Title:
SPARK PLUG ELECTRODE MATERIAL HAVING EXCELLENT SPARK CONSUMPTION RESISTANCE AND EXCELLENT DISCHARGE CHARACTERISTICS
Document Type and Number:
WIPO Patent Application WO/2011/102355
Kind Code:
A1
Abstract:
Provided is a plug electrode material which has excellent oxidation consumption resistance and excellent spark consumption properties and is produced taking discharge characteristics in using into consideration.
The plug electrode material comprises 5-30 mass% inclusive of Cu, 0.1-15 mass% inclusive of Ir and Pt as the balance. By compositely alloying two metals, i.e., Cu and Ir, the discharge voltage can be lowered and the spark consumption resistance can be improved. By adding only one of these metals, an insufficient effect of improving the spark consumption resistance is merely obtained and no lowering in discharge voltage can be expected.
Inventors:
TANAKA KUNIHIRO (JP)
NAKAMURA MUNEKI (JP)
NAKAMURA MUNEKI (JP)
Application Number:
PCT/JP2011/053191
Publication Date:
August 25, 2011
Filing Date:
February 16, 2011
Export Citation:
Assignee:
TANAKA PRECIOUS METAL IND (JP)
TANAKA KUNIHIRO (JP)
NAKAMURA MUNEKI (JP)
TANAKA KUNIHIRO (JP)
NAKAMURA MUNEKI (JP)
International Classes:
H01T13/39; C22C5/04
Foreign References:
| JP2004165165A | 2004-06-10 |
Other References:
See also references of EP 2509175A4
None
None
Attorney, Agent or Firm:
TANAKA AND OKAZAKI (JP)
Patent business corporation Tanaka and Okazaki and associates (JP)
Patent business corporation Tanaka and Okazaki and associates (JP)
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Claims: