Life Studies of Metal Films on Beta Alumina at High Temperature
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BetaAlumina AMTEC↗
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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Mo/Na(sub xtio)2 Mixed Conducting Electrodes for the Alkali Metal Thermal to Electric Converter
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AMTEC mixed conductor titanium dioxide molybdenum↗
Survey of Technologies Available to Detect Small Leaks on the Trans Alaska Pipeline
The Alyeska Pipeline Service Company (Alyeska) operates the 1290 kilometer-long Trans Alaska Pipeline System (TAPS).
pipeline leak detection in situ sensing↗
Life Studies of Metal Films on Beta-Alumina at High Temperature
Applications of metallic films on sodium beta-alumina solid electrolyte (BASE) ceramic in technology for the alkali metal thermal to electric converter (AMTEC) include both electrode and metallization functions.
AMTEC beta-alumina Thermal-to-Electric Energy Conv↗
Metallurgical examination of an AMTEC power unit
Two AMTEC power units fabricated by Advanced Modular Power Systems, Inc. using a cold end condenser manufactured by Creare, Inc. which operate for 342 hours and 575 hours were dissected and examined.
AMTEC↗
Reactivity of thin metal films on sodium beta alumina ceramic in high temperature, low pressure sodium vapor
Electrochemical techniques including impedance spectroscopy are routinely used to test the performance of AMTEC electrodes.
AMTEC space power↗
Mathematical modeling of the impedance of single and multi-tube AMTEC units
AMTEC power systems are designed for use on extended space missions. During the lifetime of such missions the power available for the spacecraft will depend on the degradation of the system performance. Development of a tool that allows monitoring of the system degradation will provide an aid in dtermining the condition of the power source.
AMTEC modeling↗
Second generation electronic nose: real-time air quality monitoring in human habitat
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electronic nose chemical sensor polymer-carbon com↗
Temperature effects on polymer-carbon composite sensors
At JPL we have investigated the effects of temperature on polymer-carbon black composite sensors. While the electrical properties of polymer composites have been studied, with mechanisms of conductivity described by connectivity and tunneling, it is not fully understood how these properties affect sensor characteristics and responses.
JPL Enose polymer-carbon composite sensor temperat↗
Correlating electronic nose sensor response for air-quality monitoring: an experimental and modeling study
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electronic nose polymer-carbon composite molecular↗
Evaluating polymer/polymer-carbon black composite coated quartz crystal microbalance sensor response: an experimental and molecular modeling investigation
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electronic nose polymer-carbon composite molecular↗
Using temperature effects on polymer-composite sensor arrays to identify analytes
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electronic nose polymer-carbon composite↗
Application of a Fundamental Model of the Exchange Current to Performance of Titanium Nitride, Rhodium-Tungsten, and Molybdenum Electrodes in the Alkali Metal Thermal-to-Electric Converter
AMTEC cells are under development as power resources for future outer planetary robotic space missions, where they must operate for very long times.
Fundamental Model Thermal-to-Electric Converter↗
Thermal Stability of Beta-Alumina Solid Electrolyte Under AMTEC Operating Conditions
A critical component of alkali metal thermal-to electric converter (AMTEC) devices for long duration space missions is the sodium beta-alumina solid electrolyte ceramic (BASE), for which there exists no substitute.
AMTEC beta-alumina solid electrolyte ceramic↗
A Quantitative Model for the Exchange Current of Porous Molybdenum Electrodes on Sodium Beta-Alumina in Sodium Vapor
This paper presents a model of the exchange current developed for porous molybdenum electrodes on sodium beta-alumina ceramics in low pressure sodium vapor, but which has general applicability to gas/porous metal electrodes on solid electrolytes.
porous molybdenum electrodes sodium beta-alumina s↗
The Thermal Decomposition of Sodium Beta-Alumina Solid Electrolyte Ceramic
Sodium beta-alumina is one of the best characterized solid electrolytes, but its high temperature chemistry in the range 700K to 1800K is only partly understood.
decomposition sodium beta-alumina solid electrolyt↗
Integrated optics ring-resonator chemical sensor for detection of air contamination
We report a silicon nitride-based ring resonator chemical sensor with sensing polymer coating. Its sensitivity to isopropanol in air is at least 50 ppm - well under the permissible exposure level of 400 ppm.
integrated optics sensors↗
Expanding the analyte set of the JPL Electronic Nose to include inorganic compounds
An array-based sensing system based on 32 polymer/carbon composite conductometric sensors is under development at JPL. Until the present phase of development, the analyte set has focuses on organic compounds and a few selected inorganic compounds, notably ammonia and hydrazine.
polymer-carbon composite↗