Title:
膨張率が低く耐食性が高い電極を含むスパークプラグ
Document Type and Number:
Japanese Patent JP2013502044
Kind Code:
A
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.
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Inventors:
Mar, shoeway
Rikowski, James Di
Rikowski, James Di
Application Number:
JP2012524863A
Publication Date:
January 17, 2013
Filing Date:
August 12, 2010
Export Citation:
Assignee:
FEDERAL-MOGUL IGNITION COMPANY
International Classes:
H01T13/39; B22F7/02; C22C1/04; C22C9/00; C22C19/03
Attorney, Agent or Firm:
Fukami patent office