The dual role of metal sulfides as lubricant and abrasive: an interface study in friction composite

K, Sathickbasha; Selvakumar, A S; Balaji, S.; Rajan, Bharat

doi:10.1088/2053-1591/aafd5a

Cited by 40 publications

(21 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As shown in the figures 3(a) and (b) the μ reaches stabilization after few cycles which is due to the establishment of real contact with the mating even though the burnish cycle was performed before the testing. This behavior is tandem with the literature [36].…”

Section: Influence Of Load On the Friction Performance Of Brake Padssupporting

confidence: 89%

“…The μ of the different speeds are given in figure 5. As the sliding speed increases, the μ of the brake pads decreases mainly due to the increase in kinetic energy, which causes increase in the temperature at the interface leading to resin softening further, enabling debonding of fiber and some powdery ingredients forming third bodies [36]. As speed increases, the asperities and mating surface contact get reduced leading to reduction in μ.…”

Section: Influence Of Speed On the Friction Performance Of Brake Padsmentioning

confidence: 99%

See 1 more Smart Citation

Influence of benzoyl chloride treatment on the tribological characteristics of Cyperus pangorei fibers based non-asbestos brake friction composites

Babu

2019

Mater. Res. Express

View full text Add to dashboard Cite

Natural fibers are widely used in the various lightweight and medium load applications due to their vital advantages. Cyperus pangorei is abundantly found on the river banks. The current study deals with the usage of Cyperus pangorei fibers that were retted using a manual retting process in the brake pad formulation. The fibers retted were treated with benzoyl chloride to enhance adhesion characteristics. The benzoyl chloride treated and untreated Cyperus pangorei fibers were used in the development of brake pads with other ingredients constant as per industrial practice. The developed brake pads were analyzed for its physical, chemical, thermal and mechanical properties as per industrial standards. The tribological performance of the brake pads was analyzed using a pin-on-disc tribometer as per ASTM G-99-05. It was proved that benzoyl chloride treated Cyperus pangorei fibers based brake pads showed excellent performance characteristics compared to untreated one due to better bonding with matrix causing good contact plateaus formations as confirmed from Scanning Electron Microscopy.

show abstract

Section: Influence Of Load On the Friction Performance Of Brake Padssupporting

confidence: 89%

Section: Influence Of Speed On the Friction Performance Of Brake Padsmentioning

confidence: 99%

Influence of benzoyl chloride treatment on the tribological characteristics of Cyperus pangorei fibers based non-asbestos brake friction composites

Babu

2019

Mater. Res. Express

View full text Add to dashboard Cite

show abstract

“…The abrasives such as zirconium silicate and the alumina were uniformly present over the secondary tribo layer B of the wear surface. The worn surface is oxidized heavily due to the tribooxidation [30]. The oxidized films are marked as O which are weakening the friction film and increases the wear rate of the composite.…”

Section: Wear Performancementioning

confidence: 99%

Tribological Performance of Brass Powder with Different Copper and Zinc Content in the Brake pad

Ahmed¹,

Mohideen²,

Balaji³

2020

Tribol. Ind.

View full text Add to dashboard Cite

Metallic fillers play a significant role in the brake friction material formulation due to its high thermal conductivity, tribo-load bearing ability against the rotor, friction stability and wear resistance. Brass powder is widely used in the formulation because of good thermal conductivity, fade and wear resistance. The commercial brass composed of 70 wt.% copper and 30 wt.% zinc. In this work, the brass powders with identical morphology and different weight percentage (wt.%) copper and zinc content is evaluated for its tribological and physico-mechanical performance in the brake friction material formulation. Three set of brake friction pads were fabricated with three different brass powders of varying copper and zinc content, 60% Cu-40% Zn, 70% Cu-30% Zn, and 80% Cu-20% Zn, respectively. The objectives of this study were to find the physico-mechanical properties based on Indian Standard IS 2742 and tribological performance of the brake pads based on ASTM G99-95 using pin-on-disc tribometer. The wear mechanism of the brake composite of worn surface was studied using scanning electron microscope. The brake friction composites were ranked based on extension evaluation method by considering the tribo-mechanical performance parameters. It is observed that brass with 80% Cu and 20% Zn proved to be the best performer based on the weighted average dependent degree of extension evaluation.

show abstract

“…The solid lubricants such as Sb2S3, SnS2, FeS2, WS2, MoS2 and graphite influence the abundant needs for secure and safe braking performance [10]. Metal sulfides are used as an individual lubricant and also as a lubricant mix in the formulation of friction material [11][12][13][14]. Among those solid lubricants, graphite (both natural and synthetic) are gradually used in brake lining due to its high anisotropic property, better lubricity at the elevated temperatures [15].…”

Section: Introductionmentioning

confidence: 99%

Investigation of The Effect of Solid Lubricant Particle Sizes on Friction and Wear Properties in Friction Composites: An Experimental Case Study with Graphite

Sugözü

2021

International Journal of Automotive Science and Technology

View full text Add to dashboard Cite

Friction composites consist of many materials with various properties. Solid lubricant is one of these materials. The task of the solid lubricant in the compo-site is to protect the counter surfaces against wear and to reduce noise and vibra-tion. Typical solid lubricants used in the friction composite are graphite, antimo-ny trisulfide, molybdenum disulfide, copper sulfide, etc. The selection suitable solid lubricants for better braking performance is an important issue, as solid lubricants may decompose at high temperatures, leading to undesirable results. The particle size of the solid lubricant used is at least as important as itself. In this study, the effect of micro and nanoparticle-sized graphite on friction and wear behavior of friction composites was investigated experimentally. Two brake lining were prepared containing 10 wt.% nanographite and micrographite, were produced by powder metallurgy technique. The brake lining samples have been tested under Friction Assessment and Screening Test (FAST). The frictional and physical properties of the produced samples were determined by appropriate tests. According to the test results obtained, micro and nanoparticle size were compared in many respects and the most ideal size was determined for graphite.

show abstract

The dual role of metal sulfides as lubricant and abrasive: an interface study in friction composite

Cited by 40 publications

References 31 publications

Influence of benzoyl chloride treatment on the tribological characteristics of Cyperus pangorei fibers based non-asbestos brake friction composites

Influence of benzoyl chloride treatment on the tribological characteristics of Cyperus pangorei fibers based non-asbestos brake friction composites

Tribological Performance of Brass Powder with Different Copper and Zinc Content in the Brake pad

Investigation of The Effect of Solid Lubricant Particle Sizes on Friction and Wear Properties in Friction Composites: An Experimental Case Study with Graphite

Contact Info

Product

Resources

About