期刊
SCRIPTA MATERIALIA
卷 53, 期 6, 页码 663-667出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2005.05.037
关键词
rapid solidification; polymer processing; ceramic matrix composites (CMC); high-resolution electron microscopy (HREM); nanocrystalline materials
The spark plasma sintering technique was used to consolidate amorphous Si-C-N powder to obtain polycrystalline Si3N4/SiC ceramic composites. With decreasing additive content, the consolidation of the materials became increasingly dependent on solid-state sintering. The microstructure underwent a transition from a microcrystalline matrix with nanocrystalline second phase (micro-nano) to a nanocrystalline matrix with nanocrystalline second phase (nano-nano) when the yttria content was lowered to 3 wt.%. (c) 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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