By Topic

Quantification of the electrical contact endurance of thin platted silver coatings subjected to fretting wear: Influence of coating thickness

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $31
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Jedrzejczyk, P. ; LTDS, Ecole Centrale de Lyon, Ecully, France ; Fouvry, S. ; Alquier, O.

Materials used in the connectors in cars are expected to have very low and stable electrical resistance and high resistance against corrosion. The environmental and mechanical factors strongly influence mentioned parameters. Thus numerous coating systems consisting of pure metallic materials, noble and non noble, doped as well as soft coatings were developed and studied. In this work the degradation mechanisms of homogeneous bronze/nickel/silver coatings systems were studied under fretting loadings. Five silver layer thicknesses (1.3μm, 2μm, 3μm, 4μm and 5μm) were investigated. Different test procedures have been applied to identify first the transition from partial to gross slip conditions and establish the electrical endurances as a function of the applied displacement amplitudes in the finite endurance gross slip condition. Very basic criteria have been introduced to rationalize and compare the electrical endurance as a function of the coating thickness. It is shown that the evolution of the electrical endurance vs. the coating thickness displays a nearly linear increase above a threshold coating thickness. Below this threshold, silver was found to delaminate from nickel interlayer in the very earlier stage of the test inducing very short electrical endurance.

Published in:

Electrical Contacts (ICEC 2012), 26th International Conference on

Date of Conference:

14-17 May 2012