NDLI: Microstructure and detachment mechanism of friction layers on the surface of brake shoes

Content Provider	Springer Nature Link
Author	Blau, Peter J.
Copyright Year	2003
Abstract	Automotive and truck brake shoe materials are complex composites of metals, ceramics, and polymers. These are designed to provide stable, reliable frictional performance over a range of vehicle operating conditions, exhibit acceptable wear life, and offer freedom from noise and sensible vibrations. During their use, friction brakes tend to form thin, third-body layers on their contact surfaces. Such tribo-layers play a part in frictional characteristics, and therefore it is of interest to study their structure and properties. This article describes the structure of the friction-induced layers that formed on commercially manufactured brake shoes on a trailer that was subjected to 4 years of highway driving. The layers consist of a thin, brittle crust of nanoscale particulate material that easily delaminates from the substrate. Polished cross sections were studied with both optical and scanning electron microscopy (SEM). Transmission electron microscopy (TEM) of extracted flakes revealed the complex, fine structure of the friction-induced layer. Realistic brake friction models should not use bulk properties of the starting materials, but rather should incorporate the properties of the fine-grained friction layers.
Starting Page	56
Ending Page	60
Page Count	5
File Format	PDF
ISSN	10599495
Journal	Journal of Materials Engineering and Performance
Volume Number	12
Issue Number	1
e-ISSN	15441024
Language	English
Publisher	Springer-Verlag
Publisher Date	2003-01-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	brake drum brake friction transfer film Characterization and Evaluation of Materials Materials Science Tribology, Corrosion and Coatings Quality Control, Reliability, Safety and Risk Engineering Design
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Materials Science Mechanical Engineering

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