Low-temperature solution-mediated synthesis of polycrystalline intermetallic compounds from bulk metal powders

Nathaniel L. Henderson, Raymond Edward Schaak

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

A variety of binary intermetallic compounds of late transition metals with low-melting post-transition metals have been synthesized in bulk quantities by reacting molten metal dispersions with fine metal powders in hot polyalcohol solvents. Fourteen distinct intermetallics were formed using this technique: SbSn, FeSn2, Cu6Sn5, CoSn3, Ni 3Sn4, FeGa3, NiGa4, Cu 9Ga4, CoGa3, Ni2In3, InSb, In5Bi3, InBi, and Bi3Ni. Notable among these are a low-temperature phase (α-CoSn3), textured intermetallic powders with anisotropic morphologies (α-CoSn3 and FeSn2), and superconductors (Bi3Ni and In 5Bi3). Reaction pathway studies suggest that the molten low-melting metals diffuse into the larger higher melting powders, forming intermetallic compounds directly in a liquid-phase medium from bulk-scale powders of the constituent elements.

Original languageEnglish (US)
Pages (from-to)3212-3217
Number of pages6
JournalChemistry of Materials
Volume20
Issue number9
DOIs
StatePublished - May 13 2008

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Powder metals
Intermetallics
Powders
Transition metals
Melting
Metal melting
Temperature
Liquid metals
Dispersions
Superconducting materials
Molten materials
Liquids

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

Cite this

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title = "Low-temperature solution-mediated synthesis of polycrystalline intermetallic compounds from bulk metal powders",
abstract = "A variety of binary intermetallic compounds of late transition metals with low-melting post-transition metals have been synthesized in bulk quantities by reacting molten metal dispersions with fine metal powders in hot polyalcohol solvents. Fourteen distinct intermetallics were formed using this technique: SbSn, FeSn2, Cu6Sn5, CoSn3, Ni 3Sn4, FeGa3, NiGa4, Cu 9Ga4, CoGa3, Ni2In3, InSb, In5Bi3, InBi, and Bi3Ni. Notable among these are a low-temperature phase (α-CoSn3), textured intermetallic powders with anisotropic morphologies (α-CoSn3 and FeSn2), and superconductors (Bi3Ni and In 5Bi3). Reaction pathway studies suggest that the molten low-melting metals diffuse into the larger higher melting powders, forming intermetallic compounds directly in a liquid-phase medium from bulk-scale powders of the constituent elements.",
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Low-temperature solution-mediated synthesis of polycrystalline intermetallic compounds from bulk metal powders. / Henderson, Nathaniel L.; Schaak, Raymond Edward.

In: Chemistry of Materials, Vol. 20, No. 9, 13.05.2008, p. 3212-3217.

Research output: Contribution to journalArticle

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AU - Schaak, Raymond Edward

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AB - A variety of binary intermetallic compounds of late transition metals with low-melting post-transition metals have been synthesized in bulk quantities by reacting molten metal dispersions with fine metal powders in hot polyalcohol solvents. Fourteen distinct intermetallics were formed using this technique: SbSn, FeSn2, Cu6Sn5, CoSn3, Ni 3Sn4, FeGa3, NiGa4, Cu 9Ga4, CoGa3, Ni2In3, InSb, In5Bi3, InBi, and Bi3Ni. Notable among these are a low-temperature phase (α-CoSn3), textured intermetallic powders with anisotropic morphologies (α-CoSn3 and FeSn2), and superconductors (Bi3Ni and In 5Bi3). Reaction pathway studies suggest that the molten low-melting metals diffuse into the larger higher melting powders, forming intermetallic compounds directly in a liquid-phase medium from bulk-scale powders of the constituent elements.

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