Development and Industrialization of a Laser-Based Hard Material Coating System for Brake Discs
Fine dust emissions caused by road transportation are being investigated and discussed in detail by governments and vehicle manufacturers. Brake abrasion contributes to a significant extent to this ambient air pollution. There are different approaches to minimize this brake disc abrasion, one of the most promising is the coating of the friction surface with wear resistant layers, i.e. with metal matrix composite (MMC). One coating technology, the extreme high-speed laser material deposition, has proven to be extremely effective, especially in combination with appropriately adapted brake pads. In detailed investigations with various brake disc manufacturers, HPL Technologies in Aachen, Germany, examined influences on the quality such as reliable corrosion and wear resistance.