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CRYSTALLIZATION OF GRAIN-BOUNDARY PHASES IN SILICON-NITRIDE AND SIALON CERAMICS
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UNSPECIFIED (1994) CRYSTALLIZATION OF GRAIN-BOUNDARY PHASES IN SILICON-NITRIDE AND SIALON CERAMICS. In: International Conference on Silicon Nitride-Based Ceramics, STUTTGART, GERMANY, OCT 04-06, 1993. Published in: SILICON NITRIDE 93, 89-9 pp. 333-337. ISBN 0-87849-668-8. ISSN 0252-1059.
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Abstract
A survey is presented of the principles and practice of tailoring: sintering liquid composition and processing cycle to enable crystallisation of intergranular phases in silicon nitride and sialon ceramics, Critical features in sialon ceramics are the O/N balance in residual glasses and post-sintering heal-treatment temperatures to enable nucleation of either intermediate phases at constant composition or oxide phases with re-partitioning of non stoichiometric components in beta' or alpha' solid solutions. Crystallisation of disilicate phases in non sialon compositions exemplifies a problem in control of polymorphs with differing atomic volumes. Crystallisation of intergranular phases has an influence mainly on high-temperature mechanical and environmental behaviour of these ceramics.
Item Type: | Conference Item (UNSPECIFIED) | ||||
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Subjects: | T Technology > TP Chemical technology T Technology > TA Engineering (General). Civil engineering (General) |
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Series Name: | KEY ENGINEERING MATERIALS | ||||
Journal or Publication Title: | SILICON NITRIDE 93 | ||||
Publisher: | TRANS TECH PUBLICATIONS | ||||
ISBN: | 0-87849-668-8 | ||||
ISSN: | 0252-1059 | ||||
Editor: | Hoffmann, MJ and Becher, PF and Petzow, G | ||||
Official Date: | 1994 | ||||
Dates: |
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Volume: | 89-9 | ||||
Number of Pages: | 5 | ||||
Page Range: | pp. 333-337 | ||||
Publication Status: | Published | ||||
Title of Event: | International Conference on Silicon Nitride-Based Ceramics | ||||
Location of Event: | STUTTGART, GERMANY | ||||
Date(s) of Event: | OCT 04-06, 1993 |
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