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Formation and characterization of intermetallic Fe–Sn nanoparticles synthesized by an arc discharge method |
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| Authors: | J.P. Lei X.L. Dong X.G. Zhu M.K. Lei H. Huang X.F. Zhang B. Lu W.J. Park H.S. Chung |
| Affiliation: | aState Key Laboratory for Materials Modification by Laser, Ion and Electron Beams, Dalian University of Technology, Dalian, Liaoning 116023, China bSchool of Materials Science and Engineering, Dalian University of Technology, Dalian, Liaoning 116023, China cSchool of Mechanical & Aerospace Engineering, Gyeongsang National University, Tongyoung, Kyongnam 650-160, South Korea |
| Abstract: | Intermetallic Fe–Sn nanoparticles were prepared by a DC arc discharge method and investigated using X-ray diffraction, high-resolution transmission electron microscopy (HRTEM) and differential scanning calorimetry (DSC) analysis. The synthesized nanoparticles have a shell/core structure with an SnO2 shell of 5–10 nm in thickness and a core of polycrystalline intermetallic compounds. It was found that the intermetallic compounds FeSn2 and Fe3Sn2 were generated and coexist with the Sn phase as a single nanoparticle. The DSC analysis showed that Fe–Sn nanoparticles have high oxidation resistance in air. A mechanism of the nanoparticle formation was also interpreted on the basis of experimental results and thermodynamic principles. |
| Keywords: | A. Nanostructured intermetallics D. Microstructure E. Phase stability, prediction B. Oxidation |
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