Alloy formation during the cementation of gold on copper from ammoniacal thiosulfate solutions

Jaeheon Lee; J. Brent Hiskey

doi:10.1002/9781118804407.ch7

Alloy formation during the cementation of gold on copper from ammoniacal thiosulfate solutions

Jaeheon Lee
, J. Brent Hiskey

Mining and Geological Engineering

Research output: Contribution to conference › Paper › peer-review

2 Scopus citations

Abstract

Gold-copper alloys are shown to form during the cementation of gold on copper in a solution containing 0.25M [S₂O₃^2-] at 25°C. The alloy composition is strongly dependent on the initial Cu:Au ratio in solution and ranges from Au₃Cu to AuCu₃. XPS results for Au, Cu, S, and O are reported as a function of depth through an entire deposited film with an initial solution containing 20 ppm [Au] and 30 ppm [Cu]. The deposit contained about 20 atomic % gold and was predominantly Cu₃Au. Underpotential deposition (UPD) theory is discussed as a mechanism for explaining the formation of these alloys. Several other systems that produce alloys during contact reduction/cementation are also discussed.

Original language	English (US)
Pages	1167-1177
Number of pages	11
DOIs	https://doi.org/10.1002/9781118804407.ch7
State	Published - 2003
Event	Hydrometallurgy 2003: Proceedings of the 5th International Symposium - Vancouver, BC, Canada Duration: Aug 24 2003 → Aug 27 2003

Other

Other	Hydrometallurgy 2003: Proceedings of the 5th International Symposium
Country/Territory	Canada
City	Vancouver, BC
Period	8/24/03 → 8/27/03

ASJC Scopus subject areas

Filtration and Separation

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10.1002/9781118804407.ch7

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title = "Alloy formation during the cementation of gold on copper from ammoniacal thiosulfate solutions",

abstract = "Gold-copper alloys are shown to form during the cementation of gold on copper in a solution containing 0.25M [S2O32-] at 25°C. The alloy composition is strongly dependent on the initial Cu:Au ratio in solution and ranges from Au3Cu to AuCu3. XPS results for Au, Cu, S, and O are reported as a function of depth through an entire deposited film with an initial solution containing 20 ppm [Au] and 30 ppm [Cu]. The deposit contained about 20 atomic \% gold and was predominantly Cu3Au. Underpotential deposition (UPD) theory is discussed as a mechanism for explaining the formation of these alloys. Several other systems that produce alloys during contact reduction/cementation are also discussed.",

author = "Jaeheon Lee and Hiskey, \{J. Brent\}",

year = "2003",

doi = "10.1002/9781118804407.ch7",

language = "English (US)",

pages = "1167--1177",

note = "Hydrometallurgy 2003: Proceedings of the 5th International Symposium ; Conference date: 24-08-2003 Through 27-08-2003",

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T1 - Alloy formation during the cementation of gold on copper from ammoniacal thiosulfate solutions

AU - Lee, Jaeheon

AU - Hiskey, J. Brent

PY - 2003

Y1 - 2003

N2 - Gold-copper alloys are shown to form during the cementation of gold on copper in a solution containing 0.25M [S2O32-] at 25°C. The alloy composition is strongly dependent on the initial Cu:Au ratio in solution and ranges from Au3Cu to AuCu3. XPS results for Au, Cu, S, and O are reported as a function of depth through an entire deposited film with an initial solution containing 20 ppm [Au] and 30 ppm [Cu]. The deposit contained about 20 atomic % gold and was predominantly Cu3Au. Underpotential deposition (UPD) theory is discussed as a mechanism for explaining the formation of these alloys. Several other systems that produce alloys during contact reduction/cementation are also discussed.

AB - Gold-copper alloys are shown to form during the cementation of gold on copper in a solution containing 0.25M [S2O32-] at 25°C. The alloy composition is strongly dependent on the initial Cu:Au ratio in solution and ranges from Au3Cu to AuCu3. XPS results for Au, Cu, S, and O are reported as a function of depth through an entire deposited film with an initial solution containing 20 ppm [Au] and 30 ppm [Cu]. The deposit contained about 20 atomic % gold and was predominantly Cu3Au. Underpotential deposition (UPD) theory is discussed as a mechanism for explaining the formation of these alloys. Several other systems that produce alloys during contact reduction/cementation are also discussed.

UR - https://www.scopus.com/pages/publications/1642360724

UR - https://www.scopus.com/pages/publications/1642360724#tab=citedBy

U2 - 10.1002/9781118804407.ch7

DO - 10.1002/9781118804407.ch7

M3 - Paper

AN - SCOPUS:1642360724

SP - 1167

EP - 1177

T2 - Hydrometallurgy 2003: Proceedings of the 5th International Symposium

Y2 - 24 August 2003 through 27 August 2003

ER -

Alloy formation during the cementation of gold on copper from ammoniacal thiosulfate solutions

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