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    • 8. 发明授权
    • Glass with high proportion of zirconium-oxide and its uses
    • 具有高比例氧化锆的玻璃及其用途
    • US06630420B1
    • 2003-10-07
    • US09913424
    • 2002-01-16
    • Karin NaumannNorbert Greulich-HickmannUwe KolbergWerner KieferSimone Ritter
    • Karin NaumannNorbert Greulich-HickmannUwe KolbergWerner KieferSimone Ritter
    • C03C3087
    • C03C3/087C03C13/002
    • The silicate glass has a composition (in % by weight, based on oxide) of SiO2, 54-72; Al2O3, 0.5-7; ZrO2, 10-20; B2O3, 0- 5-24; La2O3, 0-5; and TiO2, 0-4. The glass also contains at least 0.6 percent by weight of La2O3 or at least 0.1 percent by weight TiO2. The glass has a hydrolytic resistance in hydrolytic glass 1, an acid resistance in acid class 3 or better, preferably acid class 1, a caustic lye resistance in lye class 1, a glass transition temperature (Tg) of at least 650° C., a thermal expansion coefficient (&agr;20/300) of 4.1×10−6 to 7.4×10−6/K, a refractive index (nd) of 1.53 to 1.63, an Abbé number (&ngr;d) of 48 to 58 and a negative anomalous partial dispersion in a blue spectral region (&Dgr;Pg,F) of up to −0.0130.
    • 硅酸盐玻璃具有SiO 2,54-72的组成(按重量计,基于氧化物); Al2O3,0.5-7; ZrO2,10-20; B2O3,0- <5; Na2O,3-8; K2O,0-5; 与Na2O + K2O,2- <8; CaO,3-11; MgO,0-10; SrO,0-8; BaO,0α10; CaO + MgO + SrO + BaO> 5〜24; La2O3,0-5; 和TiO2,0-4。 该玻璃还含有至少0.6重量%的La 2 O 3或至少0.1重量%的TiO 2。 该玻璃在水解玻璃1中具有耐水解性,酸3级或更好,优选酸1级,碱液碱度1的耐碱碱液,玻璃化转变温度(Tg)至少为650℃, 4.1×10 -6至7.4×10 -6 / K的热膨胀系数(α20/ 300),折射率(nd)为1.53至1.63,Abbé数(nud)为48至58,负的 蓝色光谱区域中的异常部分色散(DeltaPg,F)高达-0.0130。