paper 635 微动检测涂层强度
2012-03-13 14:23
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Abstract
Considered as a plague for numerous industrial assemblies, fretting, associated to slight oscillatory displacement, is encountered in all
quasi-static contacts subjected to vibration. Depending on sliding conditions, cracking or wear damage can be observed. During the past
three decades there has been a huge development in surface treatments. Thousands of new surface treatments and coatings are now available.
The critical challenge is to evaluate such treatments against fretting loadings. To achieve this objective, a fast fretting methodology has been developed. It consists in quantifying the palliative friction, cracking and wear responses through a very small number of fretting tests. By defining quantitative variables, a normalized polar fretting damage chart approach is introduced. Applied to shot peening, chromium coatings and WC-Co coatings, it demonstrates the potential benefit of a thermal sprayed WC-Co coating.
© 2005 Elsevier B.V. All rights reserved.
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