Barium oxide, which can be derived from barite, a mineral in abundance in Missouri, evidences the potential to play an expanded role in electronics packaging. We have identified barium aluminoborate glasses that are thermodynamically compatible with ain. Nitrogen incorporated into these glasses enhances the bonding of the glass to ain. The softening points and thermal expansion of the glasses are compatible with thick-film paste systems. The chemical durability of the glasses requires further improvement.
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