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Gold Bulletin

, Volume 42, Issue 3, pp 209–214 | Cite as

A facile chemical screening method for the detection of stress corrosion cracking in 9 carat gold alloys

  • B. Neumeyer
  • John Hensler
  • Anthony P. O’MullaneEmail author
  • Suresh K. BhargavaEmail author
Open Access
Scientific Papers

Abstract

Stress corrosion cracking (SCC) is a well known form of environmental attack in low carat gold jewellery. It is desirable to have a quick, easy and cost effective way to detect SCC in alloys and prevent them from being used and later failing in their application. A facile chemical method to investigate SCC of 9 carat gold alloys is demonstrated. It involves a simple application of tensile stress to a wire sample in a corrosive environment such as 1–10 % FeCl3 which induces failure in less than 5 minutes. In this study three quaternary (Au, Ag, Cu and Zn) 9 carat gold alloy compositions were investigated for their resistance to SCC and the relationship between time to failure and processing conditions is studied. It is envisaged that the use of such a rapid and facile screening procedure at the production stage may readily identify alloy treatments that produce jewellery that will be susceptible to SCC in its lifetime.

Keywords

Stress Corrosion Crack Ferric Chloride Solution Carat Gold Facile Chemical Environmental Attack 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

  1. 1.
    R.S. Jackson,Gold Bull., 1978,11, 88CrossRefGoogle Scholar
  2. 2.
    C.C. Merriman; D.F. Bahr; M.G. Norton,Gold Bull., 2005,38, 113Google Scholar
  3. 3.
    M. Grimwade,Gold Tech., 1992,8, 9Google Scholar
  4. 4.
    J.M.M. Dugmore; C.D. DesForges,Gold Bull., 1979,12, 140Google Scholar
  5. 5.
    W.S. Rapson,Gold Bull., 1996,29, 61CrossRefGoogle Scholar
  6. 6.
    M.G. Alvarez; S.A. Fernández; J.R. Galvele,Corrosion Science, 2002,44, 2831CrossRefGoogle Scholar
  7. 7.
    G.S. Duffó; S.B. Farina; J.R. Galvele,Corrosion Science, 2004,46, 1CrossRefGoogle Scholar
  8. 8.
    M.G. Alvarez; S.A. Fernández; J.R. Galvele,Corrosion Science, 2000,42, 739CrossRefGoogle Scholar
  9. 9.
    I.A. Maier; S.A. Fernández; J.R. Galvele,Corrosion Science, 1995,37, 1CrossRefGoogle Scholar
  10. 10.
    R.C. Newman,Corrosion Science, 2008,50, 1807CrossRefGoogle Scholar
  11. 11.
    S.B. Farina; G.S. Duffó; J.R. Galvele,Corrosion Science, 2005,47, 239CrossRefGoogle Scholar
  12. 12.
    B. Malki; A. Legris; J.L. Pastol; D. Gorse,J. Electrochem. Soc., 1999,146, 3702CrossRefGoogle Scholar
  13. 13.
    I. Costa; H.G. De Melo; M. Saiki; O.V. Correa; S.O. Rogero,J. Electroanal. Chem., 2003,544, 113CrossRefGoogle Scholar
  14. 14.
    J.C. Wright; C. Corti,Gold Technology, 1998,23, 27Google Scholar
  15. 15.
    L. Graf, in: Stress corrosion and Embrittlement, W.D. Robertson, (Ed.) John Wiley and Sons: New York, 1956Google Scholar
  16. 16.
    B.G. Ateya; G. Geh; A.H. Carim; H.W. Pickering,J. Electrochem. Soc., 2002,149, B27CrossRefGoogle Scholar
  17. 17.
    M.L. Montoto; G.S. Duffó; J.R. Galvele,Corrosion Science, 2001,43, 755CrossRefGoogle Scholar
  18. 18.
    G.W.C. Kaye; T.H. Laby, in: Tables of physical and chemical constants, Longman: London, 1993Google Scholar
  19. 19.
    W.S. Rapson; T. Groenwald, in: Gold Usage, Academic Press: New York, 1978, 55Google Scholar

Copyright information

© World Gold Council 2009

Authors and Affiliations

  1. 1.Department of Chemical EngineeringRMIT UniversityMelbourneAustralia
  2. 2.School of Applied SciencesRMIT UniversityMelbourneAustralia

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