Published June 2013 | Version v1
Journal article Metadata-only

Correlative atom-probe tomography and transmission electron microscope study of a chemical transition in a spinel on an oxidized nickel-based superalloy

Creators

  • 1. Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208-3108 (United States)
  • 2. Northwestern University Center for Atom-Probe Tomography, Materials Research Science and Engineering Center, Evanston, IL 60028-3108 (United States)

Description

Complex thermally grown oxides (TGOs) are formed on a single-crystal Ni-based superalloy due to a large fraction of alloying elements. Combining atom-probe tomography and transmission electron microscopy analyses, the three-dimensional elemental distributions of metal oxides of the spinel and refractory metal-oxide regions are presented. A spinel-type oxide, Ni(Cr,Al)2O4, is formed with a crystallographic orientation relationship with the alloy substrate, which decomposes into other oxides. The sequence of oxides observed in the TGO are NiO → Cr2O3 → Ta2O5 → NiTaO4, NiTa2O6 → Ni(Cr,Al)2O4 → Al2O3

Availability note (English)

Available from http://dx.doi.org/10.1016/j.scriptamat.2013.02.025

Additional details

Identifiers

DOI
10.1016/j.scriptamat.2013.02.025;
PII
S1359-6462(13)00094-8;

Publishing Information

Journal Title
Scripta Materialia
Journal Volume
68
Journal Issue
11
Journal Page Range
p. 909-912
ISSN
1359-6462
CODEN
SCMAF7

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
46027868
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
ALLOYS; ALUMINIUM OXIDES; CHROMATES; CHROMIUM OXIDES; MONOCRYSTALS; NICKEL; NICKEL OXIDES; PROBES; REFRACTORY METALS; SPINELS; SUBSTRATES; TANTALUM OXIDES; TRANSMISSION ELECTRON MICROSCOPY
Descriptors DEC
ALUMINIUM COMPOUNDS; CHALCOGENIDES; CHROMIUM COMPOUNDS; CRYSTALS; ELECTRON MICROSCOPY; ELEMENTS; METALS; MICROSCOPY; MINERALS; NICKEL COMPOUNDS; OXIDE MINERALS; OXIDES; OXYGEN COMPOUNDS; REFRACTORY METAL COMPOUNDS; TANTALUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS

Optional Information

Copyright
Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.