This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Contribution of Lining Additives to the Performance Requirement of Friction Brakes
Technical Paper
2005-01-3927
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Ever since the introduction of friction brakes in vehicles, brake system designers have been striving to improve braking performance. To meet this growing demand for better brakes, lining manufacturers have evaluated numerous additives in their material formulations. These additives provide several different technical properties, the foremost being safety-related features such as frictional stability and resistance to fading. In more recent years, brake noise has become important with the elimination of asbestos fibers in linings, and there is now also a need for a higher frictional coefficient to offset increases in overall vehicle weight. Prolonging the service life of brake components, reducing pad wear, and minimizing rotor wear caused by DTV (Differential Thickness Variation) are other issues that face lining manufacturers. To address all these technical requirements, brake material formulations have become so considerably more complex that increased usage of additives is required.
Common additives used in earlier brake lining formulations were metal powders and metal sulfides. Later it was found that synergistic mixtures of various solids actually improved the tribological properties of lining materials over those using a single solid additive. More recently, considerable work has been done in improving the frictional requirements of some additives by changing their surface properties. As a result, current frictional composites use a complex (and usually proprietary) package of additives to meet the needs of modern friction brakes.
A discussion of various additives and their contribution to the development and performance of friction brake materials are presented in this paper.
Recommended Content
Authors
Topic
Citation
Holinski, R., McIntyre, G., and Hesse, D., "Contribution of Lining Additives to the Performance Requirement of Friction Brakes," SAE Technical Paper 2005-01-3927, 2005, https://doi.org/10.4271/2005-01-3927.Also In
References
- Blau, Peter J. “Compositions, Functions, and Testing of Friction Brake Materials and Their Additives” Oak Ridge National Laboratory August 2001
- Holinski, R. “Effect of Friction Lining Additives on Interfaces of Friction Components” Leeds Brake conference Leeds UK 2002
- Holinski, R Hesse, D. “Change of Interfaces of Friction Components During Braking” Proc. Instn. Mech. Engrs 217 Automobile Engineering
- Holinski, R. “A Review of the Contribution of Solid Lubricants to Performance Improvement of Friction Linings” 3 rd ASLE International Solid Lubricants Conference Denver, Colorado August 5 1984
- Holinski, R. “Improvement of Comfort of Friction Brakes” Global Tribology Conference Vienna 2001