Surface Finishing Protection of Magnesium Against Corrosion and Wear
ELB - Eloxalwerk Ludwigsburg Helmut Zerrer and the Fraunhofer Institute for Laser Technology ILT have jointly developed a process that protects magnesium components from corrosion and wear by applying a protective layer of PEEK that is just a few micrometers thick.
In order to provide a component with the protective layer made of the high-performance plastic PEEK (polyetheretherketone), it is precisely applied to the component together with the required additives. Then, a twin-beam laser system ensures that the PEEK is selectively melted at certain spots. The result is an extremely thin high-performance polymer surface that protects the material against corrosion and abrasion. It is also possible to apply a protective layer to specific areas of the component that are subject to stress.
According to ELB, friction and wear could be reduced in tests to such an extent that the new coating achieves a 100 times longer service life compared to existing systems available on the market. Possible areas of application for the new coating technology are moving parts in motors, gearboxes or bearings - i.e. wherever temperature resistance or low friction and thus low wear are required.
This article was first published by konstruktionspraxis.
Original by Dorothee Quitter / Translation by Alexander Stark