Influence of praseodymium - synergistic corrosion inhibition in mixed rare-earth diphenyl phosphate systems
Data(s) |
01/01/2007
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Resumo |
Mixed rare-earth organophosphates have been investigated as potential corrosion inhibitors for AA2024-T3, and previously have shown synergistic inhibition behavior; however, the mechanism was not identified. In this paper, a key factor contributing to corrosion inhibition of AA2024-T3 with mischmetal diphenyl phosphate [Mm(dpp)3] is the unique stability of Pr(dpp)3 compared to other key rare earths in mischmetal. Although increasing pH causes precipitation of other components, the Pr compound is stable at higher pH. Electrochemically, a synergy is evident when Ce(dpp)3 and Pr(dpp)3 are combined. Raman mapping indicates the Pr(dpp)3 inhibitor leads to a more uniform coverage of the alloy. <br /> |
Identificador | |
Idioma(s) |
eng |
Publicador |
Electrochemical Society |
Relação |
http://dx.doi.org/10.1149/1.2790724 |
Direitos |
2007, Electrochemical Society |
Palavras-Chave | #cerium compounds #corrosion inhibitors #organic compounds #pH #praseodymium compounds #precipitation #Raman spectra |
Tipo |
Journal Article |