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Effects of Lubricant on Fretting Corrosion of Tin-Coated Electric Contacts
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  • Journal title : Tribology and Lubricants
  • Volume 32, Issue 3,  2016, pp.88-94
  • Publisher : The Korean Society of Tribologists and Lubrication Engineers
  • DOI : 10.9725/kstle.2016.32.3.88
 Title & Authors
Effects of Lubricant on Fretting Corrosion of Tin-Coated Electric Contacts
Kim, Kwang-Su; Oh, Man-Jin; Han, Dong-Woon; Kim, Ho-Kyung;
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 Abstract
We conduct a series of fretting corrosion tests on tin-coated electric contact to evaluate the effects of lubricant on fretting corrosion behavior. We perform these tests with a constant contact force at 25℃ 50℃, 75°C, and 100℃. In the tests with a span amplitude of 30 μm, we could not determine the conventional behavior of the first, second, and third stages of the change in electric resistance during fretting corrosion and observed that the contact resistance continuously increases with the cycles. This behavior is due to the fact that the generation of oxides on the tin-coated contact is controlled and stabilized by the presence of lubricant. SEM observations on samples with a span amplitude of 77 μm at all testing temperatures confirm that there is less oxide debris on the fretting damaged surface. Hence, for tin-coated electric connector, the effect of lubrication on the lifetime of the electric contact increases as the fretting span decreases and testing temperature increases, compared to those for connector without lubricant. Especially, for a specimen with a span amplitude of 30 μm at 100℃, the increment in contact lifetime due to lubricant is found to be more than 20 times, compared to that without lubricant.
 Keywords
fretting corrosion;electric contacts;fretting lifetime;electric contact resistance;
 Language
Korean
 Cited by
 References
1.
J. Swingler and J. W. McBride, “The synergistic relationship of stresses in the automotive connector”, Proc. 19th Int. Conf. Electric Contact Phenom., Nuremburg, Germany, 1998, pp. 141–145, 1998.

2.
J. Swingler, J.W. McBride, and C. Maul, “Degradation of road tested automotive connectors”, IEEE Trans. Comp. Pack. Tech., Vol. 23, No. 1, pp. 157-164. 2000. crossref(new window)

3.
J. Swingler, “The automotive connector: The influence of powering and lubricating a fretting contact interface”, Proc. Inst. Mech. Engr. Part D: J Automotive Eng. Vol. 214, pp. 615-623, 2002.

4.
T. S. N. S. Narayanan1, Y. W. Park, K. Y. Lee, “Fretting corrosion of lubricated tin plated copper alloy contacts: Effect of temperature”, Tribology Int. Vol. 41, pp. 87-102, 2008. crossref(new window)

5.
J. J. Mottine, B. T. Reagor, “The effect of lubrication on fretting corrosion at dissimilar metal interfaces in socketed IC device applications”, IEEE Trans. Comp. Hybr. Manuf. Tech., Vol. 8, No. 1, pp. 173-81, 1985. crossref(new window)

6.
Oh, M. J., Kang, S. H., Lee, M. S., Kim, H. K., “Fretting corrosion behavior of tin-plated electric connectors with variation in temperature”, J. Korean Soc. Tribol. Lubr. Eng., Vol. 30, No. 3, pp. 146-155, 2014.

7.
Oh, M. J., "The variation of electric contact resistance due to change in contact force in a tin-plated connector", Master Thesis, Seoul National Univ. of Sci. and Tech., 2012.