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    • 13. 发明授权
    • Oxynitride glass-ceramics
    • 氧氮化物玻璃陶瓷
    • US4141739A
    • 1979-02-27
    • US896355
    • 1978-04-14
    • Kenneth ChyungRaja R. Wusirika
    • Kenneth ChyungRaja R. Wusirika
    • C03C3/11C03C10/00C03C3/22
    • C03C3/111C03C10/0009
    • The instant invention is directed to the production of glass-ceramic articles from thermally crystallizable glass compositions containing, by weight, about 40-85% SiO.sub.2 and 2.5-17% N as basic constituents and utilizing such modifiers as the alkali metals, the elements of Groups IIA and IIB of the Periodic Table, boron, and aluminum to obtain practical glass-forming compositions. In general, at N contents greater than about 3.5%, the predominant crystal phase developed in situ will customarily comprise "nitrogen mullite", silicon oxynitride (Si.sub.2 ON.sub.2), and/or .beta.'--Si.sub.3 N.sub.4 solid solution. The crystal phase which has been denominated in the literature as "nitrogen-mullite" has a lath-like morphology and, hence, is useful in reinforcing the crystalline body. Where the predominant crystal phase comprises a silicate, it is believed that nitrogen is present in some manner within the silicate crystal structure. The parent thermally crystallizable glasses appear to be self-nucleating, i.e., the addition of a conventional nucleating agent such as TiO.sub.2, ZrO.sub.2, or SnO.sub.2 is not required to cause crystallization in situ. It is postulated that N may function as a nucleating agent.
    • 本发明涉及从可热结晶的玻璃组合物中制备玻璃陶瓷制品,该玻璃组合物含有约40-85%的SiO 2和2.5-17%的N作为碱性组分,并且利用这种改性剂作为碱金属, 元素周期表IIA和IIB族,硼和铝,以获得实用的玻璃形成组合物。 通常,在大于约3.5%的N含量下,原位显影的主要结晶相通常包含“氮莫来石”,氮氧化硅(Si 2 ON 2)和/或β'-Si 3 N 4固溶体。 在文献中称为“氮 - 莫来石”的结晶相具有板条形态,因此可用于增强结晶体。 当主要结晶相包含硅酸盐时,认为氮以某种方式存在于硅酸盐晶体结构内。 母体热可结晶玻璃似乎是自成核的,即不需要加入常规的成核剂如TiO 2,ZrO 2或SnO 2以引起原位结晶。 假设N可以作为成核剂起作用。
    • 14. 发明授权
    • Silica-alumina-nitrogen containing glasses for production of
glass-ceramics
    • 用于生产玻璃陶瓷的二氧化硅 - 氧化铝 - 含氮玻璃
    • US4097295A
    • 1978-06-27
    • US843872
    • 1977-10-20
    • Kenneth ChyungRaja R. Wusirika
    • Kenneth ChyungRaja R. Wusirika
    • C03C3/11C03C10/00C03C3/04C03C3/08
    • C03C3/111C03C10/0009
    • The instant invention is directed to the production of glass-ceramic articles from thermally crystallizable glass compositions containing, by weight, about 40-85% SiO.sub.2 and 2.5-17% N as basic constituents and utilizing such modifiers as the alkali metals, the elements of Groups IIA and IIB of the Periodic Table, boron, and aluminum to obtain practical glass-forming compositions. In general, at N contents greater than about 3.5%, the predominant crystal phase developed in situ will customarily comprise "nitrogen mullite," silicon oxynitride (Si.sub.2 ON.sub.2), and/or .beta.'-Si.sub.3 N.sub.4 solid solution. The crystal phase which has been denominated in the literature as "nitrogen-mullite" has a lath-like morphology and, hence, is useful in reinforcing the crystalline body. Where the predominant crystal phase comprises a silicate, it is believed that nitrogen is present in some manner within the silicate crystal structure. The parent thermally crystallizable glasses appear to be self-nucleating, i.e., the addition of a conventional nucleating agent such as TiO.sub.2, ZrO.sub.2, or SnO.sub.2 is not required to cause crystallization in situ. It is postulated that N may function as a nucleating agent.
    • 本发明涉及从可热结晶的玻璃组合物中制备玻璃陶瓷制品,该玻璃组合物含有约40-85%的SiO 2和2.5-17%的N作为碱性组分,并且利用这种改性剂作为碱金属, 元素周期表IIA和IIB族,硼和铝,以获得实用的玻璃形成组合物。 通常,在大于约3.5%的N含量下,原位显影的主要结晶相通常包含“氮富铝红柱石”,氮氧化硅(Si2ON2)和/或β'-Si3N4固溶体。 在文献中称为“氮 - 莫来石”的结晶相具有板条形态,因此可用于增强结晶体。 当主要结晶相包含硅酸盐时,认为氮以某种方式存在于硅酸盐晶体结构内。 母体热可结晶玻璃似乎是自成核的,即不需要加入常规的成核剂如TiO 2,ZrO 2或SnO 2以引起原位结晶。 假设N可以作为成核剂起作用。