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The effect of the white layer on micro-pitting and surface contact fatigue failure of nitrided gears

Lookup NU author(s): Professor Steve BullORCiD, Emeritus Professor Terry Evans, Professor Brian Shaw, Professor Dieter Hofmann OBE

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Abstract

The effect of the 'white layer' in nitrided steel on micro-pitting of gears has been investigated by comparing the performance of case carburized and nitrided gears fabricated from modern, low-oxygen steels. It is shown that the white layer, produced during nitriding, imparts a high resistance to micro-pitting. Because surface contact fatigue is nucleated at micro-pits in low-oxygen steels, the resistance to micro-pitting also manifests itself in a higher fatigue resistance for the nitrided material.

Publication metadata

Author(s): Bull SJ, Evans JT, Shaw BA, Hofmann DA

Publication type: Article

Publication status: Published

Journal: Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology

Year: 1999

Volume: 213

Issue: 4

Pages: 305-313

Print publication date: 01/01/1999

ISSN (print): 1350-6501

ISSN (electronic): 2041-305X

Publisher: Professional Engineering Publishing

URL: http://dx.doi.org/10.1243/1350650991542695

DOI: 10.1243/1350650991542695

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