The incorporation of ambipolar diffusion in deformation mechanism maps for ceramics
The incorporation of ambipolar diffusion in deformation mechanism maps for ceramics
Ambipolar diffusion gives rise to four distinct types of diffusion creep in ceramic materials, depending on whether the processes of lattice and grain-boundary diffusion creep are controlled by the anions or cations, respectively. These four processes are incorporated in a deformation mechanism map for diffusion creep in pure Al2O3, using a new form of map which is independent of the selected stress level. This map may be used to determine the rate-controlling mechanism for diffusion creep under any selected experimental conditions. By superimposing dislocation creep on to the map, it is possible to estimate the highest permissible stress and the lowest feasible temperature for experimental observation of any of the diffusion creep processes.
Langdon, Terence G
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Mohamed, Farghalli A.
0d8f02a9-fb40-4e5a-9222-3aecf3e4a460
Langdon, Terence G
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Mohamed, Farghalli A.
0d8f02a9-fb40-4e5a-9222-3aecf3e4a460
Langdon, Terence G and Mohamed, Farghalli A.
(1978)
The incorporation of ambipolar diffusion in deformation mechanism maps for ceramics.
Journal of Materials Science, 13.
(doi:10.1007/BF00541795).
(In Press)
Abstract
Ambipolar diffusion gives rise to four distinct types of diffusion creep in ceramic materials, depending on whether the processes of lattice and grain-boundary diffusion creep are controlled by the anions or cations, respectively. These four processes are incorporated in a deformation mechanism map for diffusion creep in pure Al2O3, using a new form of map which is independent of the selected stress level. This map may be used to determine the rate-controlling mechanism for diffusion creep under any selected experimental conditions. By superimposing dislocation creep on to the map, it is possible to estimate the highest permissible stress and the lowest feasible temperature for experimental observation of any of the diffusion creep processes.
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Accepted/In Press date: March 1978
Identifiers
Local EPrints ID: 495281
URI: http://eprints.soton.ac.uk/id/eprint/495281
ISSN: 0022-2461
PURE UUID: 67b5c975-c962-4da2-a9d8-ecdc2e3657f5
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Date deposited: 06 Nov 2024 17:47
Last modified: 07 Nov 2024 02:38
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Author:
Farghalli A. Mohamed
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