English, Article edition: EVALUATION OF THE PERFORMANCE OF ELECTROLESS NiâB COATED BRASS CONTACTS UNDER FRETTING CONDITIONS T. S. N. SANKARA NARAYANAN; YOUNG WOO PARK; KANG YONG LEE

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Bookmark: http://trove.nla.gov.au/version/84210
Physical Description
  • article
Language
  • English

Edition details

Title
  • EVALUATION OF THE PERFORMANCE OF ELECTROLESS NiâB COATED BRASS CONTACTS UNDER FRETTING CONDITIONS
Author
  • T. S. N. SANKARA NARAYANAN
  • YOUNG WOO PARK
  • KANG YONG LEE
Physical Description
  • article
Notes
  • The performance of electroless (EL) NiâB coated brass contacts under fretting conditions was evaluated. The contact resistance of EL NiâB coated brass contact was measured as a function of fretting cycles. The surface profile and wear depth of the fretted zone were measured using laser scanning microscope. The study reveals that EL NiâB coated contacts exhibit better performance under fretting conditions. However, at conditions which are prone for severe oxidation such as, low frequency (3 Hz) or high temperature (155°C), EL NiâB coated contacts fail to exhibit a better stability. The quick removal of the oxide film by fretting motion, rapid oxidation of the fresh metallic particles and trapping of the oxidation products in the remaining coating, cause the contact resistance to increase to unacceptable levels at such conditions. The study concludes that EL NiâB coating is not a suitable choice for connector contacts that could experience fretting under highly oxidizing conditions.
  • Fretting, electroless, NiâB coating, contact resistance
  • RePEc:wsi:srlxxx:v:15:y:2008:i:04:p:443-452
Language
  • English
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