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The capability of Transmission Kikuchi Diffraction technique for characterizing nano-grained oxide scales formed on a FeCrAl stainless steel

Seyedeh Nooshin Mortazavi (Institutionen för teknisk fysik, Materialens mikrostruktur ) ; Mohsen Esmaily (Institutionen för kemi och kemiteknik, Oorganisk miljökemi) ; Mats Halvarsson (Institutionen för teknisk fysik, Materialens mikrostruktur )
Materials letters (0167-577X). Vol. 147 (2015), p. 42-45.
[Artikel, refereegranskad vetenskaplig]

This letter focuses on the capability of Transmission Kikuchi Diffraction (TKD) in Scanning Electron Microscope (SEM) for obtaining microstructural and micro-textural information from nano-grained oxide scales formed on a FeCrAl alloy. Orientation maps, with an indexing rate of 85%, showed the formation of grains in the range 20-300 nm. TKD revealed the existence of an orientation relationship at the alloy/oxide interface as well as the presence of a single grain (40 nm) with spinel structure in the alumina scale. A pre-tilted sample holder was designed for 110 investigations at short working distances with minimized mechanical drift of the thin foils. (C) 2015 The Authors. Published by Elsevier B.V.

Nyckelord: Metals and alloys, Oxidation, Microstructure, Nanocrystalline materials, Texture



Denna post skapades 2015-05-11. Senast ändrad 2015-06-22.
CPL Pubid: 216929

 

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Institutioner (Chalmers)

Institutionen för teknisk fysik, Materialens mikrostruktur (2012-2015)
Institutionen för kemi och kemiteknik, Oorganisk miljökemi

Ämnesområden

Ytbehandlingsteknik

Chalmers infrastruktur

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