Effect of in-situ tribo-oxide-layer on the non-lubricated tribological behaviours of LM27/SiCp composites

IF 1.6 Q4 MATERIALS SCIENCE, COATINGS & FILMS Tribology - Materials, Surfaces & Interfaces Pub Date : 2021-06-01 DOI:10.1080/17515831.2022.2058797

Pardeep Kumar Nagpal, Suresh Kumar, Ranvir Singh Panwar, J. Sharma, N. Singla, S. Mahla

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引用次数: 2

Abstract

ABSTRACT In this study, the influence of the in-situ tribo-oxide-layer on non-lubricated tribological behaviours of LM27/SiCp composites was studied at different applied loads. For this purpose, LM27/SiCp composites were manufactured by stir casting route with reinforcement of different amounts (3–12 wt.%) and different sizes (fine: 1–20 µm and coarse: 106–125 µm) of SiCp. A comprehensive characterization of the friction and wear mechanisms ranging from mild to severe wear for oxidative and delamination at a contact pressure of 0.125–0.624 MPa was discussed. Results indicate that the friction and wear behaviour is strongly influenced by the morphology and the nature of the oxide scale on the wear track. In-situ formation of oxide layers on the contact region of the specimen supports the self-lubrication which supports better wear performance of LM27/SiCp composites. However, these study portraits that composite with 12wt. % fine size SiCp exhibits better wear performance in comparison to the other developed composites. GRAPHICAL ABSTRACT

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原位氧化摩擦层对LM27/SiCp复合材料非润滑摩擦学行为的影响

摘要在本研究中，研究了原位摩擦氧化物层对LM27/SiCp复合材料在不同外加载荷下非润滑摩擦学行为的影响。为此，LM27/SiCp复合材料是通过搅拌铸造工艺制造的，具有不同数量（3–12 wt.%）和不同尺寸（细：1–20 µm和粗糙：106–125 µm）的SiCp。在0.125–0.624的接触压力下，从轻度到重度的氧化和分层摩擦和磨损机制的综合表征对MPa进行了讨论。结果表明，磨损轨迹上氧化皮的形态和性质对摩擦磨损行为有很大影响。在试样的接触区域原位形成氧化物层支持自润滑，这支持LM27/SiCp复合材料更好的磨损性能。然而，这些研究肖像与12wt.%与其他开发的复合材料相比，细尺寸SiCp表现出更好的磨损性能。图形摘要

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Tribology - Materials, Surfaces & Interfaces MATERIALS SCIENCE, COATINGS & FILMS-

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2.80

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