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Microwave Sintering of Nanocrystalline TiO2

Published online by Cambridge University Press:  28 February 2011

J. A. Eastman ,
K. E. Sickafus ,
J. D. Katz ,
S. G. Boeke ,
R. D. Blake ,
C. R. Evans ,
R. B. Schwarz  and
Y. X. Liao
J. A. Eastman
Affiliation:
Argonne National Laboratory, Materials Science Division, Argonne, IL 60439
K. E. Sickafus
Affiliation:
Los Alamos National Laboratory, Materials Science Division, Los Alamos, NM 87545
J. D. Katz
Affiliation:
Los Alamos National Laboratory, Materials Science Division, Los Alamos, NM 87545
S. G. Boeke
Affiliation:
Los Alamos National Laboratory, Materials Science Division, Los Alamos, NM 87545
R. D. Blake
Affiliation:
Los Alamos National Laboratory, Materials Science Division, Los Alamos, NM 87545
C. R. Evans
Affiliation:
Los Alamos National Laboratory, Materials Science Division, Los Alamos, NM 87545
R. B. Schwarz
Affiliation:
Los Alamos National Laboratory, Materials Science Division, Los Alamos, NM 87545
Y. X. Liao
Affiliation:
Argonne National Laboratory, Materials Science Division, Argonne, IL 60439
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Abstract

Nanocrystalline TiO2 compacts having initial approximate mean grain sizes of 14 nm and approximate green densities of 70% of theoretical were sintered by short-time exposure in a 2.45 GHz microwave cavity to maximum temperatures of 800, 1000 or 1200 ºC. Sample densities were measured before and after exposure to microwaves using Archimede's method. Transmission electron microscopy and x-ray diffraction were utilized to monitor grain growth and phase changes. Rutherford backscattering was used to monitor any changes in oxygen stoichiometry. The results of this study indicate that enhanced densification behavior is obtained for microwavesintered samples relative to samples sintered using conventional pressureless-sintering techniques.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 189: Symposium L – Microwave Processing of Materials II , 1990 , 273
Copyright
Copyright © Materials Research Society 1991

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References

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