Al2o3-la2o3-y2o3-mgo ceramics, and methods of making the same

Details Al2o3-la2o3-y2o3-mgo ceramics, and methods of making the same Al2o3-la2o3-y2o3-mgo ceramics, and methods of making the same

C - Chemistry, Metallurgy

03

C

C03C 14/00 (2006.01) C03C 3/12 (2006.01) C03C 10/00 (2006.01) C04B 35/10 (2006.01) C04B 35/111 (2006.01) C04B 35/44 (2006.01) C09K 3/14 (2006.01)

Patent

CA 2515183

Al2O3-La2O3-Y2O3-MgO ceramics (including glasses, crystalline ceramics, and glass-ceramics) and methods of making the same. Ceramics according to the present invention can be made, formed as, or converted into glass beads, articles (e.g., plates), fibers, particles, and thin coatings. The particles and fibers are useful, for example, as thermal insulation, filler, or reinforcing material in composites (e.g., ceramic, metal, or polymeric matrix composites). The thin coatings can be useful, for example, as protective coatings in applications involving wear, as well as for thermal management. Some embodiments of ceramic particles according to the present invention can be are particularly useful as abrasive particles.

L'invention concerne de la céramique Al¿2?O¿3?-La¿2?O¿3?-Y¿2?O¿3?-MgO (notamment du verre, de la céramique cristalline et de la vitrocéramique) ainsi que des méthodes de fabrication de celle-ci. La céramique de l'invention peut être fabriquée, formée, ou convertie en billes de verre, en articles (par exemple, des assiettes), en fibres, en particules, et en revêtements minces. Les particules et les fibres susmentionnées sont utiles, par exemple, en tant qu'isolation thermique, que charge, ou que matériau de renforcement dans des composites (par exemple, composites matriciels polymères, céramiques ou métalliques). Les revêtements minces peuvent être utiles, par exemple, en tant que revêtements de protection dans des applications impliquant l'usure, ainsi que la gestion thermique. Certains modes de réalisation de particules céramiques de l'invention peuvent être particulièrement utiles en tant que particules abrasives.

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