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Residual stress fields in sol-gel-derived thin TiO2 layers

Published online by Cambridge University Press:  31 January 2011

D. H. J. Teeuw ,
M. de Haas  and
J.Th. M. De Hosson
D. H. J. Teeuw
Affiliation:
Laboratory of Applied Physics, Materials Science Center and Netherlands Institute for Metals Research, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
M. de Haas
Affiliation:
Laboratory of Applied Physics, Materials Science Center and Netherlands Institute for Metals Research, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
J.Th. M. De Hosson
Affiliation:
Laboratory of Applied Physics, Materials Science Center and Netherlands Institute for Metals Research, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
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Abstract

This paper discusses the induction of residual stresses during the curing process of thin titania layers, which are derived using a sol-gel process. During this process, stresses may build up in the spinning stage, the drying stage, and the consolidation stage. The magnitude and character of these stresses depend heavily on the morphology of the layers in the various stages and the processing conditions. Dried layers are densified using two different processes, conventional furnace heating and laser heating. X-ray analysis and scanning electron microscopy are used as tools to study crystallization, grain growth, phase transformation, and the evolution of residual stress fields in the thin titania layers. Through an extensive study of the residual stress state in the layers, more insight is gained in the evolution of stresses during the curing process of sol-gel-derived thin titania layers.

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Articles
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Journal of Materials Research , Volume 14 , Issue 5 , May 1999 , pp. 1896 - 1903
Copyright
Copyright © Materials Research Society 1999

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