Original scientific paper

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

A. Demir ; Technical Faculty University of Kocaeli, Kocaeli
R. Samur ; Technical Faculty, University of Marmara, Istanbul, Turkey
I. Kiliçaslan ; Technical Faculty University of Kocaeli, Kocaeli

Abstract

While braking, according to the severity of it, thermal, metallurgical, constructive and tribological occurrences emerge on the brake disc-pad interface. In this study, NiCr was sprayed as bonding layer onto the discs, one of which was coated with Al₂O₃-TiO₂ by plasma spray and the other was coated with NiCr-Cr₃C₂ by High Velocity Oxygen Fuel (HVOF). In addition, the discs were tested with inertia dynamometer according to SAE’s J2522 testing procedure. The measurements showed that although the pads of the coated discs were exposed to higher braking temperatures, friction coefficient of the disc coated with NiCr- Cr₃C₂ was obtained 6 % higher compared to the original disc.

Keywords

coating; improving disc performance; Disc Thickness Variation (DTV); Brake Torque Variation (BTV)

Hrčak ID:

35470

URI

https://hrcak.srce.hr/35470

Publication date:

1.7.2009.

Article data in other languages: croatian

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