Dear all,

When bonding sodium containing glasses, at the cathode side (top glass
surface) sodium hydroxide can form as a contaminant. This is thought to be
due to the reaction between the migrated sodium and moisture.

This effect could be avoided by chosing a different electrode geometry or
material. Can anyone give me ideas or references for avoiding this specific
problem.

Thanks in advance,

Ton van Helvoort
Trondheim