Friction characteristics of brake pads with aramid fiber and acrylic fiber

Park, Jung Hwan; Chung, Jin Oh; Kim, Hyang Rae

doi:10.1108/00368791011025638

Cited by 29 publications

(10 citation statements)

References 7 publications

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“…They strongly affect various brake performances such as friction stability and wear resistance. 54,55 Zn and ZnO significantly influence the thermal conductivity within the TBL. 52 Investigations on TBL dynamics.…”

Section: Microstructural Investigations Of the Brake Pad Materialsmentioning

confidence: 99%

Coaxial laser cladding of cobalt-base alloy Stellite^TM 6 on gray cast iron/investigations on friction, wear versus commercial brake pad, and corrosion characteristics

Kiehl

Scheid

Graf

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part D:

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Environmental legislation and the electrification of vehicles place increased requirements on brake disks in terms of wear and corrosion resistance. Departing from a preliminary study, the present investigation examined the friction and wear behavior as well as the corrosion properties of Stellite™ 6 coatings on gray cast iron, which were deposited by laser cladding. The friction and wear experiments were conducted on a pin-on-disk tribometer at contact pressures of 1.0 and 2.0 MPa as well as rotation speeds of 0.2, 0.4, 0.6, 0.8, and 2.0 m/s. The pins are manufactured from an automotive semi-metallic brake pad. The friction behavior of gray cast iron and Stellite™ 6 coatings is similar under changing test conditions. The tribological behavior is strongly influenced by the microstructural and mechanical properties of the coatings and the brake pad material. A third body layer of contact patches is formed on Stellite™ 6, which mainly consists of brake pad components. The transformation of the Co-matrix (fcc → hcp), subsurface fatigue, and tribo-oxidation are the main wear mechanism for Stellite™ 6. The electrochemical characteristics were analyzed by potentiodynamic polarization, and the corrosion rate was determined with Tafel plots in 3.5% NaCl solution, respectively. Compared to gray cast iron, Stellite™ 6 coatings have a pronounced corrosion resistance due to the formation of a protective passive layer of Co and Cr oxides. This corrosion resistance is mainly influenced by the microstructure. The corrosion rate of the coatings increases in parallel with the Fe dilution.

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Section: Microstructural Investigations Of the Brake Pad Materialsmentioning

confidence: 99%

Coaxial laser cladding of cobalt-base alloy Stellite^TM 6 on gray cast iron/investigations on friction, wear versus commercial brake pad, and corrosion characteristics

Kiehl

Scheid

Graf

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part D:

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“…Due to this, the fillers either liquify or sticks together. Therefore, they should have the ease to perform this [68][69][70].…”

Section: Fillers In Composite Friction Materialsmentioning

confidence: 99%

A Review on Non-Asbestos Friction Materials: Material Composition and Manufacturing

Shinde

Mistry

Jhavar

et al. 2018

AMR

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The peculiar feature of friction materials to absorb the kinetic energy of rotating wheels of an automobile to control the speed makes them remarkable in automobile field. The regulation of speed cannot be achieved with the use of single phase material as a friction material. Consequently, the friction material should be comprised of composite materials which consist of several ingredients. Incidentally, the friction materials were formulated with friction modifier, binders, fillers and reinforcements. Due to its pleasant physical properties, asbestos was being used as a filler. Past few decades, it is found that asbestos causes dangerous cancer to its inhaler, which provides a scope its replacement. Several attempts have been made to find an alternative to the hazardous asbestos. The efforts made by different researchers for the impact of every composition of composite friction material in the field are reviewed and studied for their effect on the properties of friction material. Surface morphological studies of different friction material are compared to interpret the concept of surface wear and its correlation with material properties.

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“…Much research has since been carried out to develop a substitute. The most commonly used reinforcements today are synthetic materials such as carbon fiber and aramid [ 10 , 11 ]. Less often, more exotic materials of natural origin are used.…”

Section: Introductionmentioning

confidence: 99%

Laboratory Tests on the Possibility of Using Flax Fibers as a Plant-Origin Reinforcement Component in Composite Friction Materials for Vehicle Braking Systems

Borawski,

Szpica,

Mieczkowski

2024

Materials

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Braking systems are extremely important in any vehicle. They convert the kinetic energy of motion into thermal energy that is dissipated into the atmosphere. Different vehicle groups have different nominal and maximum speeds and masses, so the amount of thermal energy that needs to be absorbed by the friction pads and then dissipated can vary significantly. Conventional friction materials are composite materials capable of withstanding high temperatures (in the order of 500–600 °C) and high mechanical loads resulting from braking intensity and vehicle weight. In small vehicles traveling at low speeds, where both the amount of thermal energy and its density are limited, the use of slightly weaker friction materials with better ecological properties can be considered. This work proposes a prototype composite friction material using flax fibers as reinforcement instead of the commonly used aramid. A number of samples were prepared and subjected to laboratory tests. The samples were prepared using components of plant origin, specifically flax fibers. This component acted as reinforcement in the composite friction material, replacing aramid commonly used for this purpose. The main tribological characteristics were determined, such as the values of the coefficients of friction and the coefficients of abrasive wear rate. For this purpose, an authorial method using ball-cratering contact was used. The results were analyzed using statistical methods. It was found that the composite material using flax fibers does not differ significantly in its tribological properties from conventional solutions; so, it can be assumed that it can be used in the vehicle’s braking system.

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Friction characteristics of brake pads with aramid fiber and acrylic fiber

Cited by 29 publications

References 7 publications

Coaxial laser cladding of cobalt-base alloy Stellite^TM 6 on gray cast iron/investigations on friction, wear versus commercial brake pad, and corrosion characteristics

Coaxial laser cladding of cobalt-base alloy Stellite^TM 6 on gray cast iron/investigations on friction, wear versus commercial brake pad, and corrosion characteristics

A Review on Non-Asbestos Friction Materials: Material Composition and Manufacturing

Laboratory Tests on the Possibility of Using Flax Fibers as a Plant-Origin Reinforcement Component in Composite Friction Materials for Vehicle Braking Systems

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Friction characteristics of brake pads with aramid fiber and acrylic fiber

Cited by 29 publications

References 7 publications

Coaxial laser cladding of cobalt-base alloy StelliteTM 6 on gray cast iron/investigations on friction, wear versus commercial brake pad, and corrosion characteristics

Coaxial laser cladding of cobalt-base alloy StelliteTM 6 on gray cast iron/investigations on friction, wear versus commercial brake pad, and corrosion characteristics

A Review on Non-Asbestos Friction Materials: Material Composition and Manufacturing

Laboratory Tests on the Possibility of Using Flax Fibers as a Plant-Origin Reinforcement Component in Composite Friction Materials for Vehicle Braking Systems

Contact Info

Product

Resources

About

Coaxial laser cladding of cobalt-base alloy Stellite^TM 6 on gray cast iron/investigations on friction, wear versus commercial brake pad, and corrosion characteristics

Coaxial laser cladding of cobalt-base alloy Stellite^TM 6 on gray cast iron/investigations on friction, wear versus commercial brake pad, and corrosion characteristics