Experimental determination of the equilibrium relationship of Fe–Pd–Pr ternary system at 773 K
Autor: | Yu Du, Guang Hui Rao, Lin Li, Gang Cheng, C. R. Li, X. F. Wu, Yuanyuan Sun |
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Rok vydání: | 2015 |
Předmět: |
Ternary numeral system
Chemistry Mechanical Engineering Metals and Alloys Analytical chemistry Crystal structure Crystallography chemistry.chemical_compound Differential scanning calorimetry Mechanics of Materials Ternary compound X-ray crystallography Materials Chemistry Binary system Solubility Phase diagram |
Zdroj: | Journal of Alloys and Compounds. 652:55-62 |
ISSN: | 0925-8388 |
Popis: | The solid-state phase equilibria in the Fe–Pd–Pr ternary system at 773 K were investigated by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), differential scanning calorimetry (DSC) and energy dispersion spectroscopy (EDS) techniques. It is found that the 773 K isothermal section consists of 14 single-phase regions, 26 two-phase regions, 13 three-phase regions. At 773 K, it is observed that the highest solubility of Pr in FePd and FePd 3 are 1.4 and 1.3 at.% Pr, respectively. The solid solubility of Fe in Pd 5 Pr, Pd 3 Pr, Pd 2 Pr, Pd 3 Pr 2 , Pd 4 Pr 3 , PdPr, Pd 3 Pr 7 , and that of Pd in Fe 17 Pr 2 are very little and less than 1 at.%. In this work, at 773 K, the homogeneity ranges of phases FePd and FePd 3 in the Fe–Pd binary system have been determined to be 49.6–61.1 at.% Pd for FePd and 62.54–80.55 at.% Pd for FePd 3 , respectively. A new ternary compound Pr 6 Fe 13 Pd with space group I 4/ mcm , a = 0.80900 (7) and c = 2.24401 (4) nm was discovered. |
Databáze: | OpenAIRE |
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