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    • 3. 发明授权
    • Vitreous china, method for preparing the vitreous china, sanitary-ware
produced therefrom and glaze therefor
    • 玻璃瓷,制备玻璃瓷的方法,由其制造的卫生洁具和釉料
    • US5372976A
    • 1994-12-13
    • US100962
    • 1993-08-03
    • Akio MatsumotoToshiya Nishikawa
    • Akio MatsumotoToshiya Nishikawa
    • C03C3/083C03C8/14C03C10/02C03C10/04C03C14/00C04B33/34C04B35/18C04B41/86E03D9/00C03C1/00C04B33/24
    • C03C14/004C03C8/14C03C2214/04
    • A vitreous china comprises, as principal components, 25 to 70% by weight of a glass phase and 75 to 30% by weight of a crystalline phase, the glass phase comprising, as principal chemical components, 4 to 12% by weight of K.sub.2 O+Na.sub.2 O, 50 to 75% by weight of SiO.sub.2 and 17 to 40% by weight of Al.sub.2 O.sub.3 while the total amount of the glass phase is defined to be 100% by weight, and the crystalline phase comprising, as principal mineral components, 10 to 60% by weight of .alpha.-alumina, 0 to 20% by weight of quartz and 2 to 20% by weight of mullite while the total amount of the vitreous china is defined to be 100% by weight. The vitreous china and the method for preparing the same may permit the marked improvement of the mechanical strength of the vitreous china. The mechanical strength may be improved without adversely affecting other physical properties (such as high temperature deformation, resistance to thermal shock and firing temperature). This vitreous china can be applied to sanitary-wares, large-sized pottery plates and various kinds of engineering ceramics. Moreover, the present invention provides a glaze which has excellent compatibility with vitreous china having high alumina contents and which is thus applied to a large-sized product formed from vitreous china having such a high alumina content.
    • 作为主要组分,玻璃相以玻璃相为25〜70重量%,结晶相为75〜30重量%,玻璃相以主要化学成分为4〜12重量%的K 2 O + Na 2 O,50〜75重量%的SiO 2和17〜40重量%的Al 2 O 3,而玻璃相的总量为100重量%,结晶相为10〜60重量份 重量%的α-氧化铝,0〜20重量%的石英和2〜20重量%的莫来石,而玻璃瓷的总量被定义为100重量%。 玻璃瓷及其制备方法可以显着提高玻璃瓷的机械强度。 可以改善机械强度,而不会不利地影响其他物理性能(例如高温变形,耐热冲击和烧结温度)。 该玻璃瓷可应用于卫生洁具,大型陶瓷板及各种工程陶瓷。 此外,本发明提供了一种与具有高氧化铝含量的玻璃陶瓷具有优异相容性的釉料,因此适用于由具有高氧化铝含量的玻璃陶瓷形成的大尺寸产品。