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01.03.2023 | Original Article

Low-temperature synthesis of Sm-Fe binary compounds by reduction-diffusion process using an eutectic salt solvent

verfasst von: Jungryang Kim, Shusuke Okada, Kenta Takagi

Erschienen in: Rare Metals | Ausgabe 5/2023

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Abstract

In this study, the temperature of the low-temperature reduction-diffusion (LTRD) process was successfully decreased to below 600 °C by introducing LiCl-KCl eutectic molten salt with a low eutectic point (352 °C) as a solvent for Ca reductant. Therefore, the Sm-Fe binary compounds, which were synthesizable at previously-unexplored low temperatures by the LTRD process using LiCl-KCl eutectic molten salt, were investigated, including whether a new metastable or ThMn₁₂-type Sm-Fe binary phase was formed. The Sm-Fe phase transitions of the Sm-Fe binary compounds at a low temperature were identified, and it was found that MgCu₂-type Sm-Fe, PuNi₃-type Sm-Fe and TbCu₇-type Sm-Fe phases were synthesized and stable at 400, 500 and 550 °C respectively. Although no new metastable Sm-Fe and ThMn₁₂-type Sm-Fe compounds were discovered in this study, this work can demonstrate that it is possible to synthesize the Sm-Fe phase at very low temperatures by the LTRD process for the first time.

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Vorheriger Artikel Bending mechanical properties of W/TiN/Ta composites with interfacial TiN coatings

Nächster Artikel Microstructural evolution and mechanical behavior of in situ synthesized MgAl2O4 whiskers reinforced 6061 Al alloy composite after hot extrusion and annealing

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Titel: Low-temperature synthesis of Sm-Fe binary compounds by reduction-diffusion process using an eutectic salt solvent
verfasst von: Jungryang Kim
Shusuke Okada
Kenta Takagi
Publikationsdatum: 01.03.2023
Verlag: Nonferrous Metals Society of China
Erschienen in: Rare Metals / Ausgabe 5/2023
Print ISSN: 1001-0521
Elektronische ISSN: 1867-7185
DOI: https://doi.org/10.1007/s12598-022-02219-3

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