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Microstructural development of Nd, Gd and Yb-doped alpha '/beta ' sialons
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UNSPECIFIED (2000) Microstructural development of Nd, Gd and Yb-doped alpha '/beta ' sialons. In: 2nd International Symposium on Nitrides, LIMRICK, IRELAND, JUN 09-11, 1998. Published in: NITRIDES AND OXYNITRIDES, 325-3 pp. 225-230. ISBN 0-87849-850-8. ISSN 0255-5476.
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Abstract
Rare-earth doped sialons have been studied to compare the effects of different stabilising cations (Nd, Gd and Yb) on the phase content and microstructures of alpha'/beta' composites, and on the degree of alpha'-->beta' transformation following heat-treatment of the samples at 1450 degrees C. Heat-treatment of the Gd and Yb sialons resulted in crystallisation of the residual glassy phase into Gd-aluminate or Yb-garnet, respectively, with very little transformation of alpha' to beta' taking place. In contrast, heat-treatment of the Nd sialons readily promoted the transformation of alpha' to beta', with a corresponding evolution of Nd-Aluminate or Nd-Wollastonite. In addition, beta-Si3N4 additions were carried out to evaluate its effectiveness as a seeding aid for beta-sialon formation, such seeding mechanisms were effective in the Nd system but did not have a significant influence on beta sialon development in the Gd and Yb systems.
Item Type: | Conference Item (UNSPECIFIED) | ||||
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Subjects: | T Technology > TA Engineering (General). Civil engineering (General) | ||||
Series Name: | MATERIALS SCIENCE FORUM | ||||
Journal or Publication Title: | NITRIDES AND OXYNITRIDES | ||||
Publisher: | TRANS TECH PUBLICATIONS LTD | ||||
ISBN: | 0-87849-850-8 | ||||
ISSN: | 0255-5476 | ||||
Editor: | Hampshire, S and Pomeroy, MJ | ||||
Official Date: | 2000 | ||||
Dates: |
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Volume: | 325-3 | ||||
Number of Pages: | 6 | ||||
Page Range: | pp. 225-230 | ||||
Publication Status: | Published | ||||
Title of Event: | 2nd International Symposium on Nitrides | ||||
Location of Event: | LIMRICK, IRELAND | ||||
Date(s) of Event: | JUN 09-11, 1998 |
Data sourced from Thomson Reuters' Web of Knowledge
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