Electrically conductive fibers of ti4o7 and ti5o9

Details Electrically conductive fibers of ti4o7 and ti5o9 Electrically conductive fibers of ti4o7 and ti5o9

C - Chemistry, Metallurgy

01

G

C01G 23/00 (2006.01) C01G 27/02 (2006.01) C04B 33/32 (2006.01)

Patent

CA 2512469

Solid, shaped and fired fibers of Ti4O7 and Ti5O9 are made by firing TiO2 fibers in a reducing atmosphere. In a first aspect, the TiO2 fibers are made by extruding into air a viscous TiO2 gel and heat treating the resulting green fibers to remove solvent, decompose and to volatilize undesired constituents to form electrically conductive, refractory fibers of Ti4O7 and Ti5O9 . In a second aspect, solid, shaped and fired fibers of Ti4O7 and Ti5O9 are made by firing extruded fibers from mixtures of TiO2.

L'invention concerne des fibres solides, formées et cuites de Ti¿4?O¿7? et de Ti¿5?O¿9? fabriquées par cuisson de fibres de TiO¿2? dans une atmosphère réductrice. Selon un premier aspect, les fibres de TiO¿2? sont fabriquées par extrusion dans de l'air d'un gel de TiO¿2? et par traitement thermique des fibres brutes résultantes de manière à extraire le solvant et à décomposer et volatiliser les constituants indésirables, d'où la formation de fibres réfractaires électroconductrices de Ti¿4?O¿7? et de Ti¿5?O¿9?. Selon un second aspect, des fibres solides, formées et cuites de Ti¿4?O¿7? and Ti¿5?O¿9? sont fabriquées par cuisson de fibres extrudées à partir de mélanges de TiO¿2?.

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