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Structure and Properties of Single Crystal Al2O3 Implanted with Chromium and Zirconium

Published online by Cambridge University Press:  15 February 2011

C. J. Mchargue ,
H. Naramoto ,
B. R. Appleton ,
C. W. White  and
J. M. Williams
C. J. Mchargue
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, TN 37830
H. Naramoto
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, TN 37830
B. R. Appleton
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, TN 37830
C. W. White
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, TN 37830
J. M. Williams
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, TN 37830
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Abstract

Single crystals of Al2O3 were implanted with chromium and zirconium to fluences of 1 × 1016 to 1 × 1017 ions cm−2. Rutherford backscattering-channeling studies showed the surface layers to be damaged but crystalline with the implanted ions randomly distributed. The microhardness and indentation fracture toughness were higher for the random solutions than for conventionally formed solid solutions. Changes in structure and properties caused by annealing in air at temperatures up to 1800°C were studied.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 7 , 1981 , 147
Copyright
Copyright © Materials Research Society 1982

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Footnotes

*

Research sponsored by the Division of Materials Sciences, U.S. Department of Energy, under contract W–7405–eng–26 with the Union Carbide Corporation.

ǂ

On assignment from Physics Division, JAERI, Japan.

References

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