C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
25/140, 261/24,
C04B 35/599 (2006.01) C04B 35/64 (2006.01) C04B 41/81 (2006.01) E21B 10/58 (2006.01)
Patent
CA 2334547
A continuous process for the manufacture of a ceramic sintered comopact wherein the process comprises the steps of: forming a green compact from a powder mixture comprising a first component comprising compounds which contain elements of silicon, aluminum, oxygen and nitrogen; and the powder mixture further comprising a second component comprising a compound of at least one element selected from the group consisting of yttrium, scandium, cerium, lanthanum and the metals of the lanthanide series, and the second component comprising between 0.1 and 10 weight percent of the powder mixture; heat treating the green compact wherein the heat treatment comprises continously passing the green compact through at least one heating zone so as to produce a sintered compact.
L'invention concerne un procédé en continu de fabrication d'un compact fritté céramique consistant à former un compact vert à partir d'un mélange sous forme de poudre renfermant un premier composant contenant des composés qui comprennent des éléments de silicium, aluminium, oxygène et azote. Le mélange sous forme de poudre comprend ensuite un second composant renfermant un composé d'au moins un élément sélectionné dans le groupe formé d'yttrium, scandium, cérium, lanthane et de métaux lanthanides. Ce second composant comprend entre 0,1 et 10 % en poids du mélange sous forme de poudre. Le procédé consiste ensuite à traiter thermiquement le compact vert. Pour ce faire, il faut passer le compact vert à travers au moins une zone de chauffage de manière à produire un compact fritté.
Kennametal Inc.
Smart & Biggar
LandOfFree
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