Cost-effective fabrication of porous alpha-SiAlON bonded beta-SiAlON ceramics
authors Xu, X; Fu, RL; Chen, KX; Ferreira, JMF
nationality International
journal MATERIALS LETTERS
author keywords sialon; ceramics; microstructure; porosity
keywords SILICON-NITRIDE CERAMICS; MICROSTRUCTURE; CRYSTALS; SI3N4
abstract Porous sialon ceramics have been cost-effectively prepared by pressureless sintering from a mixture of elongated SHS beta-sialon powders with an alpha-sialon precursor composition composed Of alpha-Si3N4, AlN, Y2O3 and Al2O3. The obtained porous sialon ceramics exhibited low shrinkage and homogeneous pore size distribution. The results of X-ray diffraction and scanning electron microscopy showed that a uniform microstructure with elongated and intermingled beta-SiAlON grains, which were strongly connected by alpha-SiAlON phase, has been obtained. (c) 2005 Elsevier B.V. All rights reserved.
publisher ELSEVIER SCIENCE BV
issn 0167-577X
year published 2005
volume 59
issue 19-20
beginning page 2601
ending page 2604
digital object identifier (doi) 10.1016/j.matlet.2005.03.048
web of science category Materials Science, Multidisciplinary; Physics, Applied
subject category Materials Science; Physics
unique article identifier WOS:000230275100050
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journal impact factor 3.204
5 year journal impact factor 2.785
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