CHED 1224 |
| MgO powder properties, electrolyte and composition were optimized for electrolyte-MgO powder pellet deformation. Two different MgO powder sources were used to process the composites and each were calcined to 600, 800 and 1000 °C for 4 hours to control the particle size and surface area of the powder. The composites were then mixed with two different electrolytes, LiCl-KCl and LiCl-LiBr-KBr, and pressed into pellets of the same density. The melting points of the electrolytes range from 300-350°C and were mixed into MgO:electrolyte ratios of 65:35, 70:30 and 80:20. The deformation of the pellets was measured using a thermal mechanical analyzer and measured from room temperature to 550 °C under a constant load. These measurements were then used to calculate viscosity and modulus values at temperature. The powder properties and composite viscosity values are used to discuss proposed interaction mechanisms for electrolyte-MgO powder pellets at temperature. Sandia National Laboratories is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the U.S. Dept. of Energy under Contract DE-AC04-AL85000.
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Undergraduate Research Poster Session: Inorganic Chemistry
2:00 PM-4:00 PM, Monday, March 26, 2007 Hyatt Regency Chicago -- Riverside Center, Poster
Division of Chemical Education |