Patent ID: 7521387

Claim:
A glass or glass-ceramic sealant composition comprising: a glass constituted from a mixture of alkali-free inorganic oxides, the mixture including, on a mole basis, 20 to 50% BaO, 1 to 10% Y 2 O 3 , 5 to 20% B 2 O 3 , 10 to 30% SiO 2 , 3 to 35% MgO, 2 to 20% CaO, 1 to 10% ZnO, and 0 to 5% ZrO 2 , wherein the glass or glass-ceramic sealant composition upon heating to a temperature above its softening point devitrifies and crystallizes, and wherein the glass or glass-ceramic sealant composition is adapted to seal solid oxide fuel cell components.