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  • 1
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    System Controls and Measures Oxygen Fugacity (1982)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: System developed at Johnson Space Center controls and measures oxygen fugacity in high-temperature chemical research. A ceramic-electrolyte cell is the sensing element. All hardware needed to control gas flow and temperature and to measure cell electromotive force is included. An analytic balance allows in situ thermogravimetric sample analysis.
    Keywords: MATERIALS
    Type: MSC-20096 , NASA Tech Briefs (ISSN 0145-319X); 6; 2; P. 163
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Magnetron Sputtering Deposits Corrosion-Resistant Alloy (1986)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Dense, amorphous, metallic film resists corrosion attack by acid. Coatings thermally stable up to 800 degrees C and made corrosion resistant by proper choice of sputtering deposition conditions. Protective, corrosionresistant coatings applied to process equipment that comes in contact with aqueous, neutral, or acidic solutions in chemical, petroleum, and paper industries, in wastewater treatment, and in heat exchangers.
    Keywords: MATERIALS
    Type: NPO-15928 , NASA Tech Briefs (ISSN 0145-319X); 9; 3; P. 92
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Crystal growing by electrodeposition from dense gaseous solutions (1970)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Single crystals and dendritic formations of silver are grown on platinum electrodes by electrodeposition from a dense gaseous solution of silver nitrate in ammonia. Process is modification of hydrothermal process, and also differs from standard electrodeposition by permitting single crystals to be grown from hydrogen-bonded solvents.
    Keywords: MATERIALS
    Type: NPO-10440
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Electrolyte cells measure oxygen fugacities (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: System that uses calcia-stabilized zirconia-ceramic electrolyte in oxygen concentration cell can directly measure oxygen fugacity in vertical-quench furnace, redox-control system. System can independently vary temperature and oxygen fugacity during experiments, and can record these parameters as function of time.
    Keywords: MATERIALS
    Type: MSC-16089 , NASA Tech Briefs (ISSN 0145-319X); 1; 4; P. 581
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Using permeable membranes to produce hydrogen and oxygen from water (1975)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Concept may make it profitable to obtain hydrogen fuel from water. Laboratory tests have demonstrated that method enables decomposition of water several orders of magnitude beyond equilibrium state where only small amounts of free hydrogen are present.
    Keywords: MATERIALS
    Type: MSC-12600
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 6
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    Biphase Metal Electrodes For AMTEC (1988)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: New biphase metal electrodes for alkali metal thermoelectric converter (AMETEC) exhibit low electrical resistance, fast alkali metal transport, and good power densities and lifetime at operating temperatures from 1,100 to 1,160 K. Electrodes expected to last as long as 10,000 h in service without significant degradation. Made of two refractory metals, one forms strong bonds with sodium, other inert to sodium.
    Keywords: MATERIALS
    Type: NPO-16787 , NASA Tech Briefs (ISSN 0145-319X); 12; 10; P. 50
    Format: text
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    NASA TECHNICAL REPORTS
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