PbO-free glasses for cathode ray tubes having a high protective

Details PbO-free glasses for cathode ray tubes having a high protective PbO-free glasses for cathode ray tubes having a high protective

1984-07-06

1986-07-08

Dixon, Jr., William R.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 64, 501 69, 501 72, 313480, 252478, C03C 304

Patent

active

045993190

ABSTRACT:
New, PbO-free glasses for cathode ray tubes are composed of (in % by weight) 50-52 SiO.sub.2 ; 0-3 Al.sub.2 O.sub.3 ; 1-1.7 Li.sub.2 O; 6.5-10.7 Na.sub.2 O; 0-4.5 K.sub.2 O; 0.4-1.4 F; 0-0.5 TiO.sub.2 ; 0.2-1.2 CeO.sub.2 ; 0-5 ZnO; 0-7.0 BaO; 15-22 SrO; and 6.3-10.3 ZrO.sub.2, and are characterized by a high protective effect against X-rays while having at the same time good resistance to acid and stability to radiation.

REFERENCES:
patent: 3464932 (1969-09-01), Connelly et al.
patent: 3819972 (1974-06-01), Sanner
patent: 4015966 (1977-04-01), Weaver
patent: 4277286 (1981-07-01), Boyd et al.
patent: 4390637 (1983-06-01), Daiku

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