Patent ID: 11870222
Assignee: FEDERAL-MOGUL IGNITION GMBH
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B | IPC H

Claim 12:
13. A spark plug electrode, comprising:
an electrode base;
an electrode tip that is formed on the electrode base and includes a precious metal-based material and a plurality of laser deposition layers, the laser deposition layers are stacked on one another; and
an intermediate layer that is located between the electrode base and the electrode tip, the intermediate layer has a coefficient of thermal expansion (CTE) that is between that of the electrode base and the electrode tip,
wherein the electrode tip includes at least a first segment and a second segment, the first segment is located towards a center of the electrode tip and includes a first plurality of laser deposition layers, the second segment is located radially outboard of the first segment and includes a second plurality of laser deposition layers, the second segment is concentric with the first segment.