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dc.contributor.authorOraby, El-Sayed
dc.contributor.authorJeffrey, Matthew
dc.date.accessioned2017-01-30T13:56:05Z
dc.date.available2017-01-30T13:56:05Z
dc.date.created2014-03-23T20:00:53Z
dc.date.issued2010
dc.identifier.citationOraby, E. and Jeffrey, M. 2010. An Electrochemical Study of the Dissolution of Pure Gold And Gold-Silver Alloys in Thiosulfate Leach Solutions. ECS Transactions. 28 (6): pp. 237-248.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/36507
dc.identifier.doi10.1149/1.3367917
dc.description.abstract

A fundamental electrochemical study of gold and gold/silver alloys in thiosulfate solutions showed that although the oxidation is a complex process, there was no selective dissolution of either gold or silver from the alloys during oxidation. The presence of copper and thiourea catalyses the oxidation of the alloys, resulting in good leaching for thiosulfate systems when utilising either of these species. Surprisingly for copper containing solutions, the oxidation rate is largely independent of potential, and is higher for pure gold than for the 4% Ag and 8% Ag alloys. For thiourea containing solutions, the rate of alloy oxidation increases with increases in the silver content of the alloy. In the absence of copper or thiourea, the only alloy which showed appreciable oxidation was 50% Au / 50%Ag, although the rate of oxidation did increase with an increase in silver content from 0 to 50%.

dc.publisherThe Electrochemical Society
dc.subjectsilver
dc.subjectthiosulfate
dc.subjectGold
dc.subjectalloys
dc.titleAn Electrochemical Study of the Dissolution of Pure Gold And Gold-Silver Alloys in Thiosulfate Leach Solutions
dc.typeJournal Article
dcterms.source.volume28
dcterms.source.number6
dcterms.source.startPage237
dcterms.source.endPage248
dcterms.source.issn1938-5862
dcterms.source.titleECS Transactions
curtin.department
curtin.accessStatusFulltext not available


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