This work was supported by the Swedish Research Council through grant 621-2002-4299. We thank Z. Zhao and M. Heinonen for their experimental assistance.
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Communication
Formidable Increase in the Superplasticity of Ceramics in the Presence of an Electric Field†
Article first published online: 16 JUN 2003
DOI: 10.1002/adma.200304863
Copyright © 2003 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Additional Information
How to Cite
Shen, Z., Peng, H. and Nygren, M. (2003), Formidable Increase in the Superplasticity of Ceramics in the Presence of an Electric Field. Adv. Mater., 15: 1006–1009. doi: 10.1002/adma.200304863
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Publication History
- Issue published online: 16 JUN 2003
- Article first published online: 16 JUN 2003
- Manuscript Accepted: 11 MAR 2003
- Manuscript Received: 14 JAN 2003
- Abstract
- References
- Cited By
Keywords:
- Ceramics;
- Microstructure;
- Silicon nitrides;
- Superplasticity
The ductility of silicon nitride-based ceramics is dramatically enhanced in the presence of a pulsed electric field/current that induces movement of the charged species present in the grain boundary glassy/liquid phase, and thereby promotes grain sliding along the grain boundaries. The Figure shows an α-sialon component before (right) and after (left) deformation.