Investigation of the physical properties of iron nanoparticles in the course of the melting and solidification

The processes of iron-nanoparticles melting and iron-nanodroes solidification have been studied under different thermal actions. The determined values of the phase-transition temperatures for particles with radii of 1.5–4 nm agree with the data calculated by other authors. In the course of calculati...

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Bibliographic Details
Published in:Physics of metals and metallography 2017-06, Vol.118 (6), p.572-578
Main Authors: Fedorov, A. V., Shul’gin, A. V., Lavruk, S. A.
Format: Article
Language:English
Subjects:
Analysis
Chemistry and Materials Science
Diffusion
Investigations
Iron
Materials Science
Mathematical analysis
Melting
Metallic Materials
Molecular dynamics
Nanoparticles
Particle size
Phase Transformations
Phase transitions
Physical properties
Solidification
Specific heat
Structure
Temperature
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Summary:The processes of iron-nanoparticles melting and iron-nanodroes solidification have been studied under different thermal actions. The determined values of the phase-transition temperatures for particles with radii of 1.5–4 nm agree with the data calculated by other authors. In the course of calculating the solidification of iron nanoparticles, the dependence of the solidification temperature on the rate of heat removal has been found and the hysteresis of the phase transition has been demonstrated. Based on the determined caloric curves, the heat capacity of the particles has been found and their approximation in the form of dependences on temperature and particle size has been suggested.
ISSN:0031-918X
1555-6190
DOI:10.1134/S0031918X17040020