Lookup NU author(s): Dr Moorthy Vaidhianathasamy,
Professor Brian Shaw
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The influence of as-ground surface and the BALINIT (R) C and Nb-S coatings on contact fatigue damage have been investigated using testing of case-carburised S156 steel helical gears. The micro-surface features on the as-ground gear flank tend to initiate micro-pitting. In BALINIT (R) C coated gears, the surface irregularities are removed by polishing effect resulting in small scale initiation of micro-pitting at the interface between polished and unpolished regions. In Nb-S coated gears, the coating tends to penetrate and fill-up the surface micro-valleys and hence showed only scattered micro-pitting. The Nb-S coated gears did not produce any tooth profile loss whilst the BALINIT (R) C coated gears produced profile loss. However, both BALINIT (R) C and Nb-S coated gears show enhanced contact fatigue performance. (C) 2012 Elsevier Ltd. All rights reserved.
Author(s): Moorthy V, Shaw BA
Publication type: Article
Publication status: Published
Journal: Tribology International
Print publication date: 08/03/2012
ISSN (print): 0301-679X
ISSN (electronic): 1879-2464
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