Projection of the solidus surface of the Fe–Mo–C system in the composition range 0–40 at.% C

Abstract

The solidus projection of the Fe-Mo-C system in the composition range 0−40 at.% C is constructed for the first time using EDX, SEM, HT-DTA, HT-XRD, Pirani-Alterthum method, Vickers microhardness measurement, and CALPHAD modeling technique. It is established that there are M intermetallide is a linear phase in terms of carbon on the solidus surface with the homogeneity range Fe 38.2-45.3 Mo 47.5-40.4 C 14.3 for metal components, within which the lattice parameters change from 1.1152(3) to 1.1072(8) nm. CALPHAD modeling shows that, besides the above-mentioned equilibria on the solidus surface, there are three-phase equilibria with participation of orthorhombic stabilized (Fe

Molybdenum recovery as alloying agent from waste molybdenum solution

“…Thermodynamic of cast iron alloying process with MoO3 is basically chemical reduction of the molybdenum (VI)-oxide in the presence of triiron carbide to dimolybdenum carbide. Cast iron could be alloyed with molybdenum or his oxides as it confirms phase diagram of Fe-Mo-C system, Figure 1 [18]. Free energy of this multicomponent system changes almost linearly as a function of temperature.…”

“…Solidus surface projection of the Fe-Mo-C phase diagram [18] Slika 1. Solidus projekcija faznog dijagrama Fe-Mo-C [18] (1) [19,20] Tabela 1.…”

“…Solidus surface projection of the Fe-Mo-C phase diagram [18] Slika 1. Solidus projekcija faznog dijagrama Fe-Mo-C [18] (1) [19,20] Tabela 1. Promena slobodne energije kao funkcija temperature za reakciju (1) [19,20] Using the Mo (VI) compounds for producing high speed steels may be met in papers [21,22] but there were not earlier attempts of alloying the grey cast iron with molybdenum (VI)-oxide.…”

Electron Theory Calculation of Thermodynamic Properties of Steels and Its Application to Theoretical Phase Diagram of the Fe–Mo–B Ternary System

“…(2) Compounds of Which Ground Structures Did Not Agree with the Experimental Results For Fe 3 Mo 2 (R), FeMo (σ), FeMo 8 B 11 (τ 3 ) there was no corresponding structure in the set of structures searched by GA. Among them, R is composed of 159 atoms, 18) and σ is a disordered structure of a large unit cell composed of 30 atoms. 19) In this study, R was not found because the structure search was conducted by limiting the total number of atoms in the unit cell to 32.…”