Passivation and red-ox processes of refractory metals in carbamide-chloride melt
The electrochemical behavior of refractory metals (Pt, Pd, W, Ti, Nb, Ta) in the low temperature carbamide-NH4Cl melt (texp=120 oC) and the structure of complex ions formed after anodic dissolution have been studied by cyclic voltammetry and spectroscopic methods. The features of the mechanism of me...
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| Format: | Article |
| Language: | English |
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University of Belgrade, Technical Faculty, Bor
2003-01-01
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| Series: | Journal of Mining and Metallurgy. Section B: Metallurgy |
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| Online Access: | http://www.doiserbia.nb.rs/img/doi/1450-5339/2003/1450-53390302069T.pdf |
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| author | Tumanova N. Volkov S. Kochetova S. Triphonova T. Buryak N. |
| author_facet | Tumanova N. Volkov S. Kochetova S. Triphonova T. Buryak N. |
| author_sort | Tumanova N. |
| collection | DOAJ |
| description | The electrochemical behavior of refractory metals (Pt, Pd, W, Ti, Nb, Ta) in the low temperature carbamide-NH4Cl melt (texp=120 oC) and the structure of complex ions formed after anodic dissolution have been studied by cyclic voltammetry and spectroscopic methods. The features of the mechanism of metal electrodissolution and possibilities of the cathodic reduction of complexes formed in the melt are presented. A possible correlation between passivation processes on the metal surface, the mechanism of electrodissolution, composition of complexes and the electrochemical activity of metals and their ions are discussed. The data obtained reflect the possibilities to use the carbamide-NH4Cl melt for practical purposes in electroplating and electropolishing. |
| format | Article |
| id | doaj-art-b07f1ae7adaf4cb1a557612039fe700e |
| institution | Kabale University |
| issn | 1450-5339 |
| language | English |
| publishDate | 2003-01-01 |
| publisher | University of Belgrade, Technical Faculty, Bor |
| record_format | Article |
| series | Journal of Mining and Metallurgy. Section B: Metallurgy |
| spelling | doaj-art-b07f1ae7adaf4cb1a557612039fe700e2025-02-02T10:27:48ZengUniversity of Belgrade, Technical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392003-01-01391-2697910.2298/JMMB0302069TPassivation and red-ox processes of refractory metals in carbamide-chloride meltTumanova N.Volkov S.Kochetova S.Triphonova T.Buryak N.The electrochemical behavior of refractory metals (Pt, Pd, W, Ti, Nb, Ta) in the low temperature carbamide-NH4Cl melt (texp=120 oC) and the structure of complex ions formed after anodic dissolution have been studied by cyclic voltammetry and spectroscopic methods. The features of the mechanism of metal electrodissolution and possibilities of the cathodic reduction of complexes formed in the melt are presented. A possible correlation between passivation processes on the metal surface, the mechanism of electrodissolution, composition of complexes and the electrochemical activity of metals and their ions are discussed. The data obtained reflect the possibilities to use the carbamide-NH4Cl melt for practical purposes in electroplating and electropolishing.http://www.doiserbia.nb.rs/img/doi/1450-5339/2003/1450-53390302069T.pdflow-temperature meltrefractory metalselectrochemistrypassivation |
| spellingShingle | Tumanova N. Volkov S. Kochetova S. Triphonova T. Buryak N. Passivation and red-ox processes of refractory metals in carbamide-chloride melt Journal of Mining and Metallurgy. Section B: Metallurgy low-temperature melt refractory metals electrochemistry passivation |
| title | Passivation and red-ox processes of refractory metals in carbamide-chloride melt |
| title_full | Passivation and red-ox processes of refractory metals in carbamide-chloride melt |
| title_fullStr | Passivation and red-ox processes of refractory metals in carbamide-chloride melt |
| title_full_unstemmed | Passivation and red-ox processes of refractory metals in carbamide-chloride melt |
| title_short | Passivation and red-ox processes of refractory metals in carbamide-chloride melt |
| title_sort | passivation and red ox processes of refractory metals in carbamide chloride melt |
| topic | low-temperature melt refractory metals electrochemistry passivation |
| url | http://www.doiserbia.nb.rs/img/doi/1450-5339/2003/1450-53390302069T.pdf |
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