Microstructural development of Nd, Gd and Yb-doped alpha '/beta ' sialons
UNSPECIFIED (2000) Microstructural development of Nd, Gd and Yb-doped alpha '/beta ' sialons. In: 2nd International Symposium on Nitrides, JUN 09-11, 1998, LIMRICK, IRELAND.Full text not available from this repository.
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)|
|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|
|Editor:||Hampshire, S and Pomeroy, MJ|
|Number of Pages:||6|
|Page Range:||pp. 225-230|
|Title of Event:||2nd International Symposium on Nitrides|
|Location of Event:||LIMRICK, IRELAND|
|Date(s) of Event:||JUN 09-11, 1998|
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