C - Chemistry – Metallurgy – 23 – C
Patent
C - Chemistry, Metallurgy
23
C
C23C 20/08 (2006.01) B01J 21/06 (2006.01) B22F 1/02 (2006.01) C01F 11/18 (2006.01) C01G 23/04 (2006.01) C09C 1/02 (2006.01) C09C 3/06 (2006.01) C23C 18/00 (2006.01)
Patent
CA 2462487
A titania film-coated powder comprising a base particle having provided thereon at least one titania film, wherein the base particle is coated with the titania film by suspending the base particle in a buffer solution having a pH of from 7.0 to 12.0 to obtain a suspension, and adding a hydrogen peroxide-ammonia mixture solution containing peroxotitanic acid to the suspension to thereby regulate a titania deposition reaction induced by decomposition of the peroxotitanic acid in the suspension.
L'invention concerne un procédé de production d'une poudre ayant une poudre de base sur laquelle est formé au moins un film de titane, qui consiste à diffuser la poudre de base dans une solution tampon, dont le pH se situe entre 7,0 et 12,0, en vue de préparer une suspension, à ajouter à ladite suspension une solution mélangée d'hydrogène ammoniac peroxyde contenant des gouttes d'acide de peroxotitane afin de faire précipiter le titane de manière contrôlée par le biais de la décomposition de l'acide de peroxotitane dans ladite suspension et d'appliquer un film de titane sur ladite couche de base.
Atarashi Takafumi
Kishimoto Akira
Nakatsuka Katsuto
Nakatsuka Katsuto
Nittetsu Mining Co. Ltd.
Riches Mckenzie & Herbert Llp
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