The United States of America As Represented by the United States

The University of Chicago

Flandermeyer, Brian K.

Anderson, Harlan U.

Poeppel, Roger B.

Government of the Unites States As Represented by Th U.S. Department of Energy

Dusek, Joseph T.

Brian K Flandermeyer

Roger B Poeppel

Joseph T Dusek

Harlan U Anderson

Ira D Bloom

A process for preparing a superconducting ceramic and particularly YBa.sub.2 Cu.sub.3 O.sub.7-.delta., where .delta. is in the order of about 0.1-0.4, is carried out using a polymeric binder which decomposes below its ignition point to reduce carbon residue between the grains of the sintered ceramic and a nonhydroxylic organic solvent to limit the problems with water or certain alcohols on the ceramic composition.

Processing method for superconducting ceramics

An electronically conductive interconnect layer for use in a fuel cell or other electrolytic device is formed with sintering additives to permit densification in a monolithic structure with the electrode materials. Additions including an oxide of boron and a eutectic forming composition of Group 2A metal fluorides with Group 3B metal fluorides and Group 2A metal oxides with Group 6B metal oxides lower the required firing temperature of lanthanum chromite to permit densification to in excess of 94% of theoretical density without degradation of electrode material lamina. The monolithic structure is formed by tape casting thin layers of electrode, interconnect and electrolyte materials and sintering the green lamina together under common densification conditions.

Sintering aid for lanthanum chromite refractories

Growing community of inventors

Bolingbrook, IL, United States of America

Brian K Flandermeyer