| 摘要 |
An electrode material may be used in spark plugs and other ignition devices including industrial plugs, aviation igniters, glow plugs, or any other device that is used to ignite an air/fuel mixture in an engine. In one embodiment, the electrode material has one or both of iridium (Ir) or ruthenium (Ru), and has rhenium (Re). |
| 主权项 |
1. A spark plug, comprising:
a metallic shell having an axial bore; an insulator being at least partially disposed within the axial bore of the metallic shell, the insulator having an axial bore; a center electrode being at least partially disposed within the axial bore of the insulator; and a ground electrode being attached to the metallic shell; the center electrode, the ground electrode, or both the center and ground electrodes includes an electrode material having ruthenium (Ru), rhenium (Re), and at least one precious metal selected from the group consisting of: iridium (Ir), rhodium (Rh), platinum (Pt), palladium (Pd), or gold (Au); wherein the ruthenium (Ru) is the single largest constituent of the electrode material on a weight percentage (wt %) basis, the rhenium (Re) is present in the electrode material in an amount from about 0.1 wt % to 5 wt %, and the at least one precious metal has a smaller weight percentage than the ruthenium (Ru), and the rhenium (Re) has a smaller weight percentage than the at least one precious metal.
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