Methods of manufacturing porous metal alloy fuel cell components

摘要

Porous metal components for high temperature fuel cells which are made by integrating the heretofore employed, separate tape casting and pack cementation processes. Particles of a base metal and a master alloy are suspended in a liquid medium in which a binding agent and a halide activator are dispersed. The suspension is cast into the shape wanted in the component, typically by tape casting; and the cast structure is heated to remove the liquid medium, leaving a flexible, green cast structure commonly referred to as a tape. The green tape is so heated as to: (a) burn out the binder in the tape; (b) form an alloy of the base metal and an alloying metal in the master alloy; and (c) sinter the alloy particles into a porous, coherent metal structure.