AMPP Store - Products tagged with 'friction material'

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Brake Pads: Effect Of Galvanic Current On The Corrodibility Of Friction Materials And Backplates

Product Number: 51322-17926-SG

Author: Marco Bandiera, Arianna Pavesi, Fabio Manzoni, Bozhena Tsyupa, Andrea Bonfanti, Alessandro Mancini, Federico Bertasi

Publication Date: 2022

$20.00

The brake system is a core component of cars, motorbikes, bikes, airplanes etc.. Its main task is to modulate the speed of moving vehicles by converting the kinetic energy into heat.^1,2 In the case of modern cars or motorbikes, the speed modulation can be performed by using the so-called disc-brake system.^1,2,3,4,5,6 This generates the braking torque by forcing two brake pads against a disc by the means of a caliper.^2,3,5,6 In the case of cars, the disc and the caliper are enclosed within each wheel and, as a consequence, can be exposed to corrosion phenomena, mostly related with atmospheric or environmental conditions.^1,3,7,8

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Corrosion Phenomena in Braking Systems

Product Number: 51320-14550-SG

Author: Marco Bandiera, Andrea Bonfanti, Andrea Mauri, Alessandro Mancini, Massimiliano Bestetti, Federico Bertasi

Publication Date: 2020

$20.00

In this work selected corrosion phenomena occurring in disc brake systems are reviewed. For the first time, a galvanic series, summarizing the electrochemical performance of several brake system components, is presented and case studies are discussed as well. The case studies focus on corrosion issues which are related with the three major components of a car disc brake system, namely the: a) Aluminum caliper; b) brake pads and associated friction materials; and c) cast iron disc. It is shown that: a) the parameters for the anodization of Aluminum calipers should be carefully tuned on the basis of the specific Al alloy, in order to obtain an anodic layer capable to withstand the galvanic coupling existing between the caliper and nobler components; b) friction materials composition must be optimized in order to avoid shear adhesion phenomena between brake pad and disc due to the growth of corrosion products at the interface between the two; and c) it is possible to mitigate the corrosion of cast iron brake discs by modulating the carbon morphology, alloy elements concentration and microstructure. The manuscript demonstrates that electrochemical techniques are of fundamental importance in order to pursue a corrosion-resistance-oriented design of future braking systems for automotive applications.

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Physico-Chemical Characterization of Corrosion Scales in Braking Systems

Product Number: 51320-14687-SG

Author: Marco Bandiera, Andrea Bonfanti, Andrea Mauri, Alessandro Mancini, Massimiliano Bestetti, Federico Bertasi

Publication Date: 2020

$20.00

In this work selected corrosion phenomena occurring in disc brake systems are reviewed. For the first time, a galvanic series, summarizing the electrochemical performance of several brake system components, is presented and case studies are discussed as well. The case studies focus on corrosion issues which are related with the three major components of a car disc brake system, namely the: a) Aluminum caliper; b) brake pads and associated friction materials; and c) cast iron disc. It is shown that: a) the parameters for the anodization of Aluminum calipers should be carefully tuned on the basis of the specific Al alloy, in order to obtain an anodic layer capable to withstand the galvanic coupling existing between the caliper and nobler components; b) friction materials composition must be optimized in order to avoid shear adhesion phenomena between brake pad and disc due to the growth of corrosion products at the interface between the two; and c) it is possible to mitigate the corrosion of cast iron brake discs by modulating the carbon morphology, alloy elements concentration and microstructure. The manuscript demonstrates that electrochemical techniques are of fundamental importance in order to pursue a corrosion-resistance-oriented design of future braking systems for automotive applications.

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Sticking Phenomena at the Brake Pad – Disc Interface: An Open Call for Electrochemists

Product Number: 51321-16429-SG

Author: Marco Bandiera

Publication Date: 2021

$20.00

Products tagged with 'friction material'

Brake Pads: Effect Of Galvanic Current On The Corrodibility Of Friction Materials And Backplates

Corrosion Phenomena in Braking Systems

Physico-Chemical Characterization of Corrosion Scales in Braking Systems

Sticking Phenomena at the Brake Pad – Disc Interface: An Open Call for Electrochemists

Association for Materials Protection and Performance