利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

39 条记录 (耗时 0.026 秒)

    Transparent glass-ceramics containing mullite
    3.
    发明授权
    Transparent glass-ceramics containing mullite 失效
    含有莫来石的透明玻璃陶瓷

    公开(公告)号：US4519828A

    公开(公告)日：1985-05-28

    申请号：US479681

    申请日：1983-03-28

    申请人： George H. Beall ,  John F. MacDowell ,  Mark P. Taylor

    发明人： George H. Beall ,  John F. MacDowell ,  Mark P. Taylor

    IPC分类号： C03C10/00 ,  C03C10/04 ,  C03C3/22

    CPC分类号： C03C10/0054 ,  C03C3/093 ,  C03C3/108

    摘要： This invention is concerned with the production of substantially transparent glass-ceramic articles containing mullite as the predominant crystal phase which can be prepared by crystallizing in situ precursor glasses capable of being melted at temperatures no higher than 1650.degree. C. The inventive articles consist essentially, in weight percent, of 10-70% SiO.sub.2, 7-40% B.sub.2 O.sub.3, 14-50% Al.sub.2 O.sub.3, 0-35% RO, wherein RO consists of at least one member of the group in the indicated proportions of 0-15% MgO, 0-20% CaO, 0-30% SrO, 0-30% BaO, and 0-30% PbO, and 0-30% R.sub.2 O, wherein R.sub.2 O consists of at least one member of the group in the indicated proportions of 0-10% Li.sub.2 O, 0-15% Na.sub.2 O, 0-25% K.sub.2 O, 0-25% Rb.sub.2 O, and 0-25% Cs.sub.2 O, the mole ratio Al.sub.2 O.sub.3 :RO+R.sub.2 O>1.3. Where 0.01-1% Cr.sub.2 O.sub.3 is included in the composition, the glass-ceramic will exhibit broad absorption over the visible region of the radiation spectrum, strong fluorescence in the red and near infrared portions of the spectrum where exposed to ultraviolet and/or visible radiation, and relatively little overlap of the absorption and fluorescent spectra.

    摘要翻译： 本发明涉及生产基本上透明的含有莫来石作为主要结晶相的玻璃陶瓷制品，其可以通过使能够在不高于1650℃的温度下熔化的原位前体玻璃结晶来制备。本发明的制品基本上包括， 重量百分比为10-70％SiO 2，7-40％B 2 O 3，14-50％Al 2 O 3，0-35％RO，其中RO由至少一种所述比例的0-15％MgO ，0-20％CaO，0-30％SrO，0-30％BaO和0-30％PbO和0-30％R2O，其中R2O由指定比例为0的至少一种成员组成 -10％Li2O，0-15％Na2O，0-25％K2O，0-25％Rb2O和0-25％Cs2O，摩尔比Al2O3：RO + R2O> 1.3。 在组合物中包含0.01-1％的Cr2O3的情况下，玻璃陶瓷将在辐射光谱的可见区域表现出广泛的吸收，在暴露于紫外线和/或可见光辐射的光谱的红色和近红外部分的强荧光 ，并且吸收和荧光光谱的重叠相对较少。

    Transparent glass-ceramics containing mullite
    4.
    发明授权
    Transparent glass-ceramics containing mullite 失效
    含有莫来石的透明玻璃陶瓷

