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152 条记录 (耗时 0.016 秒)

    Chemically-machinable, high expansion glass ceramic and articles thereof
    82.
    发明公开
    Chemically-machinable, high expansion glass ceramic and articles thereof 失效
    化学可编辑的，高膨胀玻璃陶瓷以及它们的制品。

    公开(公告)号：EP0153026A1

    公开(公告)日：1985-08-28

    申请号：EP85300463.8

    申请日：1985-01-24

    申请人： Corning Glass Works

    发明人： McAlinn, Patrick

    IPC分类号： C03C10/04 ,  C03C10/14 ,  C03B32/00

    CPC分类号： C03C4/04 ,  C03C10/00

    摘要： The present invention relates to the production of photothermally crystallizable, chemically-machinable glass-ceramic articles exhibiting coefficients of thermal expansion over the temperature interval of 20°-400°C between 120-160 x 10 -7 / o C. Base glass articles having compositions consisting essentially, in weight percent, of 5.5-15% Li 2 O, 2-25% A1 2 0 3 , the weight ratio Al 2 O 3 :Li 2 O being less than 1.7:1, 60-85% Si0 2 , and at least one photosensitive metal in the indicated proportion selected from the group of 0.001-0.03% gold, computed as Au, 0.001 -0.3% silver, computed as AgCl, and 0.001-1% copper, computed as Cu 2 O are first exposed to ultraviolet radiations to develop a latent image therein, then heated to a temperature between the annealing and softening points thereof to generate metallic nuclei therein and the growth of lithium metasilicate particles thereon, and, finally, heated to a temperature in excess of 700°C, but less than 800°C, to effect an essentially crystalline article, including the conversion of a portion of the lithium metasilicate crystals to lithium disilicate. Quartz and/or cristobalite will also be formed.

    Strengthened glass-ceramic article method of manufacture
    83.
    发明公开
    Strengthened glass-ceramic article method of manufacture 失效
    VerstärkterGlaskeramikartikel und Verfahren zu dessen Herstellung。

    公开(公告)号：EP0097049A1

    公开(公告)日：1983-12-28

    申请号：EP83303400.2

    申请日：1983-06-13

    申请人： Corning Glass Works

    发明人： Beall, George Halsey

    IPC分类号： C03C10/12 ,  C03C10/14 ,  C03B32/00

    CPC分类号： C03C10/0027 ,  C03C10/0054

    摘要： A glass-ceramic having a lithium aluminosilicate crystal phase with a very low coefficient of thermal expansion and a residual glassy phase of substantial amount and higher coefficient of expansion, which can be a borosilicate or boroaluminosilicate glass. The two phases form a dilatant system wherein the termal expansion curve changes markedly in character at a transition point in the range of 500-750° C., the crystal phase dominating below that temperature and the glass phase controlling at high temperatures.

    摘要翻译： 具有非常低的热膨胀系数的铝硅酸铝结晶相的玻璃陶瓷和具有大量和更高膨胀系数的残余玻璃相，其可以是硼硅酸盐或硼硅铝酸盐玻璃。 两相形成一个膨胀系统，其中在500-750℃范围内的转变点，所述晶体相占主导低于该温度，玻璃相在高温下控制，所述膨胀曲线的特征明显变化。

    CRYSTALLIZED GLASS AND REINFORCED CRYSTALLIZED GLASS
    85.
    发明公开
    CRYSTALLIZED GLASS AND REINFORCED CRYSTALLIZED GLASS 审中-公开

    公开(公告)号：EP4209467A1

    公开(公告)日：2023-07-12

    申请号：EP21864162.9

    申请日：2021-08-23

    申请人： Ohara, Inc.

    发明人： KIKKAWA, Saya ,  OGASAWARA, Kohei ,  YAGI, Toshitaka

    IPC分类号： C03C10/14 ,  C03C21/00

    摘要： Provided are crystallized glass that is easy to process and in which a high compressive stress value can be obtained on a surface, and reinforced crystallized glass thereof.
    A crystallized glass containing at least one type selected from α-cristobalite and an α-cristobalite solid solution as a main crystal phase, in which, by mass% in terms of oxide, a content of a SiO 2 component is 50.0% to 75.0%, a content of a Li 2 O component is 3.0% to 10.0%, a content of an Al 2 O 3 component is 5.0% or more and less than 15.0%, and a content of a B 2 O 3 component is more than 0% and 10.0% or less.