Title:
SPARK PLUG ELECTRODE MATERIAL
Document Type and Number:
WIPO Patent Application WO/2018/021028
Kind Code:
A1
Abstract:
The present invention is a spark plug electrode material made of an Ir-Rh-M alloy in which Rh, which is an essential added element, and a metal M are added to Ir, wherein the plug electrode material comprises 5.5 at% to 45.0 at% of Rh and comprises, as metal M, at least one kind of metal among 0.1 at% to 19.0 at% W, 0.1 at% to 16.0 at% Nb, 0.1 at% to 8.0 at% Hf, 0.1 at% to 8.0 at% Mo, and 0.1 at% to 8.0 at% V, the balance being Ir. Said Ir-Rh-M alloy is a spark plug electrode material capable of exhibiting better high temperature oxidation resistance than prior Ir-Rh alloys.
Inventors:
MANO SHINSUKE (JP)
OBATA TOMOKAZU (JP)
SHIMA KUNIHIRO (JP)
OBATA TOMOKAZU (JP)
SHIMA KUNIHIRO (JP)
Application Number:
PCT/JP2017/025398
Publication Date:
February 01, 2018
Filing Date:
July 12, 2017
Export Citation:
Assignee:
TANAKA PRECIOUS METAL IND (JP)
International Classes:
C22C5/04; H01T13/39
Foreign References:
| JP2008509531A | 2008-03-27 | |||
| JPH10259435A | 1998-09-29 | |||
| JP2010517248A | 2010-05-20 | |||
| JP2001203060A | 2001-07-27 | |||
| JP2011505652A | 2011-02-24 | |||
| JP2005533924A | 2005-11-10 |
Attorney, Agent or Firm:
TANAKA AND OKAZAKI (JP)
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