Yazar "Kus, Husamettin" seçeneğine göre listele

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    Effect of Glass Powder on the Friction Performance of Automotive Brake Lining Materials
    (Int Inst Science Sintering (I I S S), 2023) Kus, Husamettin; Altiparmak, Duran
    In this study, bronze-based brake linings containing 0-8 wt% glass powder were manufactured by a hot pressing process and tribological properties of produced samples were investigated using a Chase-type friction tester. The hardness and density of the samples were also determined. The microstructures and friction surfaces of the samples were examined using scanning electron microscopy (SEM). As a result, it was dermined that the sample that was reinforced with 8 wt% glass powder has exhibited the best wear behavior. Furthermore, a reduction in the friction coefficient of all the samples with increasing friction surface temperature was observed. The results have showed that friction coefficient stability of the brake lining samples could be improved with the increasing content of glass powder.
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    Öğe
    Influence of B4C addition on the tribological properties of bronze matrix brake pad materials
    (De Gruyter Poland Sp Z O O, 2025) Kus, Husamettin
    In this study, the effects of B4C particle addition on the microstructural, mechanical, and tribological properties of bronze matrix brake pad materials were analyzed. To this end, bronze matrix brake pads reinforced with different proportions (0, 3, 6, 9, and 12 wt%) of B4C particles were fabricated via hot pressing at 800 degrees C and 40 MPa for 5 min. The hardness, density, and transverse rupture strength (TRS) were measured and friction-wear tests were performed to evaluate the effectiveness of adding B4C. The results revealed that the hardness increased with increasing B4C content, whereas the density slightly decreased. The TRSs of the B4C-reinforced specimens exceeded that of the non-reinforced material. Furthermore, the friction stability, average friction coefficient, and wear resistance, which are crucial quality parameters of the brake pad material, increased upon adding >3 wt% B4C to the specimen compared with those of the non-reinforced specimen. After the wear test, the worn surfaces of the specimens were examined via scanning electron microscopy, X-ray diffraction, and a 3D optical profilometer to identify the wear mechanisms involved during friction.
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    Öğe
    Red Mud Ratio Effects on the Tribological Performance of Fly-Ash-Reinforced Bronze Matrix Brake Pad Material
    (Springer, 2024) Kus, Husamettin; Avcu, Adem; Sugozu, Ilker
    Different amounts of red mud (0%, 2%, 4%, 6%, and 8%) were added to bronze matrix brake pad material reinforced with 12% fly ash and then hot-pressed at 800 degrees C and 40 MPa for 5 min. Wear-friction tests were conducted to determine the friction coefficient and specific wear rate, which are important indicators for evaluating the performance of brake pad samples. For all samples, the hardness and density were determined, fractured surfaces and microstructures were examined, and transverse rupture strength (TRS) was calculated using a three-point bending test. The hardness values of the samples increased with increasing red mud content, and their density values slightly decreased. TRS values of the samples increased with up to 4% red mud addition, but decreased when above 4%, and the friction coefficient of the brake pad samples decreased with an increase in red mud content. Moreover, all samples containing red mud, except the sample containing 2% red mud, showed a lower specific wear rate than the bronze matrix brake pad material reinforced with 12% fly ash. The worn surfaces of the specimens were also examined using scanning electron microscopy (SEM) and a 3D optical profilometer.