Intermittence detection in fretting corrosion studies of electrical contacts

The operational durability of a hip endoprosthesis depends, among others, on the intensity of the damage processes of kinematic junction elements caused by fretting corrosion processes. In the article, the results of comparative studies on the fretting corrosion resistance of alloys commonly used for hip joints, i.e. Ti6Al4V, CoCrMo, stainless steel M30NW, and 316LVM, are presented. The research was carried out by means of a tribological pin-on-disc tester working in reciprocating motion, integrated with a potentiostat equipped with a triac electrode. The tribosystem was a pin pressed by a constant force to a reciprocating disc with a certain amplitude and frequency. The tests were carried out in a medium of aqueous bovine serum heated to 37°C. The conducted comparative tests of the above mentioned materials will allow selection of the best material combination in terms of tribological and fretting corrosion resistance. Under optimized conditions, the modified oils obtained a needed appropriate viscosity class.

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A model for fretting corrosion studies on orthopaedic materials the TA6V4-PMMA couple behaviour

Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society ◽

10.1109/iembs.1992.5760829 ◽

1992 ◽

Author(s):

Louis M. Rabbe ◽

Jean Rieu ◽

Alexis Lopez ◽

Pierre Combrade ◽

Marc Robelet

Keyword(s):

Fretting Corrosion ◽

Corrosion Studies

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Fretting corrosion of tin-coated electrical contacts

Microelectronics Reliability ◽

10.1016/0026-2714(88)90160-6 ◽

1988 ◽

Vol 28 (4) ◽

pp. 654

Keyword(s):

Electrical Contacts ◽

Fretting Corrosion

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Wear of Electric Contact Surfaces

ASME/STLE 2007 International Joint Tribology Conference, Parts A and B ◽

10.1115/ijtc2007-44315 ◽

2007 ◽

Cited By ~ 1

Author(s):

J. Song

Keyword(s):

Wear Resistance ◽

Precious Metals ◽

Electrical Contacts ◽

Fretting Corrosion ◽

Coating Materials ◽

Long Term Stability ◽

Electric Contacts ◽

Contact Surfaces ◽

Contact Shape

Fretting corrosion is one of the important factors which limits the lifetime of electric contacts. In order to avoid fretting corrosion coatings of different precious metals are used. The wear resistance of the coating determines the lifetime of electrical contacts. The long term characteristics of gold coated electrical contacts with different additives and contact shapes are investigated and the results are analyzed. It is found out that the wear resistance of contact coating can be largely influenced by the amount of the additive in gold and by the design of the contact shape. Only the combination of an optimized contact shape with suitable coating materials leads to a long term stability of electric contacts.

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Fretting corrosion studies of an extrinsic conducting polymer and tin interface

Proceedings of the Forth-Seventh IEEE Holm Conference on Electrical Contacts (IEEE Cat. No.01CH37192) ◽

10.1109/holm.2001.953214 ◽

2002 ◽

Cited By ~ 5

Author(s):

J. Swingler ◽

J.W. McBride

Keyword(s):

Conducting Polymer ◽

Fretting Corrosion ◽

Corrosion Studies

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Correlation between Wear Resistance and Lifetime of Electrical Contacts

Advances in Tribology ◽

10.1155/2012/893145 ◽

2012 ◽

Vol 2012 ◽

pp. 1-9 ◽

Cited By ~ 13

Author(s):

Jian Song ◽

Christian Koch ◽

Liangliang Wang

Keyword(s):

Electrical Conductivity ◽

Wear Resistance ◽

High Performance ◽

Electrical Contacts ◽

Electrical Performance ◽

High Wear Resistance ◽

High Electrical Conductivity ◽

Fretting Corrosion ◽

Long Lifetime

Electrical contacts are usually plated in order to prevent corrosion. Platings of detachable electrical contacts experience wear because of the motion between contacts. Once the protecting platings have been worn out, electrical contacts will fail rapidly due to corrosion or fretting corrosion. Therefore the wear resistance of the platings is a very important parameter for the long lifetime of electrical contacts. Many measures which improve the wear resistance can diminish the conductivity of the platings. Due to the fact that platings of electrical contacts must have both a high wear resistance and a high electrical conductivity, the manufacturing of high performance platings of electrical contacts poses a great challenge. Our study shows firstly the correlation between the wear resistance of platings and lifetime of electrical contacts and then the measures, which improve the wear resistance without impairing the electrical performance of the contacts.

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