A step towards replacing copper in brake-pads by using stainless steel swarf

Mahale, Vishal; Bijwe, Jayashree; Sinha, Sujeet K.

doi:10.1016/j.wear.2019.02.019

Cited by 44 publications

(24 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…And also it is inferred that the hardness increases as porosity decreased. This is as per the literature that higher the specific gravity, higher the hardness which due to close packing leads to the reduction in the porosity [17][18][19]. Figure 6a, b shows the change in specific gravity and hardness as a function of porosity.…”

Section: Physical Mechanical and Thermal Properties Of The Developedsupporting

confidence: 77%

Tribological performance evaluation of fused mullite-reinforced hybrid composite brake pad for defence application

Kumar

Kumaran

Dhanalakshmi

et al. 2019

J Braz. Soc. Mech. Sci. Eng.

View full text Add to dashboard Cite

The current study deals with the replacement of existing sintered bronze brake pad using hybrid composite brake pads for armour vehicle application. In the present work, fused mullite was added in three different weight percentages which was compensated by synthetic barites. The pads were produced by conventional manufacturing procedure. The physical and mechanical properties were measured as per industrial standards. The tribological performance was evaluated using Chase test following IS2742 Part-4 standards. The test results showed that 3 wt% of mullite abrasive in hybrid brake pad formulation produced reduced density, less squeal, less frictional undulations with the minimum wear of 0.887 g for 100 brake applications. Worn surface characteristics were analysed using scanning electron microscopy.

show abstract

Section: Physical Mechanical and Thermal Properties Of The Developedsupporting

confidence: 77%

Tribological performance evaluation of fused mullite-reinforced hybrid composite brake pad for defence application

Kumar

Kumaran

Dhanalakshmi

et al. 2019

J Braz. Soc. Mech. Sci. Eng.

View full text Add to dashboard Cite

show abstract

“…5) and form highly compacted and smooth friction layers, as revealed in previous investigations [41,49]. Therefore, the friction coefficient was low because of the low adhesion forces that developed between the barite-rich friction layer and the cermet counterface, owing to the high chemical inertness of barite [50].…”

Section: Discussionmentioning

confidence: 71%

Pin-on-disc study of dry sliding behavior of Co-free HVOF-coated disc tested against different friction materials

et al. 2021

View full text Add to dashboard Cite

The dry sliding behavior of three commercial friction materials (codenamed FM1, FM2, and FM3) tested against a Co-free cermet coating produced by high-velocity oxy-fuel (HVOF) on gray cast-iron discs is investigated. FM1 is a conventional low-metallic friction material, FM2 is developed for using against HVOF-coated discs, and FM3 is a Cu-free friction material with a low content of abrasives and a relatively high concentration of steel fibers. For the tribological evaluation, they are tested on a pin-on-disc (PoD) test rig against Co-free HVOF-coated discs, with particular attention to the running-in stage, which is fundamental for the establishment of a friction layer between the two mating surfaces, i.e., the pin and disc. The PoD tests are performed at room temperature (RT) and a high temperature (HT) of 300 °C. At RT, all materials exhibit a long running-in stage. At HT, no running-in is observed in FM1 and FM2, whereas a shorter running-in period, with respect to the RT case, is observed in FM3 followed by the attainment of a comparatively high coefficient of friction. At RT, the pin wear is mild in all cases but severe at HT. FM3 shows the lowest wear rate at both temperatures. Moreover, the coated disc shows no wear when sliding against the FM3 friction material. All the results are interpreted considering the microstructural characteristics of the friction layers formed on the sliding surfaces. The findings of the present study provide insights into reducing wear in braking system components and hence reducing environmental particulate matter emissions from their wear, through the use of disc coatings.

show abstract

“…One more type of brake-pad was formulated without alumina particles and increasing barite, inert filler by 2%. The brake-pads were developed as per procedure reported in the earlier literature [18,19]. Homogeneous mixture (around 65 g) was cold pressed in the form of Alto™ Car brake-pads and kept in oven ≈ 70−80 °C for 30 minutes to remove moisture to avoid cracks during hot compression moulding.…”

Section: Design and Development Of Brake-padsmentioning

confidence: 99%

Functionalization of alumina particles to improve the performance of eco-friendly brake-pads

2021

Self Cite

View full text Add to dashboard Cite

Abrasives, such as oxides of alumina (Al), silica (Si), zirconia (Zr), chromium (Cr) etc., are added to raise the friction level and also to remove the glaze on the disc so that surface will be rejuvenated continuously during braking and will contribute to maintain the desired friction level. However, these inorganic particles have less adhesion with the resin/binder and hence are easily dug out during wearing process contributing to higher wear. If efforts are made to enhance the filler-matrix adhesion, not only the wear of friction material (FM) should reduce, the particles may stay for a longer time on the tribo-surface of the pads to contribute fully towards controlling the coefficient of friction (μ). In the present study, alumina particles were selected for siloxane treatment to improve the filler-matrix adhesion. Two types of eco-friendly (free from asbestos and Cu) brake-pads were developed using alumina as a theme ingredient (treated and untreated) keeping all the parent formulation identical. An additional type of brake-pads without alumina particles was also developed to observe the effect of abrasive particles on the tribo-performance. The performance properties (physical, mechanical, and tribological) of brake-pads were compared when evaluated in identical conditions. The tribo-testing was done on full-scale brake inertia dynamometer following the procedure in Japanese automobile standard (JASO C 406). It was observed that siloxane treatment affected both friction and wear of brake-pads in a beneficial way. Wear resistance got increased 35% for siloxane treated pads. Worn surfaces were analysed using scanning electron microscopy (SEM) and energy dispersive X-ray (EDAX) technique.

show abstract

A step towards replacing copper in brake-pads by using stainless steel swarf

Cited by 44 publications

References 27 publications

Tribological performance evaluation of fused mullite-reinforced hybrid composite brake pad for defence application

Tribological performance evaluation of fused mullite-reinforced hybrid composite brake pad for defence application

Pin-on-disc study of dry sliding behavior of Co-free HVOF-coated disc tested against different friction materials

Functionalization of alumina particles to improve the performance of eco-friendly brake-pads

Contact Info

Product

Resources

About