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High temperature seals between ceramic separation membranes and super-alloy housingOne of the concepts for oxygen production from Martian atmospheric carbon dioxide involves the use of tubular electrochemical membranes for oxygen separation. The tubular configuration offers the advantage of being able to separate the oxygen at pressures of up to 500 psi, thereby eliminating the need for a pre-liquefaction oxygen compressor. A key technology that has to be developed in order for the electrochemical separator to combine as a compressor is a high temperature static seal between the ceramic separation cell and the nickel-based super-alloy tube. Equipment was designed and fabricated to test the seals. Efforts are under way to develop a finite element model to study the thermal stresses at the joints and on the seal, and the optimal shape of the seal. The choice of seal materials and the technique to be used to fabricate the seals are also being investigated.
Document ID
19910015069
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Honea, G.
(Arizona Univ. Tucson, AZ, United States)
Sridhar, K. R.
(Arizona Univ. Tucson, AZ, United States)
Date Acquired
September 6, 2013
Publication Date
April 1, 1991
Publication Information
Publication: NASA Space Engineering Research Center for Utilization of Local Planetary Resources
Subject Category
Nonmetallic Materials
Accession Number
91N24382
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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