1. Cost-effective fabrication of porous α-SiAlON bonded β-SiAlON ceramics
- Author
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Xu, Xin, Fu, Renli, Chen, Kexin, and Ferreira, José M.F.
- Subjects
- *
MICROMECHANICS , *IRON metallurgy , *POWDER metallurgy , *SCANNING electron microscopy - Abstract
Abstract: Porous sialon ceramics have been cost-effectively prepared by pressureless sintering from a mixture of elongated SHS β-sialon powders with an α-sialon precursor composition composed of α-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 β-SiAlON grains, which were strongly connected by α-SiAlON phase, has been obtained. [Copyright &y& Elsevier]
- Published
- 2005
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