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Role of various influencing parameters on high temperature fretting behaviour of different tribopairs in liquid lead
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.ORCID iD: 0000-0002-5593-1908
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.ORCID iD: 0000-0003-3123-0303
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.ORCID iD: 0000-0003-1454-1118
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.ORCID iD: 0000-0003-1162-4671
2024 (English)In: Nuclear Materials and Energy, E-ISSN 2352-1791, Vol. 40, article id 101699Article in journal (Refereed) Published
Abstract [en]

The increasing interest in liquid metal cooled nuclear reactors provides technical and scientific challenges such as the understanding, prevention, and prediction of the degradation of materials in liquid lead. Critical components include the fuel rods, heat exchanger tubes, and pump impellers. These functional elements are exposed to mechanical loading (up to 40 MPa), high temperatures (450–550 °C), and fluid-induced vibrations (up to 25 Hz). Under such conditions, fretting wear occurs between e.g., the spacer wire and the outer surface of the fuel or heat exchanger tubes. This work is aimed to establish a laboratory-scale fretting wear test setup and develop test methodology to enable systematic material characterisation in liquid metal environments. The results obtained by using the described methodology indicate that adhesive wear is the dominant degradation mechanism, and 316L stainless steel shows a higher coefficient of friction but a lower wear volume/tribolayer volume compared to 100Cr6 bearing steel. These results are in agreement with those reported in open literature and demonstrates the suitability of the presented method for conducting fretting tests and analysis for various materials and contact configurations in liquid lead environment.

Place, publisher, year, edition, pages
Elsevier Ltd , 2024. Vol. 40, article id 101699
Keywords [en]
Fretting, Friction, High temperature, Liquid lead, Wear
National Category
Tribology (Interacting Surfaces including Friction, Lubrication and Wear) Manufacturing, Surface and Joining Technology
Research subject
Machine Elements
Identifiers
URN: urn:nbn:se:ltu:diva-108318DOI: 10.1016/j.nme.2024.101699ISI: 001262653200001Scopus ID: 2-s2.0-85197067302OAI: oai:DiVA.org:ltu-108318DiVA, id: diva2:1883198
Funder
Swedish Foundation for Strategic Research, ARC19-0043Luleå University of Technology
Note

Validerad;2024;Nivå 2;2024-07-09 (joosat);

Full text: CC BY License

Available from: 2024-07-09 Created: 2024-07-09 Last updated: 2024-11-20Bibliographically approved

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Kolbas, DariaPelcastre, LeonardoPrakash, BrahamHardell, Jens

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Tribology (Interacting Surfaces including Friction, Lubrication and Wear)Manufacturing, Surface and Joining Technology

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