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Direct evidence for compressive elastic strain at ground surfaces of nanocomposite ceramics

Abstract:

High-resolution grazing incidence x-ray powder diffraction has been used to provide direct evidence for the existence of a uniform compressive strain close to the surface of ground alumina SiC nanocomposites. No such strain is found in ground surfaces of single-phase alumina or polished surfaces of nanocomposite. The strain in the ground nanocomposite is found to be perpendicular to the grinding direction and disappears on annealing at 1250 °C. Such a compressive stress provides a mechanism f...

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Publication status:
Published

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Publisher copy:
10.1063/1.1862754

Authors


Tanner, BK More by this author
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Institution:
University of Oxford
Department:
Oxford, MPLS, Materials
Journal:
APPLIED PHYSICS LETTERS
Volume:
86
Issue:
6
Pages:
1-3
Publication date:
2005-02-07
DOI:
ISSN:
0003-6951
URN:
uuid:d19b4400-eb58-4a2d-92c6-8aed7742c186
Source identifiers:
6520
Local pid:
pubs:6520
Language:
English

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