Sinter reactive lanthanum chromite and process for making it

Details Sinter reactive lanthanum chromite and process for making it Sinter reactive lanthanum chromite and process for making it

1992-01-21

1993-02-09

Bell, Mark I.

Compositions: ceramic

Ceramic compositions

Refractory

501126, 501108, 501152, 252518, 252521, 423263, 423593, 423606, 264 82, 264 83, C04B 3504, C04B 3551, C04B 3542, C01G 3900

Patent

active

051853019

ABSTRACT:
A sinter-reactive lanthanum chromite powder is prepared from the lanthanum chromite precursor LaCr.sub.1-x M.sub.x O.sub.3 (Adsorbate). The powder is crystalline, has the formula LaCr.sub.1-x M.sub.x O.sub.3, where M is magnesium or calcium and x ranges from about 0.03 to 0.3, and sinters to densities higher than about 95% of theoretical density at temperature as low as 1600.degree. C. in inert or reducing atmospheres. Sintering to such high density at temperatures in the vicinity of 1600.degree. C. makes the powder particularly suited for use as interconnect material for solid oxide fuel cells.

REFERENCES:
patent: 4830780 (1989-05-01), Olson et al.
patent: 4845056 (1989-07-01), Yamanis

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