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    • 18. 发明授权
    • Crystallized glass
    • 结晶玻璃
    • US06750167B2
    • 2004-06-15
    • US10188295
    • 2002-07-01
    • Naoyuki KitamuraTakahiro MatanoAkihiko Sakamoto
    • Naoyuki KitamuraTakahiro MatanoAkihiko Sakamoto
    • C03C1012
    • C03C10/0027
    • A crystallized glass is provided. A &bgr;-quartz solid solution or a &bgr;-eucryptite solid solution is precipitated as a main crystal. The crystallized glass has a crystallization degree not less than 70 mass %, a crystal grain size not more than 0.5 &mgr;m, substantially no gap or crack occurring at boundaries of crystal grains. The crystallized glass also has a thermal expansion coefficient being negatively greater than −10×10−7/° C. within a temperature range of −40° C.˜100° C., a hysteresis of the thermal expansion coefficient within the temperature range being not more than 10 ppm, and a temperature dependence of the refractive index being not more than 13×10−6/° C.
    • 提供结晶玻璃。 作为主晶体沉淀出β-石英固溶体或β-锂钇石固溶体。 结晶化玻璃的结晶度不低于70质量%,晶粒尺寸不大于0.5μm,在晶粒边界处基本上没有间隙或裂纹。 在-40℃〜100℃的温度范围内,结晶化玻璃的热膨胀系数也大于-10×10 -7 /℃,热膨胀系数的滞后在温度范围内 不超过10ppm,折射率的温度依赖性不大于13×10 -6 /℃。