Spark plug electrode material and spark plug and method for manufacturing the spark plug electrode material and an electrode for the spark plug

Patent metadata

Field	Value
Publication number	US-9748741-B2
Application number	US-201214110518-A
Country	US
Kind code	B2
Filing date	Feb 15, 2012
Priority date	Apr 15, 2011
Publication date	Aug 29, 2017
Grant date	Aug 29, 2017

Abstract

A spark plug electrode material containing a) 0.7 to 1.3% silicon by weight, b) 0.5 to 1.0% copper by weight, and c) nickel as the balance.

First claim

What is claimed is:

1. A spark plug electrode material, comprising:
0.7 to 1.3% silicon by weight;
0.5 to 1.0% copper by weight;
0.07 to 0.13% yttrium by weight; and
nickel as the balance.

2. The spark plug electrode material of claim 1 , wherein the level of silicon is 0.9 to 1.1%, the level of copper is 0.6 to 0.85%, and the level of nickel is approximately 97.5 to 98.5% by weight.

3. The spark plug electrode material of claim 1 , wherein the electrode material is free of aluminum, aluminum compounds, and intermetallic phases.

4. The spark plug electrode material of claim 1 , wherein the level of metallic impurities amounts to, in total, less than 0.15% by weight.

5. The spark plug electrode material of claim 1 , wherein the level of iron, chromium, and titanium is less than 0.05% by weight.

6. The spark plug electrode material of claim 1 , wherein the level of sulfur, sulfur compounds, carbon, and carbon compounds is less than 0.01% by weight.

7. The spark plug electrode material of claim 1 , wherein the level of oxygen is less than 0.003% by weight.

8. The spark plug electrode material of claim 1 , including:
a) 98.15% nickel by weight,
b) 1% silicon by weight,
c) 0.75% copper by weight, and
d) 0.1% yttrium by weight.

9. The spark plug electrode material of claim 1 , including:
a) 0.7 to 1.3% silicon by weight,
b) 0.5 to 1.0% copper by weight,
c) 0.07 to 0.13% yttrium by weight,
d) less than 0.003% oxygen by weight,
e) 0.001% sulfur by weight,
f) 0.003% carbon by weight,
g) balance: nickel, the level of metallic impurities amounting to, in total, less than 0.1% by weight.

10. The spark plug electrode material of claim 1 , wherein the level of silicon is 1% by weight, and/or the level of copper is 0.75% by weight, and the level of nickel is approximately 97.5 to 98.5% by weight.

11. The spark plug electrode material of claim 1 , wherein the level of iron chromium, and titanium is less than 0.01% by weight.

12. The spark plug electrode material of claim 1 , wherein the level of sulfur, sulfur compounds, carbon, and carbon compounds is less than 0.005% by weight.

13. The spark plug electrode material of claim 1 , wherein the level of oxygen is less than 0.003% by weight.

14. The spark plug electrode material of claim 1 , including:
a) 1% silicon by weight,
b) 0.75% copper by weight,
c) 0.1% yttrium by weight,
d) less than 0.002% oxygen by weight,
e) 0.001% sulfur by weight,
f) 0.003% carbon by weight,
g) balance: nickel, the level of metallic impurities amounting to, in total, less than 0.1% by weight.

15. The spark plug electrode material of claim 1 , wherein it further contains 0.10% yttrium by weight.

16. The spark plug electrode material of claim 1 , wherein the level of sulfur, sulfur compounds, carbon, and carbon compounds is less than 0.001% by weight.

17. A spark plug, comprising:
an electrode made of a spark plug electrode material, including 0.7 to 1.3% silicon by weight, 0.5 to 1.0% copper by weight, 0.09 to 0.11% yttrium by weight, and nickel as the balance.

18. The spark plug of claim 17 , wherein the electrode is a center electrode a copper core.

19. The spark plug of claim 17 , wherein the electrode is a center electrode without a copper core.

20. The spark plug of claim 17 , wherein the electrode is a ground electrode with a copper core.

21. The spark plug of claim 17 , wherein the electrode is a ground electrode without a copper core.

Assignees

• Menken Lars
• Oberle Juergen
• Baus Simone
• Boehm Jochen
• Bosch Gmbh Robert

Inventors

• Menken Lars
• Oberle Juergen
• Baus Simone
• Boehm Jochen

Classifications

• C22C19/03

  based on nickel · CPC title

• H01T13/39 Primary

  Selection of materials for electrodes · CPC title