Wear behaviour of cast aluminium silicon (Al-Si) alloy in Dot 4 brake fluid

Olawale O. Ajibola, Sunday Aribo, Oladeji O. Ige, Ojo J. Akinribide, Samuel O. Akinwamide, Peter A. Olubambi

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)


The frictional sliding behaviour of cast Al-Si alloy was investigated with and without DOT 4 hydraulic brake fluid lubrication/environments. Cast Al-Si specimen was produced from wrought alloy and the specimen surface was metallurgically prepared. The as-cast product was characterized with aid of micro-hardness tester, the chemical composition was analysed by X-ray fluorescence (XRF), while X-ray diffraction (XRD) was used to identify phases present, microstructures and surface examinations were done on a high resolution metallurgical Optical Microscope. The properties of the polished and worn sample surfaces were examined by Scanning electron microscope (SEM) equipped with Energy dispersive X-ray (EDS) facilities. A 6mm diameter alumina ball under varying normal loads (3-10 N) was rubbed against the surface of the cast Al-Si coupon specimen. The dry and wet sliding wear behaviour was assessed based on the CoF-sliding time behaviour. From the results, the average CoF values of 0.9064 for dry and 0.2038 for wet contacts were obtained. Comparatively, 1.03E-06 and 4.21E-07 minimum wear intensities; and 467290 and 132170 wear resistances were obtained for dry and wet contacts respectively. Behaviour of cast Al-Si in DOT4 were compared with its performance in DOT3 regarding the hydraulic brake system application.

Original languageEnglish
Article number012012
JournalIOP Conference Series: Materials Science and Engineering
Issue number1
Publication statusPublished - 8 Oct 2019
Event2019 4th International Conference on Energy Materials and Applications, ICEMA 2019 - Beijing, China
Duration: 11 May 201913 May 2019

ASJC Scopus subject areas

  • General Materials Science
  • General Engineering


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