Metaphosphate glass composition
    4.
    发明授权
    Metaphosphate glass composition 失效
    甲基磷灰石组合物

    公开(公告)号:US5196381A

    公开(公告)日:1993-03-23

    申请号:US465403

    申请日:1990-01-16

    摘要: A low-K crystallizable glass composition having a softening point of 550.degree.-800.degree. C., consisting essentially of mole % of:41-70% P.sub.2 O.sub.5 ;10-48% MgO, ZnO or mixtures thereof;2-20% Al.sub.2 O.sub.3, Cr.sub.2 O.sub.3 or mixtures thereof;0-10% alkali metal oxide(s);0-10% CaO, SrO, BaO or mixtures thereof;0-10% SiO.sub.2 ;0-20% B.sub.2 O.sub.3 ;0-10% ZrO.sub.2, TiO.sub.2 or mixtures thereof; and0-10% Fe.sub.2 O.sub.3, with the provisos that:(i) a=n(b+3c+d+e+2f+3g), wherein n=0.8-1.0, anda=mole % P.sub.2 O.sub.5 ;b=mole % MgO, ZnO or mixtures thereof;c=mole % Al.sub.2 O.sub.3, Cr.sub.2 O.sub.3 or mixtures thereof;d=mole % M.sub.2 O, where M=Na, K, Rb, Cse=mole % M'O, where M'=Ca, Sr, Baf=mole % ZrO.sub.2, TiO.sub.2 or mixtures thereof;g=mole % Fe.sub.2 O.sub.3, (where Ln is any of the rare earth elements), or mixtures thereof;(ii) the total amount of alkali oxides, CaO, SrO, and BaO does not exceed 10 mole %;(iii) the total amount of ZrO.sub.2, TiO.sub.2, and Fe.sub.2 O.sub.3 does not exceed 10 mole %.

    摘要翻译: 软化点为550-800℃的低K可结晶玻璃组合物,基本上由摩尔%:41-70%的P 2 O 5组成; 10-48%MgO,ZnO或其混合物; 2-20%Al2O3,Cr2O3或其混合物; 0-10%碱金属氧化物; 0-10%CaO,SrO,BaO或其混合物; 0-10%SiO2; 0-20%B2O3; 0-10%ZrO 2,TiO 2或其混合物; 和0-10%Fe 2 O 3,条件是:(i)a = n(b + 3c + d + e + 2f + 3g),其中n = 0.8-1.0,a =摩尔%P 2 O 5; b =摩尔%MgO,ZnO或其混合物; c =摩尔%Al 2 O 3,Cr 2 O 3或其混合物; d =摩尔%M 2 O,其中M = Na,K,Rb,Cs e =摩尔%M'O,其中M'= Ca,Sr,Ba f =摩尔%ZrO 2,TiO 2或其混合物; g =摩尔%Fe 2 O 3,(其中Ln是任何稀土元素)或其混合物; (ii)碱金属氧化物,CaO,SrO和BaO的总量不超过10摩尔%。 (iii)ZrO 2,TiO 2和Fe 2 O 3的总量不超过10摩尔%。