The Effect of Heat Treatment in Different Atmospheres on the Stress in Tungsten-to-Glass Seals

JSGT 1946 V30 T217-T238

A study has been made of the effect of heat treatment in air and hydrogen on the longitudinal stress at the glass-to-metal boundary of cylindrical single wire seals, and determinations have been made of the relationships between (a) stress and time, and (b) stress and temperature for "oxide" and "oxide-free" seals. The observed changes in stress were correlated with changes in the physical and chemical conditions at the interface. Stress measurements were made after the seals had cooled slowly from the temperature of test.

M. Manners