Peculiarities of production n-Bi2(Te,Se)3 and p-(Bi,Sb)2Te3 in conditions of structural superplasticity

Superplasticity is important, primarily, due to the fact that intensive plastic deformations can be created under low loads, with the formation of material with a homogeneous structure in cross-section. The establishment of conditions providing for the apparent superplasticity acquires special importance for the realization of plastic deformation of thermoelectric materials. For this purpose the authors have investigated the process of hot extrusion of n-Bi₂(Te,Se)₃ and p-(Bi,Sb)₂Te₃ metal-ceramic billets through conical matrix both in isobaric and isothermic conditions