Low temperature plasma surface modification of stainless steels for ice sliding applications

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http://eprints.org/relation/isVersionOf http://etheses.bham.ac.uk/id/document/20687 http://eprints.org/relation/isVolatileVersionOf http://etheses.bham.ac.uk/id/document/20687 http://eprints.org/relation/isIndexCodesVersionOf http://etheses.bham.ac.uk/id/document/20687 archive 4031 disk0/00/00/34/56 2012-06-22 13:04:45 2019-01-23 09:56:19 2012-06-22 13:04:45 thesis show 0 du Plessis Andrew Dong Hanshan Chen Jian University of Birmingham Low temperature plasma surface modification of stainless steels for ice sliding applications unpub T1 TN TS 10col_ephy Stainless steels used in ice sliding applications, such as in the blades of ice skates, ski edges and runners of bobsleigh’s have notoriously poor tribological properties. During the study, microstructure and tribological behavior of AISI 420 and AISI 316 were studied and through the application of low temperature plasma surface modification, it has been possible to improve the base properties exhibited by the materials. Both grades of steel were subjected to a range of plasma surface modifications, using nitriding, carburizing and carbo-nitriding techniques over a set temperature range. Improvements in the surface hardness were documented in all cases. Characterization of the depth of the modified layer was carried out using SEM, GDOES and cross-sectional micro-hardness to obtain optimum conditions for treatment of replica steel blades for use in simulation wear testing. A synthetic ice substitute was created, for tribological testing, and an improvement in performance was observed following the surface modification procedure. 2012-07 graduation eng author unchecked This unpublished thesis/dissertation is copyright of the author and/or third parties. The intellectual property rights of the author or third parties in respect of this work are as defined by The Copyright Designs and Patents Act 1988 or as modified by any successor legislation. Any use made of information contained in this thesis/dissertation must be in accordance with that legislation and must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the permission of the copyright holder. public 98 University of Birmingham School of Metallurgy and Materials m_rs na 2012-07 graduation