METHOD OF MAKING COMPOSITE CERAMIC MATERIAL BASED ON SILICON NITRIDE AND BETA-EUCRYPTITE

PROBLEM TO BE SOLVED: To provide a method of making a composite ceramic material based on silicon nitride and beta-eucryptite.SOLUTION: There is provided a method of making a sintered composite ceramic material based on silicon nitride and beta-eucryptite. The method includes a step of preparing a f...

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Hauptverfasser: FANTOZZI GILBERT, PELLETANT AURELIEN, CHEVALIER JEROME, VITUPIER YANN, BLANCHARD LAURENT, REVERON HELEN
Format: Patent
Sprache:eng
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a method of making a composite ceramic material based on silicon nitride and beta-eucryptite.SOLUTION: There is provided a method of making a sintered composite ceramic material based on silicon nitride and beta-eucryptite. The method includes a step of preparing a first powdery mixture (101) composed of the powder of silicon nitride in a crystal form and the powder of first lithium aluminosilicate in a crystal form having a composition of (LiO)(AlO)(SiO). The combination of the molar fractions (x, y, z) in the composition of the lithium aluminosilicate is different from the combination of (1, 1, 2).