Analysis of Corrosion Products Formed on Copper in Cl2 / H 2 S / NO 2 Exposure
| Autor: | J. Boissel, I. Odnevall, M. Lenglet, J. Lopitaux, J. Gautier, M. Carballeira, J. Guinement, C. Leygraf, J. ‐C. Noualhaguet |
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| Rok vydání: | 1995 |
| Předmět: |
chemistry.chemical_classification
Cuprite Sulfide Renewable Energy Sustainability and the Environment Chemistry Inorganic chemistry Center (category theory) Oxide Analytical chemistry chemistry.chemical_element engineering.material Condensed Matter Physics Copper Surfaces Coatings and Films Electronic Optical and Magnetic Materials Corrosion chemistry.chemical_compound visual_art Materials Chemistry Electrochemistry visual_art.visual_art_medium engineering Atacamite Chemical composition |
| Zdroj: | Journal of The Electrochemical Society. 142:3690-3696 |
| ISSN: | 1945-7111 0013-4651 |
| DOI: | 10.1149/1.2048400 |
| Popis: | A joint effort has been undertaken, involving four laboratories and nine different analytical techniques, aiming at characterizing corrosion products on copper formed in mixed flowing gas test containing Cl{sub 2}, H{sub 2}S, and NO{sub 2}. The results and considerations clearly show that the identification of different crystalline or noncrystalline phases in the corrosion products only can be performed by a combination of independently working analytical techniques. Cuprite, Cu{sub 2}O, is the dominating phase during initial exposure, whereas cuprite together with atacamite, Cu{sub 2}Cl(OH){sub 3}, are the most abundant phases after 10 days of exposure. In addition, the corrosion products contain minor amounts of sulfide, Cu{sub 2}S, sulfate, most likely as posnjakite, Cu{sub 4}SO{sub 4}(OH){sub 6}{center_dot}H{sub 2}O, and nitrate, most likely as gerhardite, Cu{sub 2}NO{sub 3}(OH){sub 3}. A nonstoichiometric cuprous oxide, Cu{sub 3}O{sub 2}, has also been detected by several techniques. |
| Databáze: | OpenAIRE |
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