Merits of the refractory metals single crystals in application to the TFE

Development of a TFE with a long-term service life and a high electric power requires a substantiated choice and, in some cases, production of modern structural materials having improved operating characteristics. A lot of investigations like that including material-scientific, technological and calculated-and-engineering developments have been performed in RI of SIA LUTCH. A number of modern structural materials on molybdenum, tungsten and niobium single-crystal base has been developed and introduced into the TFE designs in course of this work. This report covers the results of experimental and calculated investigations justifying the advantages of the above materials over the similar polycrystal ones