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Formation of Copper Sulfide Artifacts During Electrolytic Dissolution of Steel

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Abstract

Based on equilibrium considerations, copper sulfide is not expected to form in manganese-containing steel, yet previous workers reported finding copper sulfide in transmission electron microscope samples which had been prepared by electropolishing. It is proposed that copper sulfide can form during electrolytic dissolution because of the much greater stability of copper sulfide relative to manganese sulfide in contact with an electrolyte containing copper and manganese cations. This mechanism has been demonstrated with aluminum-killed steel samples.

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We are grateful for support of this project by the members of the Center for Iron and Steelmaking Research and useful discussions with Dr Andrey Karasev.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, Center for Iron and Steelmaking Research, Carnegie Mellon University, Pittsburgh, PA, 15213, USA

    Jia Tan & P. Chris Pistorius

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  1. Jia Tan
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  2. P. Chris Pistorius
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Correspondence to P. Chris Pistorius.

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Manuscript submitted January 4, 2013.

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Tan, J., Pistorius, P.C. Formation of Copper Sulfide Artifacts During Electrolytic Dissolution of Steel. Metall Mater Trans B 44, 483–486 (2013). https://doi.org/10.1007/s11663-013-9826-8

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