    公开(公告)号：US4396720A

    公开(公告)日：1983-08-02

    申请号：US395617

    申请日：1982-07-06

    申请人： George H. Beall ,  John F. MacDowell ,  Mark P. Taylor

    发明人： George H. Beall ,  John F. MacDowell ,  Mark P. Taylor

    IPC分类号： C03C3/064 ,  C03C3/091 ,  C03C4/02 ,  C03C10/00 ,  C03C10/04 ,  C03C3/22 ,  C03C3/04

    CPC分类号： C03C10/0054

    摘要： This invention is concerned with the production of substantially transparent glass-ceramic articles containing mullite as the predominant crystal phase which can be prepared by crystallizing in situ precursor glasses capable of being melted at temperatures no higher than 1650.degree. C. The inventive articles consist essentially, in weight percent, of 1070% SiO.sub.2, 7-40% B.sub.2 O.sub.3, 14-50% Al.sub.2 O.sub.3, 0-35% RO, wherein RO consists of at least one member of the group in the indicated proportions of 015% MgO, 0-20% CaO, 0-30% SrO, 0-30% BaO, and 0-30% PbO, and 0-30% R.sub.2 O, wherein R.sub.2 O consists of at least one member of the group in the indicated proportions of 0-10% Li.sub.2 O, 0-15% Na.sub.2 O, 0-25% K.sub.2 O, 0-25% Rb.sub.2 O, and 0-25% Cs.sub.2 O, the mole ratio Al.sub.2 O.sub.3 :RO+R.sub.2 O>1.3. Where 0.01-1% Cr.sub.2 O.sub.3 is included in the composition, the glass-ceramic will exhibit broad absorption over the visible region of the radiation spectrum, strong fluorescence in the red and near infrared portions of the spectrum where exposed to ultraviolet and/or visible radiation, and relatively little overlap of the absorption and fluorescent spectra.

    摘要翻译： 本发明涉及生产基本上透明的含有莫来石作为主要结晶相的玻璃陶瓷制品，其可以通过使能够在不高于1650℃的温度下熔化的原位前体玻璃结晶来制备。本发明的制品基本上包括， 重量百分比为1070％SiO 2，7-40％B 2 O 3，14-50％Al 2 O 3，0-35％RO，其中RO由指定比例的至少一种成员组成，其中，015％MgO，0-20 ％CaO，0-30％SrO，0-30％BaO和0-30％PbO和0-30％R2O，其中R2O由指定比例的0-10％Li 2 O中的至少一个成员组成 ，0-15％Na2O，0-25％K2O，0-25％Rb2O和0-25％Cs2O，摩尔比Al2O3：RO + R2O> 1.3。 在组合物中包含0.01-1％的Cr2O3的情况下，玻璃陶瓷将在辐射光谱的可见区域表现出广泛的吸收，在暴露于紫外线和/或可见光辐射的光谱的红色和近红外部分中的强荧光 ，并且吸收和荧光光谱的重叠相对较少。

    Bonding frits for ceramic composites
    9.
    发明授权
    Bonding frits for ceramic composites 失效
    陶瓷复合材料的粘结玻璃料

    公开(公告)号：US4973564A

    公开(公告)日：1990-11-27

    申请号：US402516

    申请日：1989-09-05

    申请人： Kenneth Chyung ,  Robert M. Morena ,  Mark P. Taylor

    发明人： Kenneth Chyung ,  Robert M. Morena ,  Mark P. Taylor

    IPC分类号： C04B37/00 ,  C03C8/02 ,  C03C8/24 ,  C03C10/00 ,  C04B37/04

    CPC分类号： C03C10/0036 ,  C03C10/0045 ,  C03C10/0054 ,  C03C8/24 ,  Y10T428/249969

    摘要： A sealing method and sealed assemblies incorporating novel devitrifiable sealing frits based on thermally crystallizable alkaline earth aluminosilicate glasses, are disclosed. The frits exhibit improved compatibility with refractory composites employed for the fabrication of high temperature fiber-reinforced glass-ceramic assemblies and can be cured at temperatures below those needed to cure prior art sealing compositions to provide strong seals wherein refractory crystal phases selected from the group consisting of anorthite (CaO.Al.sub.2 O.sub.3.2SiO.sub.2), celsian (BaO.Al.sub.2 O.sub.3.2SiO.sub.2), and sanidine, orthoclase or other potash feldspar (K.sub.2 O.Al.sub.2 O.sub.3.6SiO.sub.2) polymorphs constitute the principal phases.