Electrodes, method for production thereof and spark plugs with such an electrode

Electrode and spark plug (5) for an internal combustion engine, having an electrode of this type as a center electrode. The electrode includes an electrode base element (20) made of a first material and an end section (30) that is integrally joined to the electrode base element (20), with this end s...

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Bibliographische Detailangaben
Hauptverfasser:	ULM HEINZ, FISCHER JOCHEN
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS BASIC ELECTRIC ELEMENTS BLASTING CHEMISTRY COMBUSTION ENGINES CORONA DEVICES ELECTRICITY FERROUS OR NON-FERROUS ALLOYS GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS IGNITION, OTHER THAN COMPRESSION IGNITION, FORINTERNAL-COMBUSTION ENGINES LIGHTING MECHANICAL ENGINEERING METALLURGY OVERVOLTAGE ARRESTERS USING SPARK GAPS SPARK GAPS SPARKING PLUGS TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES TREATMENT OF ALLOYS OR NON-FERROUS METALS WEAPONS
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Beschreibung
Zusammenfassung:	Electrode and spark plug (5) for an internal combustion engine, having an electrode of this type as a center electrode. The electrode includes an electrode base element (20) made of a first material and an end section (30) that is integrally joined to the electrode base element (20), with this end section having a first area (23) that is integrally joined to the first material and is made of a platinum-containing material and having a second area (26) that is integrally joined to the first area (23) and is made of an iridium-containing and/or ruthenium-containing material. A method for manufacturing an electrode of this type, in which a first recess (21) is stamped in the electrode base element (20); a first preform (22) is inserted into the first recess (21); the first preform (22) is melted, thereby forming a first alloy; a second recess (24) is stamped in an area of the first alloy; a second preform (25) is inserted into the second recess (24); and the second preform (25) is melted, thereby forming a second alloy.