Experimental study of the phase relations of the Fe–Pt–Ho ternary system at 500 °C
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Ling Peng
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Zheng-Fei Gu
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.
Funding source: National Natural Science Foundation of China
Award Identifier / Grant number: Unassigned
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Research ethics: The local Institutional Review Board deemed the study exempt from review.
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Author contributions: The authors have accepted responsibility for the entire content of this manuscript and approved its submission.
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Competing interests: The authors state no conflict of interest.
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Research funding: This work was supported by the National Natural Science Foundation of China (Grant No: 52171054, 52361004) and the Guangxi Natural Science Foundation (No: 2021GXNSFAA220081).
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Data availability: The raw data can be obtained on request from the corresponding author.
References
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Articles in the same Issue
- Frontmatter
- Original Papers
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- Experimental study of the phase relations of the Fe–Pt–Ho ternary system at 500 °C
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- News
- DGM – Deutsche Gesellschaft für Materialkunde
Articles in the same Issue
- Frontmatter
- Original Papers
- Nanocrystalline PbS thin film produced by alkaline chemical bath deposition: effect of inhibitor levels and temperature on the physicochemical properties
- Effect of laser power on microstructure and tribological behavior of laser clad NiCr coating
- Mechanical characterization and evaluation of pitting corrosion resistance of a superferritic stainless steel model alloy 25Cr–6Mo–5Ni
- Factors dictating the extent of low elongation in high sulfur-containing bainitic steels
- Effect of process parameters on mechanical properties and wettability of polylactic acid by fused filament fabrication process
- Critical systematic investigation of the Cd–Ce system: phase stability and Gibbs energies of formation and equilibria via thermodynamic description
- Experimental study of the phase relations of the Fe–Pt–Ho ternary system at 500 °C
- Ultraviolet-B radiation from Gd (III) doped hardystonite
- Photoluminescence features of trivalent holmium doped Ca2La8(SiO4)6O2 phosphors
- Thermal stability of Al3BC3 powders under a nitrogen atmosphere
- News
- DGM – Deutsche Gesellschaft für Materialkunde
