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On Devitrification of Monticellite (CaMgSiO4) Films Grown on (001)-Oriented Single-Crystal MgO.

Published online by Cambridge University Press:  02 July 2020

Svetlana V. Yanina ,
Matthew T. Johnson ,
Zhigang Mao  and
C. Barry Carter
Svetlana V. Yanina
Affiliation:
Department of Chemistry University of Minnesota, 421 Washington Ave., SE, Minneapolis, MN, 55455-0132
Matthew T. Johnson
Affiliation:
Department of Chemical Engineering and Materials Science, University of Minnesota, 421 Washington Ave., SE, Minneapolis, MN, 55455-0132
Zhigang Mao
Affiliation:
Department of Chemical Engineering and Materials Science, University of Minnesota, 421 Washington Ave., SE, Minneapolis, MN, 55455-0132
C. Barry Carter
Affiliation:
Department of Chemical Engineering and Materials Science, University of Minnesota, 421 Washington Ave., SE, Minneapolis, MN, 55455-0132
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Silicate glasses are the most common constituents of intergranular phases which can be found in liquid-phase sintered ceramics [1]. Silicates are known to influence the structure of ceramic interfaces which, in turn, frequently affect mechanical properties of ceramic materials [2]. In earlier studies of silicate glasses on single-crystal alumina Ramamurthy et al [3] and Mallamaci [4] showed that the morphology of dewetted glass films and the mechanism of devitrification depend on the crystallographic orientation of the substrate surface. In continuation of these studies, results are presented on the dewetting behavior of monticellite (CaMgSi04) in contact with the (OOl)-oriented surface of single-crystal MgO. Due to the simplicity of sample preparation and availability of 3- dimensional topographic information, Atomic Force Microscopy (AFM) was used for surface characterization. These AFM results are complemented by transmission electron microscopy (TEM) and scanning electron microscopy (SEM) data on the chemical composition and the structure of the glass-substrate interface.

Type
Microscopy of Ceramics and Minerals
Information
Microscopy and Microanalysis , Volume 4 , Issue S2: Proceedings: Microscopy & Microanalysis '98, Microscopy Society of America 56th Annual Meeting, Microbeam Analysis Society 32nd Annual Meeting, Atlanta, Georgia July 12-16, 1998 , July 1998 , pp. 590 - 591
Copyright
Copyright © Microscopy Society of America

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References

References:

1.Liu, C., Komarneni, S., Roy, A., J. Amer. Ceram. Soc, 75 (1992), 2665CrossRefGoogle Scholar
2.Clarke, D. R., “Surfaces and Interfaces of Ceramic Materials” (1989), 59Google Scholar
3.Ramamurthy, S., Hebert, B. C., Carter, C. B., Schmalzried, H., Mat. Res. Soc. Symp. Proc, 398 (1996), 295CrossRefGoogle Scholar
4.Mallamaci, M., Ph. D. Thesis, Cornell U. (1995)Google Scholar
5. This Research has been supported by the U. S. Department of Energy under Grant No DE-FG02-92ER45465. MTJ acknowledges the support of the Center of Interfacial Engineering, an NSF Engineering Research Center at the University of Minnesota.Google Scholar