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3D Mapping of Subsurface Cracks in Alumina Using FIB

Published online by Cambridge University Press:  17 March 2011

B.J. Inkson ,
H.Z. Wu ,
T. Steer  and
G. Möbus
B.J. Inkson
Affiliation:
Dept. of Materials, Oxford University, Parks Road, Oxford, U.K.beverley.inkson@materials.ox.ac.uk, http://users.ox.ac.uk/∼inkson
H.Z. Wu
Affiliation:
Dept. of Materials, Oxford University, Parks Road, Oxford, U.K.beverley.inkson@materials.ox.ac.uk, http://users.ox.ac.uk/∼inkson
T. Steer
Affiliation:
Dept. of Materials, Oxford University, Parks Road, Oxford, U.K.beverley.inkson@materials.ox.ac.uk, http://users.ox.ac.uk/∼inkson
G. Möbus
Affiliation:
Dept. of Materials, Oxford University, Parks Road, Oxford, U.K.beverley.inkson@materials.ox.ac.uk, http://users.ox.ac.uk/∼inkson
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Abstract

A new method has been developed to map cracks in 3D using focused ion beam (FIB) microscopy. Using the FIB, many parallel 2D slices are cut in the specimen. Imaging each 2D slice down several directions enables the 3D co-ordinates of features in the slice to be determined. Computer alignment and reconstruction of the 2D slices generates a 3D data set of the analysed zone. The 3D mapping method has been applied to the analysis of the cracks around an indentation site in a Al2O3-5vol.%SiC nanocomposite. This reveals the 3D location and morphology of radial and deep lateral cracks at the indent periphery, surface localised crack clusters, and a crack deficient zone close to the indent centre.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 649: Symposium Q – Fundamentals of Nanoindentation & Nanotribology II , 2000 , Q7.7
Copyright
Copyright © Materials Research Society 2001

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References

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