This study assesses the potential use of thermally sprayed dicalcium diiron pentaoxide (Ca2Fe2O5) for thermoelectric generators. Ca2Fe2O5 coatings up to 2 mm thick were produced by atmospheric plasma spraying and examined. Compared to the bulk material, the coatings exhibit lower thermal and electrical conductivity. The Seebeck coefficient could not be measured, and the thermoelectric performance was inadequate. The limitations derive not only from the thermal spray process, but also the material itself.

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