C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
18/576, 75/1.2
C04B 35/80 (2006.01) C04B 35/622 (2006.01) D01F 9/08 (2006.01)
Patent
CA 2009605
23 SiO2- AND ZrO2-BASED CERAMIC FIBERS AND PROCESS FOR THE PREPARATION THEREOF ABSTRACT The present invention relates to ZrO2- and SiO2- based ceramic fibers in which the weight ratio between SiO2 and ZrO2 is comprised between 99 and 0.7. The tetragonal ZrO2 phase is stable at temperatures comprised between 0 and 1500 °C. The process comprises the preparation of: a solution of Zr(OR1)4, where R1 is an alkyl or aryl, Si(OR2)4, where R2 is alkyl or aryl, an organic solvent and an acid. Vapor-phase water is bubbled in said solution, then the obtained solution is drawn and the fibers thus obtained are heated to obtain the crystallization of ZrO2 and SiO2.
Brenna Umberto
Carturan Giovanni
Dal Maschio Robert
Del Felice Gianmarco
Mirto Mozzon
Brenna Umberto
Carturan Giovanni
Dal Maschio Robert
Del Felice Gianmarco
Mirto Mozzon
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