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 Technology at Chemnitz University of Technology are involved, a non-destructive rapid test for evaluating the local corrosion behaviour of thermally sprayed coatings is being developed. The scientists at Chemnitz University of Technology constructed a mobile measuring cell for this purpose, in which the test procedure was implemented. The method is being iteratively tested in extensive series of measurements on practical coating systems from Putzier 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. During the remaining funding period, JELN GmbH will continue to develop the range of gel-like corrosion media for use on different coating systems. The aim is to determine different coating characteristics with regard to corrosion behaviour 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 Chair of Materials and Surface Technology, Institute of Materials Science and 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

Measurement setup for testing a thermally sprayed coating on a rotationally symmetrical component
Photo: WOT, TU Chemnitz

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