Patent ID: 9231380
Filing Date: 2016-01-05
CPC Classification: H01T

Claim Text:
1. A spark plug, comprising: a metallic shell having an axial bore; an insulator having an axial bore and being at least partially disposed within the axial bore of the metallic shell; a center electrode being at least partially disposed within the axial bore of the insulator; and a ground electrode being attached to a free end of the metallic shell; the center electrode, the ground electrode or both includes an electrode material that has a multi-phase composite material with a matrix component and a dispersed component, wherein the matrix component includes at least one precious metal, a transition metal, and a rare earth metal, and the dispersed component is an intermetallic embedded in the matrix component, and wherein the matrix component includes about 0.001 wt % to 0.3 wt % of the rare earth metal.