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US 5,477,022 AGranted
Electrode and process for manufacturing it
AssigneeRobert Bosch GmbH
InventorKarl-Hermann Friese
Life of this patent
Estimating the term…
Abstract
An electrical-discharge electrode, in particular a spark-plug electrode, having a main electrode body made of metal, the main electrode body, in particular at least its tip, is provided with an intermetallic phase composed of nickel aluminides, and a method of producing this electrical-discharge electrode.
Claims11
A method of making an electrode for a spark plug comprising the steps of:
- a) providing an electrode body of a material comprising nickel or nickel alloy;
- b) applying aluminum or an aluminum alloy to the electrode body;
- and
- c) treating the electrode body to form a nickel-aluminide intermetallic phase at least on the surface of the electrode body thereby producing a spark-plug electrode.
1 more element
A method of making an electrode for a spark plug comprising the steps of:
- a) providing an electrode body of a material comprising nickel or nickel alloy;
- b) applying aluminum or an aluminum alloy to a tip of the electrode body;
- and
- c) treating the electrode body tip to form a nickel aluminide intermetallic phase.
1 more element
Dependencies are inferred from the claim text.