This title appears in the Scientific Report :
2020
Please use the identifier:
http://hdl.handle.net/2128/26467 in citations.
Please use the identifier: http://dx.doi.org/10.1016/j.scriptamat.2019.11.034 in citations.
Grain growth in Nio–MgO and its dependence on faceting and the equilibrium crystal shape
Grain growth in Nio–MgO and its dependence on faceting and the equilibrium crystal shape
The impact of faceting on grain growth was approached by model experiments in NiO–MgO. Grain growth rates were found to be 10 times higher in NiO compared to MgO. As the self-diffusion acoefficients differ by a factor of 250, grain growth in NiO is unexpectedly slow compared to MgO. Recently, the mo...
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Personal Name(s): | Rheinheimer, Wolfgang (Corresponding author) |
---|---|
Lowing, David / Blendell, John E. | |
Contributing Institute: |
Werkstoffsynthese und Herstellungsverfahren; IEK-1 |
Published in: | Scripta materialia, 178 (2020) S. 236 - 239 |
Imprint: |
Amsterdam [u.a.]
Elsevier Science
2020
|
DOI: |
10.1016/j.scriptamat.2019.11.034 |
Document Type: |
Journal Article |
Research Program: |
ohne Topic |
Link: |
Get full text Published on 2019-11-26. Available in OpenAccess from 2021-11-26. |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1016/j.scriptamat.2019.11.034 in citations.
The impact of faceting on grain growth was approached by model experiments in NiO–MgO. Grain growth rates were found to be 10 times higher in NiO compared to MgO. As the self-diffusion acoefficients differ by a factor of 250, grain growth in NiO is unexpectedly slow compared to MgO. Recently, the movement of steps was identified as the atomic mechanism of grain boundary migration. According to the equilibrium crystal shape, grain boundaries in NiO are more faceted. The faceted grain boundaries of NiO have fewer steps at the grain boundaries resulting in a relatively lower mobility. |