| US 7,521,387 B2 | ||
| Alkali-free composite sealant materials for solid oxide fuel cells | ||
| Liang A. Xue, Canton, Ohio (US); Jean Yamanis, South Glastonbury, Conn. (US); James Piascik, Randolph, N.J. (US); and Estela T. Ong, Chicago, Ill. (US) | ||
| Assigned to General Electric Company, Schenectady, N.Y. (US) | ||
| Filed on Sep. 21, 2004, as Appl. No. 10/711,477. | ||
| Prior Publication US 2006/0063659 A1, Mar. 23, 2006 | ||
| Int. Cl. C03C 8/24 (2006.01); C03C 8/00 (2006.01); C03C 8/14 (2006.01); C03C 3/064 (2006.01); C03C 3/068 (2006.01); C03C 3/066 (2006.01); B05D 5/12 (2006.01); H01M 2/00 (2006.01); H01M 2/08 (2006.01) | ||
| U.S. Cl. 501—15 [501/14; 501/17; 501/77; 501/78; 501/79; 427/115; 429/34; 429/35; 429/36] | 26 Claims |
| 1. 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% Y2O3, 5 to 20% B2O3, 10 to 30% SiO2, 3 to 35% MgO, 2 to 20% CaO, 1 to 10% ZnO, and 0 to 5% ZrO2, 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.
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