| abstract |
An electrically conductive glass seal is provided for providing a hermetic seal between an insulator and an electrically conductive component of a corona ignition device. The glass seal is formed by mixing glass frit, binder, swelling agent and electrically conductive metal particles. Glass frit are it may include silica (SiO 2), boron oxide (B 2 O 3), aluminum oxide (Al 2 O 3), bismuth oxide (Bi 2 O 3) and zinc oxide (ZnO); The binder may comprise sodium bentonite or magnesium aluminum silicate, polyethylene glycol (PEG) and dextrin; The swelling agent may comprise lithium carbonate; And the electrically conductive particles may comprise copper. The finished glass seal is a glass having a total amount of 50.0 to 90.0 wt.% (Wt.%) Based on the total weight of the glass seal, and an amount of 10.0 to 50.0 wt. % ≪ / RTI > of electrically conductive metal particles. |