National Research University «MISiS»

V. T. Bublik, A. I. Voronin, N. Yu. Tabachkova

OOO NPO Kristall

V. F. Ponomarev

Destruction of the thermoelectric material on the basis of bismuth telluride under high temperatures, which prevents the use of these materials for a direct conversion of thermal energy into electrical energy, are revealed. Mechanisms of the occurring process are proposed. It is shown that the industrial technology of spark cutting leads to appearance of the damaged layer, which facilitates the penetration of solder into the volume of the thermoelectric material in subsequent soldering of thermoelements.

1. Zebarjadi, M. Perspectives on thermoelectrics: from fundamentals to device applications / M. Zebarjadi, K. Esfarjani, M. S. Dresselhaus, Z. F. Ren, G. Chen // Energy and Environmental Sci. − 2012. − N 5.
2. Castillo, E. E. Thermoelectric characterization by transient Harman method under nonideal contact and boundary conditions / E. E. Castillo, C. L. Hapenciuc, T. Borca−Tasciuc // Rev. Sci. Instrum. − 2010. − V. 81.
3. Keawprak, N. Thermoelectric properties of Bi(2)Se(x)Te(3−x) prepared by Bridgman method / N. Keawprak, S. Lao−Ubol, C. Eamchotchawalit, Z. M. Sun // J. Alloys and Compounds. − 2011. − V. 509. − P. 9296—9301.
4. Bublik, V. T. Vliyanie usloviy vyrashchivaniya slitkov tverdykh rastvorov Bi₂Te_2,7Se_0,3 na anizotropiyu fizicheskikh svoystv / V. T. Bublik, A. I. Voronin, E. A. Vygovskaya, V. F. Ponomarev, N. Yu. Tabachkova, O. V. Toropova // Izv. vuzov. Materialy elektron. tekhniki. − 2010. − № 1. − S. 50—54.
5. Voronin, A. I. Structure of profiled crystals based on solid solutions of Bi₂Te₃ and their X−ray diagnostics. / A. I. Voronin, V. T. Bublik, N. Yu. Tabachkova, Yu. M. Belov // J. Electronic Mater. − 2011. − V. 40. − R. 794.
6. Bublik, V. T. Ispol'zovanie analiza tekstury v krupnozernistykh plastinakh khal'kogenidov Bi i Sb dlya opredeleniya formy fronta kristallizatsii i glubiny narushennykh poverkhnostnykh sloev / Yu. M. Belov, V. T. Bublik, A. I. Voronin, E. A. Vygovskaya, V. F. Ponomarev, N. Yu. Tabachkova, O. V. Toropova // Zavodskaya laboratoriya. Diagnostika materialov. − 2009. − № 5. − S. 28—31.