Strength Characteristics of the Materials Based on n- and p-Type Solid Solutions of Bismuth and Antimony Chalcogenides Fabricated by Various Methods.

Autor: Ivanova, L. D., Nikhezina, I. Yu., Mal'chev, A. G., Baikin, A. S., Shevtsov, S. V.
Zdroj: Russian Metallurgy (Metally); Oct2023, Vol. 2023 Issue 10, p1404-1410, 7p
Abstrakt: Abstract—The mechanical compressive properties of the materials based on the n-type Bi2Te3–Bi2Se3 (20 mol % Bi2Se3) solid solution doped with Hg2Cl2 and the p-type Sb2Te3–Bi2Te3 (25 mol % Bi2Te3) solid solution doped with lead and excess tellurium (2 wt %) are studied. The samples are fabricated by hot pressing, extrusion, and spark plasma sintering of the powders prepared by melt spinning and grinding an ingot in a jet mill. Fractographs of cleavages are examined using electron scanning microscopy. The samples fabricated by the extrusion of a melt-spun powder have the highest ultimate strengths, = 168 MPa (n-type conduction material) and = 133 MPa (p-type conduction material). [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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