| 摘要 |
<p>An aluminosilicate transparent glass has corrosion resistance in the form of mass loss of 4.0mg or below per 1cm<2> of the surface of a specimen upon holding the specimen for five hours in sodium hydroxide solution having concentration of 300mg/L under test pressure of 50MPa at 250 DEG C. The glass has a coefficient of thermal expansion within a range from 35 x 10<-7>/ DEG C to 50 x 10<-7>/ DEG C within a temperature range from 100 DEG C to 300 DEG C. The glass has also powdered glass mass loss rate of 0.1% or below in terms of water resistance, acid resistance and alkali resistance.</p> |
