This paper is dedicated to the Calphad modelling of Cr–Fe–Nb–Sn–Zr quinary system. In previous papers, thermodynamic Cr–Nb–Sn–Zr quaternary system, Fe–Sn–Zr and Fe–Nb–Zr ternary systems as well Fe–Nb binary system were carried out. Since no experimental data available for Cr–Fe–Sn Fe–Nb–Sn systems, new partial isothermal sections have been measured at 1073K 973K, respectively. addition these da...

Abstract The Fe-Cr metastable miscibility gap has been studied by high-precision thermal treatments, Vickers micro-hardness (HV) measurements, and atom probe tomography (APT). Thermodynamic modeling further supplements the experimental work. results obtained show that recent thermodynamic descriptions of found in literature generally overestimates consolute temperature. We can source ambiguity ...

The kinetics and mechanism of bainite transformation have been studied in Fe-Cr-Mo-V-Ti-C steel high speed dilatometry backed by thermodynamic analysis. The complete transformation of austenite, however, has not occurred at any reported temperature. Obtained results confirm the incomplete reaction phenomenon with the cessation of the bainite transformation well before the paraequilibrium is ach...

The influence of Cr and Al content on the oxidation behaviour FeCr(Al) model alloys after breakaway at 600 °C underlying mechanisms were investigated in detail with thermogravimetrical analysis (TGA), thermodynamic calculations advanced electron microscopy. results showed that a Cr-content ≥18 wt% drastically reduced growth rate Fe-rich oxide scale, formed oxidation, for FeCrAl but not FeCr all...

The article contains computational data of electronic structure and crystal stability of two sigma-phases, namely Fe-Cr-Co and Fe-Cr-Ni, using the Korringa-Kohn-Rostoker method (KKR) for electronic band structure calculations. Total energy values, ET , calculated for the number of ordered unit cells with various atomic concentrations and sublattice occupancies are reported. In parallel, obtaine...

Purpose: Purpose of this paper is investigation of influence of the surface processing by laser method on the cavitation performance of the Fe-Cr-Mn and Fe-Cr-Co alloys. This kind of alloys are frequently used in Polish power plants to routine repairs of damaged blades working under cavitation loading. Design/methodology/approach: Padding welds were tested for three cases: without additional pr...

Under irradiation, chemical species can redistribute in ways not expected from equilibrium behavior. In oxide-dispersed ferritic alloys, the phenomenon of irradiation-induced Cr redistribution at the metal/oxide interfaces has drawn recent attention. Here, the thermal and irradiation stability of the FeCr/Y2O3 interface has been systematically studied. Trilayer thin films of 90 nm Fe - 20 at.% ...

Alkylation of benzene with 1-dodecene catalyzed by metal-pillared montmorillonite (M-PILC, M = Al, Cr, Fe, Al-Fe, Fe-Cr) was successfully carried out. The formation of linear monoalkylbenzenes in 98% yield in the presence of Fe-PILC during two hours is remarkable. The 2-phenydodecane obtained with 30% concentration within the other 3-, 4-, 5-, and 6-monosubstituted products is similar to that o...

The effect of the presence of an Fe-Cr alloy metallic interconnect on the performance and stability of La(0.8)Sr(0.2)MnO3 (LSM) oxygen electrodes is studied for the first time under solid oxide electrolysis cell (SOEC) operating conditions at 800 °C. The presence of the Fe-Cr interconnect accelerates the degradation and delamination processes of the LSM oxygen electrodes. The disintegration of ...

Metal-superoxo species are ubiquitous in metalloenzymes and bioinorganic chemistry and are known for their high reactivity and their ability to activate inert C-H bonds. The comparative oxidative abilities of M-O2(.-) species (M = Cr(III), Mn(III), Fe(III), and Cu(II)) towards C-H bond activation reaction are presented. These superoxo species generated by oxygen activation are found to be aggre...