期刊
JOURNAL OF MATERIALS RESEARCH
卷 16, 期 7, 页码 1916-1918出版社
MATERIALS RESEARCH SOCIETY
DOI: 10.1557/JMR.2001.0262
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Precise control of porosity and microstructure of porous ceramics is essential. This paper describes a method for the preparation of porous ceramics with porosity from 0.0 to 0.4. The ceramics were prepared via hot pressing a powder mixture to a definite dimension, and the porosity was easily adjusted by the powder amount. As examples, porous Si3N4 or SiC ceramics were produced by powder mixtures that contained Si3N4 or SiC and a sintering additive of oxide. It was demonstrated that the present method is advantageous for producing ceramics with controllable porosity and microstructure.
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