Glass enamel for automotive applications
    10.
    发明授权
    Glass enamel for automotive applications 有权
    玻璃搪瓷用于汽车应用

    公开(公告)号:US6105394A

    公开(公告)日:2000-08-22

    申请号:US228702

    申请日:1999-01-12

    摘要: The present invention provides lead and cadmium free glass enamel compositions. In one embodiment of the invention, glass frits include from about 0.1 percent by weight to about 15 percent by weight Nb.sub.2 O.sub.5, less than about 3 percent by weight alkali metal oxides, less than about 3 percent by weight ZnO, less than about 1 percent by weight B.sub.2 O.sub.3, and precursors from which Bi.sub.2 SiO.sub.5 can be crystallized upon firing, said precursors including Bi.sub.2 O.sub.3 and SiO.sub.2. Glass frits according to the present invention preferably further include up to about 25 percent by weight of coloring oxides, such as CeO.sub.2, Co.sub.3 O.sub.4, In.sub.2 O.sub.3, SnO, Cr.sub.2 O.sub.3, CuO, Fe.sub.2 O.sub.3, MnO.sub.2, MoO.sub.3, NiO, and V.sub.2 O.sub.5. By incorporating various amounts of coloring oxides into the compositions, the degree of crystallization and the rate at which crystallization occurs upon firing of the compositions can be controlled. Compositions according to the present invention form enamels upon firing which exhibit excellent resistance to acids, water, and alkalis as compared to enamels formed from prior art lead and cadmium free glass enamel compositions.

    摘要翻译: 本发明提供无铅和无镉玻璃搪瓷组合物。 在本发明的一个实施方案中,玻璃料包括约0.1重量%至约15重量%的Nb 2 O 5,小于约3重量%的碱金属氧化物,小于约3重量%的ZnO,小于约1重量% 重量B 2 O 3,以及Bi 2 SiO 5在烧制时可以结晶的前体,所述前体包括Bi 2 O 3和SiO 2。 根据本发明的玻璃料优选还包含高达约25重量%的着色氧化物,例如CeO 2,Co 3 O 4,In 2 O 3,SnO,Cr 2 O 3,CuO,Fe 2 O 3,MnO 2,MoO 3,NiO和V 2 O 5。 通过将不同量的着色氧化物加入到组合物中,可以控制结晶度和在组合物烧制时发生结晶的速率。 与现有技术的无铅和无镉玻璃搪瓷组合物形成的搪瓷相比,根据本发明的组合物在烧制时形成表现出对酸,水和碱的优异耐性的搪瓷。