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

Neumeyer, B., Hensler, John, O'Mullane, Anthony P., & Bhargava, Suresh K. (2009) A facile chemical screening method for the detection of stress corrosion cracking in 9 carat gold alloys. Gold Bulletin, 42(3), pp. 209-214.

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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.

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ID Code: 64308
Item Type: Journal Article
Refereed: Yes
DOI: 10.1007/BF03214936
ISSN: 0017-1557
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Deposited On: 19 Nov 2013 23:55
Last Modified: 21 Nov 2013 21:44

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