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Plasma deposition of constrained layer damping coatings

Rongong, J.A., Goruppa, A.A., Buravalla, V.R., Tomlinson, G.R. and Jones, F.R. (2004) Plasma deposition of constrained layer damping coatings. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 218 (7). pp. 669-680. ISSN 0954-4062

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Abstract

Plasma techniques are used to generate constrained layer damping (CLD) coatings on metallic substrates. The process involves the deposition of relatively thick, hard ceramic layers on to soft polymeric damping materials while maintaining the integrity of both layers. Reactive plasma sputter-deposition from an aluminium alloy target is used to deposit alumina layers, with Young's modulus in the range 77-220GPa and thickness up to 335 μ, on top of a silicone film. This methodology is also used to deposit a 40 μ alumina layer on a conventional viscoelastic damping film to produce an integral damping coating. Plasma CLD systems are shown to give at least 50 per cent more damping than equivalent metal-foil-based treatments. Numerical methods for rapid prediction of the performance of such coatings are discussed and validated by comparison with experimental results.

Item Type: Article
Copyright, Publisher and Additional Information: © IMechE 2008. Uploaded with permission from the publisher and in accordance with the publisher's self-archiving policy.
Keywords: Constrained layer damping Layered damping coating Plasma deposition Alumina Ceramic materials Elastic moduli Metal foil Numerical analysis Plasmas Viscoelasticity Constrained layer damping (CLD) Functional polymers coating corrosion resistance damping deposition plasma treatment
Institution: The University of Sheffield
Academic Units: The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Mechanical Engineering (Sheffield)
The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Materials Science and Engineering (Sheffield)
Depositing User: Mr Christopher Hardwick
Date Deposited: 02 Nov 2009 17:50
Last Modified: 15 Sep 2014 01:35
Published Version: http://dx.doi.org/10.1243/0954406041319581
Status: Published
Publisher: Professional Engineering Publishing
Refereed: Yes
Identification Number: 10.1243/0954406041319581
URI: http://eprints.whiterose.ac.uk/id/eprint/9212

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