Coating apparatus – Gas or vapor deposition – With treating means
Patent
1988-04-21
1989-05-23
Bueker, Richard
Coating apparatus
Gas or vapor deposition
With treating means
118715, C23C 1600
Patent
active
048319651
ABSTRACT:
In a high temperature solid oxide fuel cell (SOFC), the deposition of an impervious high density thin layer of electrically conductive interconnector material, such as magnesium doped lanthanum chromite, and of an electrolyte material, such as yttria stabilized zirconia, onto a porous support/air electrode substrate surface is carried out at high temperatures (approximately 1100.degree.-1300.degree. C.) by a process of electrochemical vapor deposition. In this process, the mixed chlorides of the specific metals involved react in the gaseous state with water vapor resulting in the deposit of an impervious thin oxide layer on the support tube/air electrode substrate of between 20-50 microns in thickness. An internal heater, such as a heat pipe, is placed within the support tube/air electrode substrate and induces a uniform temperature profile therein so as to afford precise and uniform oxide deposition kinetics in an arrangement which is particularly adapted for large scale, commercial fabrication of SOFCs.
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Brian Riley
Szreders Bernard E.
Bueker Richard
Fisher Robert J.
Glenn Hugh W.
Hightower Judson R.
The United States of America as represented by the United States
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