Influence of Rust Accumulation on Disk Rotor on Frictional Properties of Disk Brake

Nukumizu, Kota; Makizono, Kazuya; Abe, Takenori; Unno, Mitsuo

doi:10.4271/2007-01-3937

Cited by 5 publications

(1 citation statement)

References 3 publications

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“…In recent years, in addition to the phenomenon of friction, the study of brake disc corrosion has aroused growing interest for various reasons, including the impact of corrosion on the friction properties [20][21][22][23], the effect of brake disc corrosion on friction-induced stick-slip [24,25] and the corrosion issues that lead to material transfer from the pad to the disc [26]. In addition, for a comprehensive description of the corrosion process which can lead to stiction, a purely physico-chemical description of the phenomenon may be insufficient since the configuration of the disc/brake pad system builds a thin layer of electrolyte between the two materials, which can account for a significant part of the corrosion and stiction processes, not least because of the potential and concentration gradients that such an arrangement generates [27,28].…”

Section: Introductionmentioning

confidence: 99%

On the local corrosion in a thin layer of electrolyte separating two materials: specific aspects and their contribution to pad-to-disk stiction in automobile brake system

Tigane

Bauwens

Hude

et al. 2020

J Solid State Electrochem

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The stiction phenomenon which results in the adhesion of the brake pad to the disc brake of a vehicle has been investigated from a corrosion point of view. Asbestos-free organic pad that contains copper associated with a cast iron disc was investigated and compared to a model system which consisted in a ceramic pad (chemically inert) associated with the same cast iron disc. The whole system was described as a thin-layer-cell of electrolyte and was studied using different electrochemical methods including polarization curves and impedance spectroscopy.The influence of the cell geometry was pointed out, but the corrosion of the system is enhanced due to the presence of copper in the pad. Indeed, the copper dissolves from the pad and redeposits on the disc. This was confirmed by scanning electron microscopy observations and Raman spectroscopy. A mechanism taking into account the thin-layer geometry was then proposed to account for the role of metallic additive (in this case copper) on the corrosion of the disc.

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