Wear-resistant aluminum–boron–carbide cermets for automotive brake applications

Chapman, T.; Niesz, Dale E.; Fox, R. T.; Fawcett, T. G.

doi:10.1016/s0043-1648(99)00259-8

Cited by 81 publications

(38 citation statements)

References 7 publications

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“…Aluminum/boron carbide composites have shown promising friction and wear behavior as a candidate disc material using the Chase test [Chapman et al (1999); see section 5.2 for a description of the Chase machine]. Specimens were produced by reactive metal infiltration.…”

Section: Cast Ironmentioning

confidence: 99%

Compositions, Functions, and Testing of Friction Brake Materials and Their Additives

Blau¹

2001

200

149

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PrefaceThis report was prepared as an information resource for the development of advanced brake materials for heavy vehicles. This research is sponsored by the U.S. Department of Energy, Office of Transportation Technologies. It is part of an initiative aimed at reducing the running resistance while improving the safety of on-highway heavy trucks. Selected information on aircraft brake materials was included for comparison purposes. Data in this report have been compiled from a variety of commercial and non-commercial sources. The validity of the data in this compilation is the responsibility of the originators, and information contained herein should be used mainly as a guide and for the sake of comparison. Normally, IS0 units are used in ORNL reports, but in this case, the units have been ,reported in the measurement systems that were used in the original references. They reflect the diversity in current preferences for units of measure in the commercial brakes industry.

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Section: Cast Ironmentioning

confidence: 99%

Compositions, Functions, and Testing of Friction Brake Materials and Their Additives

Blau¹

2001

200

149

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“…These results are consistent with the earlier works. [32][33][34][35] As can be seen from Table 3, the friction coefficients achieved for samples UCH-20 and UCH-16 are approximately 0.45, which is considered to be very good when compared to the coefficients of friction achieved with the current brake pads. The UC-4 sample has the highest density and hardness among the untreated samples.…”

Section: Wear Behaviourmentioning

confidence: 82%

Friction and wear behaviour of ulexite and cashew in automotive brake pads

Sugözü¹,

Mutlu²,

Keskin³

2015

Mater. Tehnol.

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In the experimental studies, ulexite and cashew were investigated as new materials in brake pads. A newly formulated brake-pad material with five different ingredients was produced using ulexite. Tribological properties of the friction materials were obtained using the brake-test equipment. The friction and wear characteristics of the samples in contact with a disk made of cast iron were studied. The change in the friction coefficient, the temperature of the friction surface and the amount of the wear were examined to assess the performance of these samples. In addition, microstructural characterizations of the braking pads were carried out using scanning electron microscopy (SEM). The results showed that the friction materials containing ulexite and cashew have an important effect on the friction stability and fade resistance. The strategy proposed in this paper can be considered for the alternative friction materials where ulexite and cashew can be used as friction materials in the brake pads. Keywords: brake pad, composite materials, friction coefficient, ulexite, cashew Preiskovan je bil vpliv uleksita in prahu iz indijskega oreha kot novega materiala v zavornih oblogah. Novo zasnovani material za zavorne obloge iz petih sestavin je bil izdelan z uporabo uleksita. Tribolo{ke lastnosti tornega materiala so bile preizku{ene na napravi za preizkus zavor. Preu~evano je bilo trenje in zna~ilnosti obrabe vzorcev v stiku z diskom iz sive litine. Za oceno zmogljivosti vzorcev so bile preiskane spremembe koeficienta trenja, izmerjena temperatura na povr{ini stika in koli~ina obrabe. Z vrsti~nim elektronskim mikroskopom (SEM) so bile dodatno preiskane mikrostrukturne zna~ilnosti zavornih oblog. Rezultati so pokazali, da imajo torni materiali, ki vsebujejo uleksit in prah indijskega oreha, pomemben vpliv na stabilnost trenja in odpornost proti odpovedi zavor pri vi{jih temperaturah. V tem~lanku predlagana usmeritev se lahko upo{teva kot nadomestni torni material za zavorne obloge na osnovi uleksita in prahu iz indijskega oreha. Klju~ne besede: zavorne obloge, kompozitni material, koeficient trenja, uleksit, prah iz indijskega oreha

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“…The formation of MgAl 2 O 4 as defined in Eq. [4] occurs at the nanometer scale, and those MgAl 2 O 4 nanoparticles touching with SiC kept crystallographic ORs with SiC, [13] indicating that they nucleated and grew on the SiC surface. However, it was observed that the MgAl 2 O 4 nanoparticles do not have definite ORs with the Al matrix, [13] which is similar to the present case of B 4 C and its reactant particles.…”

Section: Comparison With the Sic/al Systemmentioning

confidence: 99%

“…[1,2] So far, the B 4 C/Al MMCs have been successfully applied for abrasives, nozzles, neutron absorbents, ballistic armor plates, automotive breaks, and other applications requiring high strength, high modulus, and high abrasive properties. [2][3][4][5][6] To fabricate the MMC with a high-volume fraction of reinforcements, the pressureless infiltration technique, as developed by Aghajanian et al, [7,8] is a simple and costeffective approach for either discontinuous or continuous reinforcements. A technical prerequisite to apply this method is to achieve good wetting between the filler and the molten alloy.…”

Section: Introductionmentioning

confidence: 99%

Interfacial Microstructure in a B4C/Al Composite Fabricated by Pressureless Infiltration

Luo

Song

Zhang

et al. 2011

Metall Mater Trans A

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In this work, B 4 C particulate-reinforced Al composite was fabricated by a pressureless infiltration technique, and its interfacial microstructure was studied in detail by X-ray diffraction as well as by scanning and transmission electron microscopy. The B 4 C phase was unstable in Al melt during the infiltration process, forming AlB 10 -type AlB 24 C 4 or Al 2.1 B 51 C 8 as a major reactant phase. The Al matrix was large grains (over 10 lm), which had no definite orientation relationships (ORs) with the randomly orientated B 4 C or its reactant particles, except for possible nucleation sites with f011g B 4 C almost parallel to {111} Al at a deviation angle of 1.5 deg. Both B 4 C-Al and reactant-Al interfaces are semicoherent and free of other phases. A comparison was made with the SiC/Al composite fabricated similarly by the pressureless infiltration. It was suggested that the lack of ORs between the Al matrix and reinforced particles, except for possible nucleation sites, is the common feature of the composites prepared by the infiltration method.

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Wear-resistant aluminum–boron–carbide cermets for automotive brake applications

Cited by 81 publications

References 7 publications

Compositions, Functions, and Testing of Friction Brake Materials and Their Additives

Compositions, Functions, and Testing of Friction Brake Materials and Their Additives

Friction and wear behaviour of ulexite and cashew in automotive brake pads

Interfacial Microstructure in a B4C/Al Composite Fabricated by Pressureless Infiltration

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