Effect of Carbon on the Physical and Structural Properties of Boride Fe2B

N.Yu. Filonenko; O.M. Galdina

doi:10.15330/pcss.17.2.251-255

Authors

N.Yu. Filonenko Dnipropetrovsk State Medical Academy
O.M. Galdina Oles Honchar Dnipropetrovsk national university

DOI:

https://doi.org/10.15330/pcss.17.2.251-255

Keywords:

iron borideFe2B, Fe-В alloys, free energy of the phase, carbon solubility

Abstract

For Fe-В and Fe-В-С system alloys one of the structure constituent is iron boride Fe₂B but in the literature there is no information on carbon solubility limit in iron boride Fe₂В. The object of this paper is to reveal the effect of carbon on the physical and structural properties of boride Fe₂В.

Investigation was performed for the specimens with carbon content of 0,05 - 0,80 % (wt.) and boron content of 9,0 - 15,0 % (wt.), the rest is iron. To determine the physical properties of alloys we use microstructure analysis, X-ray microanalysis and X-ray structural analysis.

It is found that carbon doping of boride Fe₂В leads to a feeble lattice strain and effects on the physical characteristics of boride. We estimate the free energy of boride Fe₂B and carbon content in Fe₂B phase. Carbon can substitute up to 3 – 8 % of boron atoms in Fe₂B phase depending on the temperature which is verified by experimental data. The carbon solubility in this phase is also examined.

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