Oxygen and aluminum diffusion in α-Al2O3: How much do we really understand?

Research activities relating to oxygen and aluminium diffusion in doped and undoped alpha-alumina, both polycrystalline and single crystal, are reviewed. Issues discussed include aluminium lattice diffusion, and oxygen lattice and grain boundary diffusion, including enhanced grain boundary diffusion...

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Bibliographic Details
Published inJournal of the European Ceramic Society Vol. 28; no. 7; pp. 1495 - 1507
Main Author Heuer, A.H.
Format Journal Article Conference Proceeding
LanguageEnglish
Published Oxford Elsevier 01.01.2008
Subjects
Condensed matter: structure, mechanical and thermal properties
Creep
Diffusion in solids
Exact sciences and technology
Mechanical and acoustical properties of condensed matter
Mechanical properties of solids
Physics
Self-diffusion and ionic conduction in nonmetals
Transport properties of condensed matter (nonelectronic)
Grain boundaries
Dislocation climb
Aluminium oxide
B. Defects
Creep
Dislocation glide
D. Al2O3
Activation energy
C. Diffusion
Mechanism
B. Grain Boundaries
Self-diffusion
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Summary:Research activities relating to oxygen and aluminium diffusion in doped and undoped alpha-alumina, both polycrystalline and single crystal, are reviewed. Issues discussed include aluminium lattice diffusion, and oxygen lattice and grain boundary diffusion, including enhanced grain boundary diffusion and pipe diffusion. Also discussed is diffusion of creep in polycrystalline alumina and the oxidation of Al2O3-scale-forming alloys. 61 refs.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0955-2219
DOI:10.1016/j.jeurceramsoc.2007.12.020