BETA-ALUMINUM OXIDE CERAMICS OBTAINABLE BY EXTRUSION OF A MIXTURE THAT CONTAINS A SODIUM COMPOUND

• Main Authors: DURR ANNA KATHARINA, EICHHOLZ CHRISTIAN, FREITAG KATRIN, MEUER STEFAN, HUBER GUNTHER
• Format: Patent
• Language: English; Korean
• Published: 24.05.2016
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; METALLURGY; PERFORMING OPERATIONS; REFRACTORIES; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; SLAG; TRANSPORTING; TREATMENT OF NATURAL STONE; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

본 발명은 세라믹 성형 제품을 압출에 의해 제조하기 위한, A) 55 내지 90 중량%의 알루미늄 옥사이드; B) pH 7 및 20℃에서 300 g/L 이하의 물 중 용해도를 갖고, 열적으로, 고체만의 나트륨 옥사이드로 사실상 배타적으로 전환될 수 있는, 5 내지 35 중량%의 나트륨 화합물; C) 마그네슘 옥사이드, 마그네슘 카보네이트, 마그네슘 니트레이트, 리튬 옥사이드, 리튬 카보네이트 및 리튬 니트레이트로 이루어진 군으로부터 선택되는, 0 내지 15 중량%의 마그네슘 화합물 및/또는 리튬 화합물; 및 D) 0 내지 30 중량%의 지르코늄 다이옥사이드를 포함하는 조성물의 용도에 관한 것이다. Use of a composition comprising A) from 55 to 90% by weight of aluminum oxide, B) from 5 to 35% by weight of a sodium compound which at a pH of 7 at 20° C. has a solubility in water of ≦300 g/l and can be converted by thermal means virtually exclusively into sodium oxide as only solid, C) from 0 to 15% by weight of a magnesium compound and/or a lithium compound selected from the group consisting of: magnesium oxide, magnesium carbonate, magnesium nitrate, lithium oxide, lithium carbonate, lithium nitrate and D) from 0 to 30% by weight of zirconium dioxide for producing a shaped ceramic body by extrusion.