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US 6,297,183 B1Granted
Aging resistant porous silicon carbide ceramic igniter
AssigneeSaint-Gobain Ceramics & Plastics, Inc.
InventorsCraig A. Willkens, Normand P. Arsenault, James Olson, Roger Lin
Life of this patent
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Abstract
This invention relates to an aging resistant SiC igniter having a second layer of recrystallized SiC within the body.
Claims12
A ceramic body comprising:
- a) at least 30 wt % coarse silicon carbide particles having a particle size of at least 30 um,
- b) a coating of recrystallized alpha silicon carbide which coats and connects the coarse silicon carbide particles throughout the body,
- wherein the coarse silicon carbide particles and the coating comprise at least 89 vol % of the body.
A ceramic body comprising:
- a) at least 30 wt % coarse silicon carbide particles having a particle size of at least 30 um,
- b) an intermediate layer of recrystallized alpha silicon carbide which coats and connects the coarse silicon carbide particles, and
- c) an outer layer of recrystallized alpha silicon carbide coats the intermediate layer of recrystallized silicon carbide.
Dependencies are inferred from the claim text.