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Glasses Resistant to Sodium Vapor at Temperatures to 700°C
Author(s) -
BURGGRAAF A. J.,
VELZEN H. C.
Publication year - 1969
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1969.tb09174.x
Subject(s) - materials science , sodium , wetting , water vapor , sodium oxide , oxide , layer (electronics) , soldering , composite material , mineralogy , metallurgy , chemistry , organic chemistry
Glasses resistant to attack by sodium vapor at temperatures up to 700°C were developed from the CaO‐Al 2 O 3 ‐MgO‐BaO‐B 2 O 3 system. The resistance of these glasses decreases sharply above the transformation temperature. The glasses have a high water content, have good wetting properties, and adhere well to materials such as aluminum oxide and niobium; thus they can be used as solder glasses and metalizing components. The surface layer formed on the glass during attack by sodium vapor has a specific electrical resistance which is lower by 2 to 3 orders of magnitude than that of glass not exposed to sodium vapor.