Document Type and Number:
Japanese Patent JPWO2021161845
Kind Code:
A1
Abstract:
A noble metal tip for a spark plug according to the present invention contains iridium (Jr) in an amount of 50 mass % or more and aluminum (Al) in an amount of 0.1 mass % or more and 5 mass % or less, and further contains rhodium (Rh), wherein a metallographic structure comprised of fiber-like elements R is observed, and the fiber-like elements R of the metallographic structure have an average aspect ratio of 150 or more and have an average length of 25 μm or less in a minor axis direction.
Application Number:
JP2022500332A
Publication Date:
August 19, 2021
Filing Date:
February 02, 2021
Export Citation:
Domestic Patent References:
| JP2008248322A | 2008-10-16 | |||
| JP2011018612A | 2011-01-27 | |||
| JP2014075296A | 2014-04-24 | |||
| JP2020140800A | 2020-09-03 |
Foreign References:
| WO2007091576A1 | 2007-08-16 |