sprayed layer on a rotationally symmetrical component
Photo: WOT, TU Chemnitz

23.9.2021 – Projects of the professorship ( tobias.mueller@mb… )