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Formation of controlled alumina films using Supercritical Fluids Chemical Deposition for electronic and telecommunication devices

Published online by Cambridge University Press:  15 March 2011

C. Aymonier ,
M. Lamirand-Majimel ,
C. Bousquet ,
C. Moncade ,
F. Cansell ,
M. Maglione ,
C. Ellisalde ,
J.-M. Heintz  and
J.-F. Silvain
C. Aymonier
Affiliation:
Institut de Chimie de la Matière Condensée de Bordeaux / Centre National de la Recherche Scientifique, Université Bordeaux 1, 87 Avenue du Dr Albert Schweitzer, 33608 Pessac Cedex, FRANCE Ecole Nationale Supérieure de Chimie et de Physique de Bordeaux, 16 avenue Pey Berland, 33607 Pessac Cedex, FRANCE
M. Lamirand-Majimel
Affiliation:
Institut de Chimie de la Matière Condensée de Bordeaux / Centre National de la Recherche Scientifique, Université Bordeaux 1, 87 Avenue du Dr Albert Schweitzer, 33608 Pessac Cedex, FRANCE Ecole Nationale Supérieure de Chimie et de Physique de Bordeaux, 16 avenue Pey Berland, 33607 Pessac Cedex, FRANCE
C. Bousquet
Affiliation:
Institut de Chimie de la Matière Condensée de Bordeaux / Centre National de la Recherche Scientifique, Université Bordeaux 1, 87 Avenue du Dr Albert Schweitzer, 33608 Pessac Cedex, FRANCE
C. Moncade
Affiliation:
Institut de Chimie de la Matière Condensée de Bordeaux / Centre National de la Recherche Scientifique, Université Bordeaux 1, 87 Avenue du Dr Albert Schweitzer, 33608 Pessac Cedex, FRANCE
F. Cansell
Affiliation:
Institut de Chimie de la Matière Condensée de Bordeaux / Centre National de la Recherche Scientifique, Université Bordeaux 1, 87 Avenue du Dr Albert Schweitzer, 33608 Pessac Cedex, FRANCE Ecole Nationale Supérieure de Chimie et de Physique de Bordeaux, 16 avenue Pey Berland, 33607 Pessac Cedex, FRANCE
M. Maglione
Affiliation:
Institut de Chimie de la Matière Condensée de Bordeaux / Centre National de la Recherche Scientifique, Université Bordeaux 1, 87 Avenue du Dr Albert Schweitzer, 33608 Pessac Cedex, FRANCE
C. Ellisalde
Affiliation:
Institut de Chimie de la Matière Condensée de Bordeaux / Centre National de la Recherche Scientifique, Université Bordeaux 1, 87 Avenue du Dr Albert Schweitzer, 33608 Pessac Cedex, FRANCE
J.-M. Heintz
Affiliation:
Institut de Chimie de la Matière Condensée de Bordeaux / Centre National de la Recherche Scientifique, Université Bordeaux 1, 87 Avenue du Dr Albert Schweitzer, 33608 Pessac Cedex, FRANCE Ecole Nationale Supérieure de Chimie et de Physique de Bordeaux, 16 avenue Pey Berland, 33607 Pessac Cedex, FRANCE
J.-F. Silvain
Affiliation:
Institut de Chimie de la Matière Condensée de Bordeaux / Centre National de la Recherche Scientifique, Université Bordeaux 1, 87 Avenue du Dr Albert Schweitzer, 33608 Pessac Cedex, FRANCE
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Abstract

Alumina is one of the most widely used oxide ceramic material. It exists in many metastable forms, among which is the thermodynamically stable α phase, obtained upon severe thermal treatment. Sintering of alumina is generally performed in several stages: first, phase transitions towards the stable α phase followed by its densification. The first step is strongly dependent on the crystallinity of initial powders. By controlling this parameter, it is possible to optimize the sintering properties, in particular by decreasing the phase transition temperature. This effect has been studied for alumina elaborated in sub- and supercritical fluid media. This work highlights the possibilities to obtain, according to the nature of the fluid, different kinds of transition alumina: boehmite AlO(OH) or amorphous Al2O3. The sintering processes of these powders all lead to α-alumina, however, different microstructures and densities can be obtained. A significant shift towards lower λ/α phase transition temperature is also observed when amorphous alumina is considered, compared to boehmite. The transfer of this know-how to the design of core-shell nanoparticles and film deposition onto copper heat sinks is investigated to develop nanostructured ceramics for telecommunications and electronics.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1113: Symposium F – Low-Cost Solution-Based Deposition of Inorganic Films for Electronic/Photonic Devices , 2008 , 1113-F04-03
Copyright
Copyright © Materials Research Society 2009

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References

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