2.
    发明专利
    未知

    公开(公告)号:DE69502262T2

    公开(公告)日:1998-09-24

    申请号:DE69502262

    申请日:1995-12-06

    Applicant: CORNING INC

    Abstract: The glass compsn. free of easily reducible metal oxides other than Sb2O3 consists of (wt.% on an oxide basis): 55-60 SiO2; 5.75-10 K2O; 1-3 Al2O3; 10.5-14 K2O + Na2O; 0-3.5 ZrO2; 1.6-2.6 K2O/Na2O (wt); 0.6-2 Li2O; = 1 K2O/Na2O (mol); 7.5-13.5 SrO; 0.5-1 CeO2; 14-16 BaO; 0.25-1 TiO2; 3-5 Na2O; 0.15-0.5 Sb2O3. It shows no browning discolouration on exposure to high voltage electrons, has a linear coefft. of thermal expansion of 97-100 x 10-7[deg]C over the range 25-300[deg]C, an annealing point not lower than 475[deg]C, a strain point not lower than 440[deg]C, an electrical resistivity expressed as Log R >= 9 at 250[deg]C and >= 7 at 350[deg]C, and a liquidus temp 1100[deg]C.

    6.
    发明专利
    未知

    公开(公告)号:MX9200410A

    公开(公告)日:1992-10-01

    申请号:MX9200410

    申请日:1992-01-30

    Applicant: CORNING INC

    Abstract: A cathode ray tube faceplate glass that is essentially free from fluorine and the oxides of lead arsenic and zirconium, exhibits linear X-radiation absorption coefficients of at least 28 cm at a wavelength of 0.6 Angstroms and at least 8.5cm at 0.3 Angstroms, undergoes essentially no "browning" discoloration when subjected to high velocity electrons, has a viscosity at the internal liquidus of at least 100,000 poises (10,000 Pa.s), has a coefficient of thermal expansion (25-300 DEG C) in the range of 97-100x10-7/ DEG C, has an annealing point not lower than about 500 DEG C and a strain point not lower than about 455 DEG C, has an electrical resistivity expressed in log R, that is greater than 9 at 250 DEG C and greater than 7 at 350 DEG C, the glass consisting essentially, expressed in terms of weight percent as oxide basis, of Si02 60-65 Al203 0-3 Na20 6.5-8 K20 6.5-10 CaO+MgO 0-3 Sb2O3 0.1-1 Sr0 8-12 Ba0 8-12 Ba0+Sr0 16-21 Zn0 1-8 Ce02 0.1-1 Ti02 0.1-1

    9.
    发明专利
    未知

    公开(公告)号:DE69209689T2

    公开(公告)日:1996-10-24

    申请号:DE69209689

    申请日:1992-01-16

    Applicant: CORNING INC

    Abstract: A cathode ray tube faceplate glass that is essentially free from fluorine and the oxides of lead arsenic and zirconium, exhibits linear X-radiation absorption coefficients of at least 28 cm at a wavelength of 0.6 Angstroms and at least 8.5cm at 0.3 Angstroms, undergoes essentially no "browning" discoloration when subjected to high velocity electrons, has a viscosity at the internal liquidus of at least 100,000 poises (10,000 Pa.s), has a coefficient of thermal expansion (25-300 DEG C) in the range of 97-100x10-7/ DEG C, has an annealing point not lower than about 500 DEG C and a strain point not lower than about 455 DEG C, has an electrical resistivity expressed in log R, that is greater than 9 at 250 DEG C and greater than 7 at 350 DEG C, the glass consisting essentially, expressed in terms of weight percent as oxide basis, of Si02 60-65 Al203 0-3 Na20 6.5-8 K20 6.5-10 CaO+MgO 0-3 Sb2O3 0.1-1 Sr0 8-12 Ba0 8-12 Ba0+Sr0 16-21 Zn0 1-8 Ce02 0.1-1 Ti02 0.1-1

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