کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
615426 881445 2011 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Tribological performance of thin overlays for journal bearings
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Tribological performance of thin overlays for journal bearings
چکیده انگلیسی

This paper describes the analysis of overlay materials used in journal bearings. We conducted model tests using ring-on-disc test configuration and component tests on bearing test rigs. Appropriate test strategies were designed for investigating the running-in, stable operating, emergency running and break-down behaviour. We investigated three different types of overlays: PbSn18Cu2 galvanic, polymeric overlay (PAI matrix with MoS2-lamellae and graphite), PVD-coated AlSn20Cu-Sputter. Main results are: PbSn18Cu2 improves emergency running conditions. Polymeric overlay shows high need for running-in, where a particle structured surface is formed. AlSn20Cu-Sputter exhibits lowest wear and highest load capacity in component tests, but requires optimum running conditions.

Research Highlights
► We tested journal bearing overlays and employed damage analysis techniques.
► Designed methodology is able to resolve tribological processes in high resolution.
► Electroplated Pb-based overlay improves emergency running conditions.
► Polymeric overlay with MoS2-lamellae forms particle structured surface.
► PVD overlay exhibits lowest wear and highest load carrying capacity.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tribology International - Volume 44, Issue 11, October 2011, Pages 1271–1280
نویسندگان
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