Tribology and Materials | Volume 3 | Issue 3 | 2024 | 108-117
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https://doi.org/10.46793/tribomat.2024.014
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Effect of potassium titanate fibres and metal sulphides in the tribological behaviour of brake friction composites
Sathickbasha Katharbasha
1,
Hariharasakthisudhan Ponnarengan2,
Varun Kumar Arulvizhi1,
Venkata Ramarao Mutyala3,
Sivakumar Chandramohan1
1 B.S. Abdur Rahman Crescent Institute of Science and Technology, Chennai, India
2 Dr. Mahalingam College of Engineering and Technology, Pollachi, India
3 Vallurupalli Nageswara Rao Vignana Jyothi Institute of Engineering and Technology, Hyderabad, India
Abstract: In a brake system, brake friction composites are
essential for converting kinetic energy into frictional heat. An optimal
brake friction composite should ensure a stable coefficient of friction
under extreme operational conditions. This study examines the
tribological performance of brake friction composites incorporating
potassium titanate fibres and metal sulphide lubricants in standard
brake pad formulation. Brake friction composites were engineered by
varying the potassium titanate fibre content from 10 to 30 %, while the
lubricant mixture (comprising graphite, MoS2, Bi2S3 and Sb2O3) was
proportionally adjusted from 27 to 7 %, with the filler and binder
concentrations held constant throughout the formulation. The phenolic
resin-based composites were characterised for their physical, chemical
and mechanical properties in accordance with the IS 2742 (Part 4)
standard. The tribological performance of the fabricated composites was
evaluated using a rotating drum setup, following the SAE J661 procedure.
The worn surfaces of the samples were analysed to identify wear
mechanisms utilising scanning electron microscopy (SEM) coupled with
energy-dispersive X-ray spectroscopy (EDS). The results demonstrated
that the optimal combination of potassium titanate fibres and metal
sulphide lubricants significantly influences wear resistance and
friction stability, with varying degrees of primary and secondary
plateau formation observed. This comprehensive characterisation provides
valuable insights into the material's behaviour under operational
conditions, guiding the development of advanced brake friction
composites.
Keywords: brake pad, metal sulphides, KT fibre, SAE J661, IS 2742.
Received: 16-07-2024, Revised: 20-09-2024, Accepted: 23-09-2024
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) license, which allows users to distribute, remix, adapt,
and build upon the material in any medium or format for non-commercial purposes only, and only so long as attribution is given to the creator.
2 Dr. Mahalingam College of Engineering and Technology, Pollachi, India
3 Vallurupalli Nageswara Rao Vignana Jyothi Institute of Engineering and Technology, Hyderabad, India
Abstract: In a brake system, brake friction composites are essential for converting kinetic energy into frictional heat. An optimal brake friction composite should ensure a stable coefficient of friction under extreme operational conditions. This study examines the tribological performance of brake friction composites incorporating potassium titanate fibres and metal sulphide lubricants in standard brake pad formulation. Brake friction composites were engineered by varying the potassium titanate fibre content from 10 to 30 %, while the lubricant mixture (comprising graphite, MoS2, Bi2S3 and Sb2O3) was proportionally adjusted from 27 to 7 %, with the filler and binder concentrations held constant throughout the formulation. The phenolic resin-based composites were characterised for their physical, chemical and mechanical properties in accordance with the IS 2742 (Part 4) standard. The tribological performance of the fabricated composites was evaluated using a rotating drum setup, following the SAE J661 procedure. The worn surfaces of the samples were analysed to identify wear mechanisms utilising scanning electron microscopy (SEM) coupled with energy-dispersive X-ray spectroscopy (EDS). The results demonstrated that the optimal combination of potassium titanate fibres and metal sulphide lubricants significantly influences wear resistance and friction stability, with varying degrees of primary and secondary plateau formation observed. This comprehensive characterisation provides valuable insights into the material's behaviour under operational conditions, guiding the development of advanced brake friction composites.
Keywords: brake pad, metal sulphides, KT fibre, SAE J661, IS 2742.
Received: 16-07-2024, Revised: 20-09-2024, Accepted: 23-09-2024
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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) license, which allows users to distribute, remix, adapt, and build upon the material in any medium or format for non-commercial purposes only, and only so long as attribution is given to the creator.