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Microstructure and properties of porous silicon nitride ceramics prepared by gel-casting and gas pressure sintering

โœ Scribed by Chunrong Zou; Changrui Zhang; Bin Li; Siqing Wang; Feng Cao

Book ID
119322394
Publisher
Elsevier Science
Year
2013
Weight
638 KB
Volume
44
Category
Article
ISSN
0261-3069

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Highly porous Si 3 N 4 with macroscopically aligned pores were prepared by the unidirectional freeze casting process using liquid N 2 as refrigerant. The increased sintering temperature had no obvious influence on the porosity, but significantly promoted โฃ โ†’ โค-Si 3 N 4 phase transformation and the g