Microstructural analysis of multi-phase ultra-thin oxide Overgrowth on Al–Mg Alloy by high resolution transmission electron microscopy

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dc.contributor.author Bandaru, Narendra
dc.contributor.author Ajmera, Darshan
dc.contributor.author Manwani, Krishna
dc.contributor.author Majhi, Sasmita
dc.contributor.author Panda, Emila
dc.date.accessioned 2016-07-20T09:17:05Z
dc.date.available 2016-07-20T09:17:05Z
dc.date.issued 2017-07
dc.identifier.citation Bandaru, Narendra; Ajmera, Darshan; Manwani, Krishna; Majhi, Sasmita and Panda, Emila, “Microstructural analysis of multi-phase ultra-thin oxide Overgrowth on Al–Mg Alloy by high resolution transmission electron microscopy”, Transactions of the Indian Institute of Metals, DOI: 10.1007/s12666-016-0920-x, Jul. 2017. en_US
dc.identifier.issn 0972-2815
dc.identifier.issn 0975-1645
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/2367
dc.identifier.uri https://doi.org/10.1007/s12666-016-0920-x
dc.description.abstract High-resolution transmission electron microscopy analyses are carried out to understand the microstructure of the ultra-thin oxide-film grown on a (native) amorphous Al2O3-coated Al-0.8 at.% Mg alloy substrate at T = 600 K for t = 2 h and at pO2 of 1 × 10−2 Pa. This oxide-film is found to be non-uniformly thick with thicknesses varying from 1.50 to 4.60 nm. Occasionally, this oxide is found to diffuse into the Al–Mg alloy substrate, forming oxide thicknesses up to 10.5 nm. Overall, this oxide-film is found to consist of a mixed amorphous, (poly) crystalline and an intermediate amorphous-to-crystalline transition regions, with crystalline regions consisting mostly of MgO and the diffused oxide regions into the Al–Mg alloy substrate coated with γ-Al2O3. These observations are then compared with the experimental results obtained using angle-resolved X-ray Photoelectron Spectroscopy analysis and thermodynamic predictions for the growth of an ultra-thin oxide-film due to dry, thermal oxidation of Al–Mg alloy substrates. en_US
dc.description.statementofresponsibility by Narendra Bandaru, Darshan Ajmera, Krishna Manwani, Sasmita Majhi and Emila Panda
dc.format.extent Vol. 70, no. 5, pp. 1269–1275
dc.language.iso en_US en_US
dc.publisher Springer en_US
dc.subject High-resolution transmission electron microscopy (HR-TEM) en_US
dc.subject Oxidation en_US
dc.subject Al2O3 en_US
dc.subject MgO en_US
dc.subject Ultra-thin en_US
dc.title Microstructural analysis of multi-phase ultra-thin oxide Overgrowth on Al–Mg Alloy by high resolution transmission electron microscopy en_US
dc.type Article en_US
dc.relation.journal Transactions of the Indian Institute of Metals


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