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Study on the anisotropic growth of rod-like Yb α-SiAlON crystals prepared by combustion synthesis

Published online by Cambridge University Press:  01 November 2004

Guanghua Liu ,
Kexin Chen ,
Heping Zhou  and
J.M.F. Ferreira
Guanghua Liu
Affiliation:
Department of Material Science and Engineering, State Key Laboratory of New Ceramics and Fine Processing, Tsinghua University, Beijing 100084, People’s Republic of China
Kexin Chen
Affiliation:
Department of Material Science and Engineering, State Key Laboratory of New Ceramics and Fine Processing, Tsinghua University, Beijing 100084, People’s Republic of China
Heping Zhou
Affiliation:
Department of Material Science and Engineering, State Key Laboratory of New Ceramics and Fine Processing, Tsinghua University, Beijing 100084, People’s Republic of China
J.M.F. Ferreira
Affiliation:
Department of Ceramics and Glass Engineering, CICECO, University of Aveiro,Aveiro 3810-193, Portugal
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Abstract

In this paper, single-phase Yb α-SiAlON powder with rod-like crystals was fabricated by combustion synthesis. The microstructural development of the rod-like α-SiAlON crystals was studied, and anisotropic grain growth was observed. Furthermore, the growth mechanism of the rod-like α-SiAlON crystals was investigated, and the experimental results indicated that during the anisotropic grain growth, the fast growth plane was the basal plane in the hexagonal crystal lattice.

Keywords

Grain growthSelf-propagating high-temperature synthesis (SHS)Texture
Type
Articles
Information
Journal of Materials Research , Volume 19 , Issue 11 , November 2004 , pp. 3408 - 3413
Copyright
Copyright © Materials Research Society 2004

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References

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