Investigation of the coatings applied onto brake discs on disc-brake pad pair

In severe conditions, braking may cause the temper-ature on the disc-pad interface to rise up to 800 °C 1 .At such a temperature, the properties of organic com-pounds are disrupted, coefficient of friction (CoF) de-creases, and the rate of wear increases exponentially.This phenomenon is called “fade” 2 . Ideal brake pads,without causing any fades, are expected to function inuniform and stable friction movement 3 .Thermal spray coatings, used to enhance thermalproductivity of the systems, to increase the workingtemperature, and to improve corrosion, oxidization orwear behavior 4-5 , provide a good engineering ap-proach for surface compound characteristics 6-7 . San-ford and Jain 8 and Blau et al. 9 have extensivelystudied the coating powders that can be commerciallyused in the coating of brake discs. This study aims toidentify the commercially viable hard coatings for discsand to determine their friction coefficient, wear, BTVand DTV characteristics. Two different coatings andcoating methods have been selected for this purpose.