Temperature dependency of the Fe–M (M – C, Ge, Sn) nanopowder heat capacity
https://doi.org/10.17073/1997-308X-2016-2-59-62
Abstract
Heat capacity of mechanically activated nano-crystalline carbonyl iron and iron nanocomposite samples with added isoelectronic sp-elements (sp – C, Ge or Sn) with the grain size of about 2–5 nm was determined in the 300–450 K temperature range using the IT-s-400 calorimeter. Thermo-physical studies of the specific heat temperature dependence were performed on 68 at.% Fe – 32 at.% M (M – Ge, Sn) and 95 at.% Fe – 5 at.% С nanocomposites with different mixture compositions. It was shown that penetration of sp-elements into nanocrystalline iron leads to significant changes in the heat capacity over the entire temperature range under investigation. The heat capacity turned out to depend strongly on the introduced sp-element and the degree of disorder in the material obtained.
About the Authors
L. D. Zagrebin
Izhevsk State Technical University (IzhSTU)
Russian Federation
Russian Federation
Dr. Sci. (Phys.-Math.)., Prof., Department of advanced materials and technologies,
426069, Izhevsk, Student str., 7
A. M. Artanov
Izhevsk State Technical University (IzhSTU)
Russian Federation
Postgraduate Student, Department of advanced materials and technologies
Russian Federation
Postgraduate Student, Department of advanced materials and technologies
S. M. Perevozchikov
NPO «Eksan»
Russian Federation
Russian Federation
Cand. Sci. (Phys.-Math.), Leading Engineer,
426068, Izhevsk, Baryshnikov name str., 53, office 120
I. Yu. Mukhametshina
Izhevsk State Technical University (IzhSTU)
Russian Federation
Leading Engineer of the Department of physics and optical engineering
Russian Federation
Leading Engineer of the Department of physics and optical engineering
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Review
For citations:
Zagrebin L.D., Artanov A.M., Perevozchikov S.M., Mukhametshina I.Yu. Temperature dependency of the Fe–M (M – C, Ge, Sn) nanopowder heat capacity. Powder Metallurgy аnd Functional Coatings (Izvestiya Vuzov. Poroshkovaya Metallurgiya i Funktsional'nye Pokrytiya). 2016;(2):59-62. (In Russ.) https://doi.org/10.17073/1997-308X-2016-2-59-62
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