Claims
- 1. A method for making a molten carbonate fuel cell, comprising:annealing a chromium steel component at a temperature of at least 950° C.; removing any oxide coating that develops during said annealing, thereby reducing electrical resistance caused by a corrosion oxide coating at a current-carrying transition of the chromium steel component; and installing the chromium steel component as a cathode current collector in a molten carbonate fuel cell.
- 2. A method according to claim 1, wherein the chromium steel component has a chromium content of 10 to 22 wt.-%.
- 3. A method according to claim 2, wherein the chromium content is 15 to 19 wt.-%.
- 4. A method according to claim 1, wherein the chromium steel component contains, in weight percent:0 to 2% of at least one of carbon, silicon, phosphorus or 0 to 20% manganese; 0 to 20% nickel; 0 to 15% cobalt; and less than 0.5% of at least one of aluminum, yttrium, titanium or cerium.
- 5. A method according to claim 1, wherein the chromium steel component has material number AISI 316 L.
- 6. A method according to claim 1, wherein said annealing is at a temperature between 1050 and 1400° C.
- 7. A method according to claim 1, said annealing is performed for at least one hour.
- 8. A method according to claim 1, wherein said annealing is performed in vacuo or in an oxygen-free atmosphere.
- 9. A method according to claim 8, wherein the oxygen-free atmosphere is hydrogen.
Priority Claims (1)
Number |
Date |
Country |
Kind |
197 38 405 |
Sep 1997 |
DE |
|
Parent Case Info
This application is the U.S. national stage application of PCT/DE98/02538, and claims priority of German patent document 197 38 405.4, filed on Sep. 3, 1997.
PCT Information
Filing Document |
Filing Date |
Country |
Kind |
102e Date |
371c Date |
PCT/DE98/02538 |
|
WO |
00 |
7/12/2000 |
7/12/2000 |
Publishing Document |
Publishing Date |
Country |
Kind |
WO99/11828 |
3/11/1999 |
WO |
A |
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
5565167 |
Fujimoto et al. |
Oct 1996 |
|
Foreign Referenced Citations (10)
Number |
Date |
Country |
178712 |
May 1979 |
CS |
3126706 |
Jan 1983 |
DE |
0353699 |
Jul 1990 |
EP |
56133478 |
Oct 1981 |
JP |
62030817 |
Feb 1987 |
JP |
62253732 |
Nov 1987 |
JP |
04272132 |
Sep 1992 |
JP |
08225892 |
Mar 1996 |
JP |
08311620 |
Nov 1996 |
JP |
09157801 |
Jun 1997 |
JP |