500 °C 下 Fe-Pt-Ho 三元体系相关系的实验研究

IF 0.7 4区材料科学 Q4 METALLURGY & METALLURGICAL ENGINEERING

International Journal of Materials Research Pub Date : 2023-11-17 DOI:10.1515/ijmr-2022-0437

Ling Peng, YiFan Zhou, Bo Xu, Xinqiang Gao, Zheng-Fei Gu, Cheng-Fu Xu

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引用次数: 0

摘要

摘要利用 X 射线衍射、扫描电子显微镜和能量色散光谱技术研究了 500 ℃ 下 Fe-Pt-Ho 三元体系的相关系。在 500 ℃ 下，Ho3Pt4 相是稳定的，而且铁的引入不会导致 Ho3Pt4 相分解成相邻的两个相 HoPt 和 HoPt2。在铁铂二元体系中，α-Fe、Fe3Pt、FePt、FePt3 和 Pt 的单相范围分别为 0 至 10 % Pt、14 至 32 % Pt、33 至 63 % Pt、66 至 78 % Pt 和 82 至 100 % Pt。在 α-Fe、Fe3Pt、FePt、FePt3 和（Pt，Fe）相中，Ho 的最高固溶度分别小于 1.5%Ho、2%Ho、2%Ho、1.5%Ho 和 1.5%Ho。在 500 °C 时，构建了 Fe-Pt-Ho 三元合金相图的等温段，其中包括 19 个单相区、35 个两相区和 17 个三相区。没有发现新的三元化合物。

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Experimental study of the phase relations of the Fe–Pt–Ho ternary system at 500 °C

Abstract The phase relations of the Fe–Pt–Ho ternary system at 500 °C have been studied by using X-ray diffraction, scanning electron microscopy and energy dispersive spectroscopy techniques. The Ho3Pt4 phase is stable at 500 °C, and the introduction of Fe does not cause the Ho3Pt4 phase to be decomposed into the two neighbouring phases HoPt and HoPt2. The single phase ranges of α-Fe, Fe3Pt, FePt, FePt3 and Pt in Fe–Pt binary system are from 0 to 10 at.% Pt, 14 to 32 at.% Pt, 33 to 63 at.% Pt, 66 to 78 at.% Pt, and 82 to 100 at.% Pt, respectively. The highest solid solubility of Ho in the α-Fe, Fe3Pt, FePt, FePt3 and (Pt, Fe) phases is less than 1.5 at.% Ho, 2 at.% Ho, 2 at.% Ho, 1.5 at.% Ho and 1.5 at.% Ho, respectively. The isothermal section at 500 °C of the Fe–Pt–Ho ternary alloy phase diagram has been constructed, which consists of 19 single-phase regions, 35 two-phase regions and 17 three-phase regions. No new ternary compounds were found.

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来源期刊

International Journal of Materials Research 工程技术-冶金工程

CiteScore

1.30

自引率

12.50%

发文量

119

审稿时长

6.4 months

期刊介绍： The International Journal of Materials Research (IJMR) publishes original high quality experimental and theoretical papers and reviews on basic and applied research in the field of materials science and engineering, with focus on synthesis, processing, constitution, and properties of all classes of materials. Particular emphasis is placed on microstructural design, phase relations, computational thermodynamics, and kinetics at the nano to macro scale. Contributions may also focus on progress in advanced characterization techniques. All articles are subject to thorough, independent peer review.