SAE Technical Paper Series 2014
DOI: 10.4271/2014-01-2501
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Optimisation of Alumina Coated Lightweight Brake Rotor

Abstract: Aluminium alloys have been used extensively in the automotive industry to reduce the weight of a vehicle and improve fuel consumption which in turn leads to a reduction in engine emissions. The main aim of the current study is to replace the conventional cast iron rotor material with a lightweight alternative such as coated aluminium alloy. The main challenge has been to meet both the cost and functional demands of modern mass-produced automotive braking systems. A sensitivity analysis based on the Taguchi app… Show more

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Cited by 7 publications
(1 citation statement)
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“…Although reports of high average friction coefficients exist, in many cases, the values measured for PEO coatings under dry sliding conditions range from 0.4 to 0.6 against various counterfaces [10,13,14,15], with the authors suggesting using these coatings on Al alloys in applications where weight saving is essential. Brake rotors with PEO coatings obtained from alkaline electrolytes provided satisfactory thermal stability, but a relatively low (0.25–0.3) coefficient of friction against organic-based friction materials (LowMet) [16,17]. Some reports quote friction coefficients as high as 0.8, but these values are usually observed in the beginning of the test, and subsequently drop to 0.5 [18], whereas in others, the sliding distances appear too short to accurately estimate whether the high values of the friction coefficient were able to remain in the long run [19,20].…”
Section: Introductionmentioning
confidence: 99%
“…Although reports of high average friction coefficients exist, in many cases, the values measured for PEO coatings under dry sliding conditions range from 0.4 to 0.6 against various counterfaces [10,13,14,15], with the authors suggesting using these coatings on Al alloys in applications where weight saving is essential. Brake rotors with PEO coatings obtained from alkaline electrolytes provided satisfactory thermal stability, but a relatively low (0.25–0.3) coefficient of friction against organic-based friction materials (LowMet) [16,17]. Some reports quote friction coefficients as high as 0.8, but these values are usually observed in the beginning of the test, and subsequently drop to 0.5 [18], whereas in others, the sliding distances appear too short to accurately estimate whether the high values of the friction coefficient were able to remain in the long run [19,20].…”
Section: Introductionmentioning
confidence: 99%