EFFECT OF CARBON ON PHYSICAL AND STRUCTURAL PROPERTIES OF FеB IRON MONOBORIDE
Abstract
In this paper we study effect of carbon on structural and physical properties of FeB iron monoboride in Fe-B system alloys with carbon content of 0,05-0,90% (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. Carbon doping of FeВ iron monoboride leads to a feeble lattice strain and effects on the physical characteristics of boride. Using the quasi-chemical method we estimate the temperature dependence of the boride free energy and carbon solubility limit in FeB monoboride. Carbon can substitute up to 4% of
boron atoms in FeB phase depending on the temperature. At high temperatures the carbon solubility in this phase increases. The obtained estimated data is in good agreement with experiment.
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References
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