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

Claim 17:
18. A method of forming a fuel cell interconnect, comprising:
depositing a pre-alloyed Cr—Fe alloy powder comprising from about 4 wt. % to about 6 wt. % Fe;
sintering the Cr—Fe 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 pre-alloyed Cr—Fe powder comprising 25 wt. % to 75 wt. % Fe on a fuel side of the interconnect; and
using at least one laser source to selectively sinter the Fe-rich pre-alloyed Cr—Fe powder to selectively form Fe-rich regions only on tops of the fuel-side ribs.