Electrical resistivity and thermal electromotive force of Ni75V25, Ni72V28, and Ni67V33 alloys at high temperatures

The temperature dependences of the electrical resistivity and thermal electromotive force (thermal e.m.f.) of the Ni–25 at % V, Ni–28 at % V, and Ni–33 at % V alloys in a temperature range of 300–1600 K have been reported; the dependences have been measured during slow heating and cooling of quenche...

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Bibliographic Details
Published inPhysics of metals and metallography Vol. 118; no. 6; pp. 546 - 552
Main Authors Akhtyamov, E. R., Gorbatov, V. I., Polev, V. F., Korshunov, I. G.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.06.2017
Springer Nature B.V
Subjects
Annealing
Chemistry and Materials Science
Electrical and Magnetic Properties
Electrical resistivity
Electromotive forces
Materials Science
Metallic Materials
Nickel base alloys
Order disorder
Phase transitions
Quenching
Scattering
Transformation temperature
Vanadium
Ni–V alloy
high temperatures
thermal electromotive force (thermal e.m.f.)
electrical resistivity
electron density of states
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Summary:The temperature dependences of the electrical resistivity and thermal electromotive force (thermal e.m.f.) of the Ni–25 at % V, Ni–28 at % V, and Ni–33 at % V alloys in a temperature range of 300–1600 K have been reported; the dependences have been measured during slow heating and cooling of quenched and annealed samples. It has been shown that, near the order–disorder phase-transformation temperature, the temperature dependences of the electrical resistivity of the Ni 75 V 25 and Ni 67 V 33 alloys demonstrate a kink (second-order phase transition) and a jump (first-order phase transition), respectively. The behavior of the experimental dependences is discussed in terms of the band Mott s–d scattering model.
ISSN:0031-918X
1555-6190
DOI:10.1134/S0031918X17040019