Phase equilibria of the Al-Co-Er system at 400°C and 600°C

Abstract

The 400?C and 600?C isothermal sections of the Al-Co-Er system were studied assisted with X-ray diffraction (XRD), scanning electron microscopy (SEM) and electron probe microanalysis (EPMA) techniques. 18 three-phase fields were identified in the 400?C isothermal section. The maximum solid solubilities of Al in Co3Er and Co2Er were 13.93 at.% and 16.13 at.%, respectively. Whereas the maximum solid solubilities of Co in Al2Er, Al2Er3 and AlEr2 were 6.93 at.%, 6.65 at.%, and 6.49 at.%, respectively. And the solid solution range of ? is from 22.22 at.% Al to 44.44 at.% Al. While the 600?C isothermal section included 20 three-phase fields. The maximum solid solubilities of Al in Co17Er2 and Co7Er2 were 10.17 at.% and 10.24 at.%, respectively. Whereas the maximum solid solubilities of Co in Al2Er and Al2Er3 were 3.63 at.% and 2.01 at.%, respectively.

Quantum chemistry and kinetics of hydrogen sulphide oxidation

“…The main feature of TUMME is its ability to calculate those microcanonical flux coefficients with the inclusion of torsional and multi-structural anharmonicity, variational, and curvature tunnelling corrections, resulting in accurate rate constants. First, the high pressure limit rate constants for each of the multiple steps of the selected reactions that have a saddle point were calculated with the Polyrate 2016-2A software 35 using the canonical variational transition state theory (CVT) 36,37 with small curvature tunneling corrections (SCT) and the harmonic oscillator approach (HO), 38 which is defined as…”

“…First, the high pressure limit rate constants for each of the multiple steps of the selected reactions that have a saddle point were calculated with the Polyrate 2016-2A software 35 using the canonical variational transition state theory (CVT) 36,37 with small curvature tunneling corrections (SCT) and the harmonic oscillator approach (HO), 38 which is defined as…”

Optimization strategies of high-entropy alloys for electrocatalytic applications

“…HEAs can be divided into FCC-type (face-centered cubic structure), 34 BCC-type (body-centered cubic structure), 35 HCP-type (hexagonal close-packed structure), 36 amorphous type and intermetallic compound type. 37,38 Different atoms randomly occupy the lattice position to form a simple solid solution (Fig. 1c).…”

Phase Equilibria of the Fe–Cr–Er Ternary System in the Range 973–1273 K

“…To further increase the concentration of oxide particles to improve the material properties, it is necessary to add other rare earth elements. Er not only forms oxide particles but can also form magnetic intermetallic compounds with transition metals, which can play a magnetic refrigeration role and prevent the reactor from overheating and causing accidents [ 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 ]. Therefore, ODS steel containing the Fe–Cr–Er system is a potential nuclear reactor cladding material.…”