Abstract
FeSi_2 thermoelectric elements are expected for high temperature applications because, of its low cost, nontoxic and superior oxidation resistance. The possibility of production of FeSi_2 thermoelectric conversion module by spark plasma sinter-joining method was examined. In addition, the thermoelectric conversion characteristics was evaluated by using the module processed in various kinds of shape. It was clarified that the p-n joining with sintering from powder was possible by spark plasma sinter-joining method. The module with excellent thermoelectric conversion characteristics was obtained by the direct joining further than the sinter-joining. It was made clear that the Seebeck coefficient depended on the shape of module.
