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Electrochemical and passive characterization of a beta type Ti45Zr38Al17 cast rod in nitric acid medium
2012 (English)In: Electrochimica Acta, ISSN 0013-4686, E-ISSN 1873-3859, Vol. 85, p. 210-219Article in journal (Refereed) Published
Abstract [en]

Electrochemical behavior of the recently developed beta-type Ti–38at% Zr–17at% Al (TZA) alloy has been studied in nitric acid medium for applications in nuclear reprocessing plant. Potentiodynamic polarization and electrochemical impedance studies revealed that the passive film formed on the TZA alloy was highly protective in nature. Mott–Schottky analysis of the passive film formed on TZA alloy showed n-type semiconducting properties. The electrochemical data confirmed the superior corrosion resistance of TZA alloy as the passive film formed exhibited better properties than that of the commercial pure Ti. XPS analyses confirmed that the stable passivity of TZA alloy in nitric acid was due to the formation of thick and protective passive layer, predominantly of ZrO2 with TiO2.

Place, publisher, year, edition, pages
2012. Vol. 85, p. 210-219
Keywords [en]
Beta titanium alloy, Polarization, EIS, XPS, Passive film
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:du-31398DOI: 10.1016/j.electacta.2012.08.047OAI: oai:DiVA.org:du-31398DiVA, id: diva2:1381203
Available from: 2019-12-20 Created: 2019-12-20 Last updated: 2019-12-20Bibliographically approved

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Publisher's full texthttp://www.sciencedirect.com/science/article/pii/S0013468612013370

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Jayamani, Jayaraj

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