Abstract
Abstract
The chemical strain effect in solids is the deviation from linear elasticity due to the association and dissociation of point defects. Although to date this effect has been observed and studied only in Ce0.8Gd0.2O1,9, one may expect that it will be found in other ionic and mixed conductors containing a large concentration of point defects. In this work, some practical applications of materials exhibiting the chemical strain effect are discussed. Based on the example of Ce0.8Gd0.2O1,9, mechanical structures built from these materials should exhibit exceptional mechanical stability and are therefore very attractive for use as components of solid oxide fuel cells (SOFC) or other devices subjected to large and frequent temperature variations. The ability of these materials to withstand large strain without accumulating large stress also makes them potentially useful as flexible elements in micro-electromechanical systems (MEMS).
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Lubomirsky, I. Practical applications of the chemical strain effect in ionic and mixed conductors. Monatsh Chem 140, 1025–1030 (2009). https://doi.org/10.1007/s00706-009-0122-x
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DOI: https://doi.org/10.1007/s00706-009-0122-x