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Wear behavior of micro-coined steel surfaces under mixed lubrication
Department of Material Science and Engineering, Institute of Functional Materials, Saarland University, Saarbruecken, Germany.
Department of Material Science and Engineering, Institute of Functional Materials, Saarland University, Saarbruecken, Germany.ORCID iD: 0000-0002-9723-2881
Institute of Metal Forming, RWTH Aachen University, Aachen, Germany.
Institute of Metal Forming, RWTH Aachen University, Aachen, Germany.
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2017 (English)In: Industrial Lubrication and Tribology, ISSN 0036-8792, E-ISSN 1758-5775, Vol. 69, no 6, p. 1033-1039Article in journal (Refereed) Published
Abstract [en]

Purpose - The purpose of this study is to investigate the influence of hemispherical structures fabricated by hot micro-coining on the resulting wear performance. Hemispherical structures with different area densities (20 and 30 per cent), depths (50 and 100 mu m) and diameters (100 and 200 m) were fabricated by hot micro-coining on stainless steel samples.

Design/methodology/approach - The wear performance of these samples was studied using a ball-on-disk tribometer in rotational sliding mode using a normal load of 30 N and a fixed sliding velocity of 2 cm/s. Two different poly-(alpha)-olefin (PAO) oils without any additive having a kinematic viscosity of 4 and 40 cSt, were used to study the influence of the oil viscosity on the wear behavior.

Findings - Concerning the polished reference, an enlarged wear volume with an increase in the cycle number and the oil viscosity was observed. In the case of the micro-coined surfaces, all samples demonstrate a pronounced reduction in the wear volume (up to a factor of 100 for PAO 40) compared to the polished reference irrespective of the oil viscosity used.

Originality/value - This study details new research work studying the wear behavior of hot micro-coined surfaces.

Place, publisher, year, edition, pages
Germany: Emerald Group Publishing Limited, 2017. Vol. 69, no 6, p. 1033-1039
National Category
Other Civil Engineering
Research subject
Operation and Maintenance
Identifiers
URN: urn:nbn:se:ltu:diva-60164DOI: 10.1108/ILT-11-2015-0167ISI: 000417510200025Scopus ID: 2-s2.0-85038571271OAI: oai:DiVA.org:ltu-60164DiVA, id: diva2:1044859
Available from: 2016-11-07 Created: 2016-11-07 Last updated: 2018-04-18Bibliographically approved

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Khan, Saad Ahmed

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