HEAT RESISTANT ILLUMINATING GLASS

FIELD: chemistry. ^ SUBSTANCE: invention relates to heat resistant glass, designed for making a wide range of illuminating construction, optical, aviation, space, aerodrome, chemical, metallurgical products. Glass contains the following, in wt %: SiO2 70.0-76.0; Al2O3 3.0-4.0; B2O3 9.0-11.0; Na2O 4....

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Bibliographische Detailangaben
Hauptverfasser:	GLAZKOVA NATALIJA VALENTINOVNA, KELINA ROZA PETROVNA, KAPLUNOVA ALLA MIKHAJLOVNA
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY GLASS JOINING GLASS TO GLASS OR OTHER MATERIALS METALLURGY MINERAL OR SLAG WOOL SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS
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Beschreibung
Zusammenfassung:	FIELD: chemistry. ^ SUBSTANCE: invention relates to heat resistant glass, designed for making a wide range of illuminating construction, optical, aviation, space, aerodrome, chemical, metallurgical products. Glass contains the following, in wt %: SiO2 70.0-76.0; Al2O3 3.0-4.0; B2O3 9.0-11.0; Na2O 4.5-6.0; K2O 1.5-2.0; CaO 2.0-3.0; BaO 3.5-4.5; CeO2 0.1-0.5; F- 0.1-0.6. The glass is boiled at temperature of 1530-1550°C. Working point is 1300-1450°C and crystallising temperature is 800-1050°C. The obtained glass is characterised 88.5-92% light transmission, and 110-120°C heat resistance. ^ EFFECT: increased light transmission in visible spectrum, increased heat resistance and lower temperature coefficient of linear expansion. ^ 2 tbl