Effect of elementary Se and Te
on the sign of the temperature coefficient of electroconductivity
of metallic Sb and Bi
Chem.
Met. Alloys 8 (2015) 39-42
https://doi.org/10.30970/cma8.0302
Oleg N. MUSTIATSA, Vladimir I. LYSIN,
Irene V. KOVALENKO
The effect of Se and Te additions on the electroconductivity of molten Sb
and Bi was investigated. The compositions of the systems metal (Sb, Bi) – chalcogen (Se, Te),
where sign inversion of the temperature coefficient of electroconductivity
takes place, were determined. Changes of the values and character of the
conductivity in the investigated systems are explained by chemical interaction
of the components and by modification of the chemical bonds from metallic (for Sb and Bi) to covalent, characteristic of chalcogenides.
Electroconductivity polytherms
for Sb–Se melts: 1 – 0, 2 – 4.0, 3 – 14.0 at.% Se.
Keywords
Electroconductivity / Temperature coefficient / Melts