Patent ID: 11962041
Assignee: BLOOM ENERGY CORPORATION
Field: Materials, metallurgy (Chemistry)
Classification: CPC H  B  C  Y | IPC B  H

Claim 0:
1. A method of forming a fuel cell interconnect, comprising:
depositing a Cr alloy powder;
sintering the Cr alloy powder;
repeating the depositing and the sintering to form the fuel cell interconnect comprising fuel-side ribs that at least partially define fuel channels;
depositing a Fe-rich powder on a fuel side of the interconnect; and
selectively sintering the Fe-rich powder to selectively form Fe-rich regions only on tops of fuel-side ribs, wherein:
the Cr alloy powder comprises pre-alloyed chromium iron alloy particles containing:
from about 4 wt. % to about 6 wt. % Fe; and
from about 94 wt. % to about 96 wt. % Cr, and

the Fe-rich powder has a higher Fe content than the Cr alloy powder and comprises pre-alloyed Cr—Fe alloy particles containing 25 wt. % to 75 wt. % Fe and balance Cr.