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首页> 外文期刊>Journal of Phase Equilibria and Diffusion >Experimental Investigation of the Isothermal Section in Fe-Gd-Pd Ternary System at 873 K
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Experimental Investigation of the Isothermal Section in Fe-Gd-Pd Ternary System at 873 K

机译:873 k的FE-GD-PD三元系统等温截面的实验研究

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Isothermal section of Fe-Gd-Pd ternary system at 873 K has been established by means of x-ray diffraction (XRD), differential scanning calorimetry (DSC), and scanning electron microscope (SEM) with energy disperse x-ray spectroscopy (EDS) in backscattered electron imaging modes. The isothermal section consists of 14 single-phase regions, 25 two-phase regions, and 12 three-phase regions. At 873 K, no ternary compound was found and the binary inermetallic compounds Gd3Pd and Fe23Gd6 are not stable, whereas the compound Fe23Gd6 decomposes into compounds Fe17Gd2 and Fe3Gd. The XRD and the SEM/EDS analysis show that there is almost no solubility of Gd in the FePd and FePd3 phases, and the solubilities of Pd in Fe17Gd2, Fe3Gd and Fe2Gd and Fe in GdPd2, alpha-Gd3Pd4 and Gd3Pd2 are all less than 1 at.%. Meanwhile, the solubilities of Fe in GdPd3, alpha-GdPd and Gd7Pd3 are determined to be as high as 1.37, 5.31, and 4.18 at.% Fe, respectively.
机译:通过X射线衍射(XRD),差示扫描量热法(DSC)和扫描电子显微镜(SEM),建立了873 k的Fe-Gd-PD三元系统的等温部分,以及具有能量分散X射线光谱的扫描电子显微镜(EDS )以反向散射的电子成像模式。 等温部分由14个单相区域,25个两相区域和12个三相区域组成。 在873K中,未发现三元化合物,二元素物化合物Gd3PD和Fe 2 3 Gd6不稳定,而化合物Fe23GD6分解成化合物Fe17GD2和Fe3GD。 XRD和SEM / EDS分析表明,FEPD和FEPD3相中几乎没有GD溶解性,并且PD在Fe17GD2,Fe3GD和Fe2GD和Fe中的PD溶解度均小于1 在。%。 同时,将GDPD3,α-GDPD和GD7PD3中的Fe的溶解度确定为高达1.37,5.31和4.18。%Fe。

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