Zeolite-coated steel fibers for friction materials applications

Abstract

Zeolite-coated steel fiber used for non-asbestos organic type friction material was studied. High silica zeolite silicalite-1, due to its easy preparation procedures was chosen to be deposited onto the steel fibers. This work shows that the friction material incorporated with zeolite-coated steel fibers exhibit higher coefficient of friction values than the friction material with bare steel fibers. Zeolite-coated steel fibers added friction materials maintain a sufficiently high friction coefficient from 0.332 to 0.514 with the brake discs at high temperature from 150 C to 300 C. This kind of friction material with corrosion-resistant property has great potential to be used for vehicle brake pad applications.

Investigation on tribological and corrosion characteristics of oxide-coated steel and mild steel fiber-based brake friction composites

“…The reason for such behaviour in oxide-coated steel is that the oxide coating which prevents exposure to corrosive attacks while the steel fiber is not resistance to corrosion. A similar type of behaviour was also seen in literature when steel was coated with zeolite, in which the coated one didn’t show any abrupt changes while the uncoated one showed more rust because of its poor resistance to corrosion (Chau et al , 2016).…”

“…However, steel fibers suffer from corrosion, particularly when the vehicle is operated near-coastal environment and induces several problems to both mating as well as composite (Chau et al , 2016). Oxide-coated steel (Stilox) are considered a new generation of metallic ingredient that can present a possible challenge to resolve steel fibers problems, justified particularly by its composition which changes in function because of the temperature (Keerthana et al , 2016; Chau et al , 2016). However, there is no research investigating the influence of oxide-coated steel on braking performance in the literature.…”

Conventional and unconventional materials used in the production of brake pads – review

“…Zeolite causes the coefficient of friction to stabilize at 0.4-0.45, and have low sensitivity to temperature changes. Similar results were obtained by Chau et al They performed tests in the temperature range of 150-300 ∘ C. An improvement in the anti-corrosion properties of the friction material containing zeolites has also been noted [206]. Its wear resistance also increases, extending the brake pad's operating life [205].…”

A comparative study of original equipment manufacturer brake pads using tribological testing and hybrid ranking for enhanced decision making and cost effectiveness

“…Regarding shear strengths, all four pads showed values within the expected range of 40-50 kgf/cm², 3 indicating a low risk of delamination of the liner from the back-plate. The hardness, measured on the HRL scale, should be between 80 and 90, 24 and the values for OE3 and OE1 brake pads were found to be harder, potentially leading to rotor damage. In contrast, OE2 and OE4 pads were relatively less hard compared to the other two samples.…”

“…Step-3: Determine the positive ideal solution v i and negative ideal solutions v j from equation (24). Step-4: Calculation of separation measures of each alternative by using equation (25), where s + i , s − i are the positive and negative ideal alternative.…”