SPARK PLUG INCLUDING ELECTRODES WITH LOW SWELLING RATE AND HIGH CORROSION RESISTANCE

Title:

SPARK PLUG INCLUDING ELECTRODES WITH LOW SWELLING RATE AND HIGH CORROSION RESISTANCE

Document Type and Number:

WIPO Patent Application WO/2011/019893

Kind Code:

A3

Abstract:

A spark plug (20) includes a center electrode (24) and a ground electrode (22). The electrodes (22, 24) include a core (26) formed of a copper (Cu) alloy and a clad (28) formed of a nickel (Ni) alloy enrobing the core (26). The Cu alloy includes Cu in an amount of at least 98.5 weight percent, and at least one of Zr and Cr in an amount of at least 0.05 weight percent. The Cu alloy includes a matrix of the Cu and precipitates of the Zr and Cu dispersed in the Cu matrix. The Ni alloy of the clad (28) includes Ni in an amount of at least 90.0 weight percent. The Ni alloy also includes at least one of a Group 3 element, a Group 4 element, a Group 13 element, chromium (Cr), silicon (Si), and manganese (Mn) in a total amount sufficient to affect the strength of the Ni alloy.

Inventors:

MA SHUWEI (US)
LYKOWSKI JAMES D (US)

Application Number:

PCT/US2010/045294

Publication Date:

July 07, 2011

Filing Date:

August 12, 2010

Export Citation:

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Assignee:

FEDERAL MOGUL IGNITION CO (US)
MA SHUWEI (US)
LYKOWSKI JAMES D (US)

International Classes:

H01T13/20; H01T13/32

Foreign References:

US20050023949A1	2005-02-03
US5497045A	1996-03-05
US5395273A	1995-03-07
US4949006A	1990-08-14

Other References: