Influence of WS2/SnS2 on the tribological performance of copper-free brake pads

Purpose The purpose of this study is to investigate the influence of solid lubricants (tungsten disulfide [WS2]/ Tin disulfide [SnS2]) on the tribological performance of brake pads. Design/methodology/approach In this study, the brake pads were developed by varying the solid lubricants (WS2/SnS2) wi...

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Bibliographic Details
Published in:Industrial lubrication and tribology 2019-04, Vol.71 (3), p.398-405
Main Authors: I, Justin Antonyraj, R, Vijay, D, Lenin Singaravelu
Format: Article
Language:English
Subjects:
Brakes
Braking systems
Cellulose
Crystal structure
Curing
Decomposition
Friction
Graphite
Heat
Ingredients
Lubricants & lubrication
Lubrication
Mapping
Mechanical properties
Organic chemistry
Oxidation
Scanning electron microscopy
Shear strength
Shear tests
Shearing
Solid lubricants
Structural stability
Sulfur
Surface analysis (chemical)
Temperature
Thermal stability
Thermodynamic properties
Three dimensional analysis
Tin disulfide
Tribology
Tungsten disulfide
Wear rate
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Summary:Purpose The purpose of this study is to investigate the influence of solid lubricants (tungsten disulfide [WS2]/ Tin disulfide [SnS2]) on the tribological performance of brake pads. Design/methodology/approach In this study, the brake pads were developed by varying the solid lubricants (WS2/SnS2) without varying the other ingredients. The brake pads were developed as per the industrial procedure. Thermal stability was found for varying ingredients and developed pads. The physical, mechanical and thermal properties of the developed brake pads were analyzed as per the industrial standards. The tribological properties were analyzed using the Chase test. The worn surface analysis was done using scanning electron microscopy, elemental mapping and three-dimensional profile analysis. Findings The experimental results indicate that the WS2-based brake pads possess good physical, chemical and mechanical properties with stable friction and less wear rate due to its good lubrication film formation and thermal stability natures of WS2. Originality/value This paper explains the effect of solid lubricants in brake pads for enhancing the tribological performance by the shearing of crystal structure, thermal stability and tribo film properties of the lubricants.
ISSN:0036-8792
1758-5775
DOI:10.1108/ILT-06-2018-0249