Properties of metallic cements formed upon the interaction of mechanochemically synthesized copper alloys with liquid gallium and its eutectics: Interaction of Cu/Bi composites with liquid gallium |
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| Authors: | T F Grigor’eva S A Kovaleva A P Barinova V Šepelák P A Vityaz’ N Z Lyakhov |
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| Affiliation: | 1.Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch,Russian Academy of Sciences,Novosibirsk,Russia;2.Joint Institute of Mechanical Engineering,National Academy of Sciences,Minsk,Belarus;3.Karlsruhe Institute of Technology,Institute of Nanotechnology,Eggenstein-Leipoldshafen,Germany |
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| Abstract: | Atomic force microscopy and scanning electron microscopy were used to study the structure of metallic cements that are formed
upon the interaction of Cu/Bi mechanocomposites with liquid gallium at room temperature. It has been established that the
intermetallic compound CuGa2, which is the basic component of this metallic cement, is formed as tetragonal crystals 1–4 μm in size with a characteristic
layeredspiral growth. The second phase—bismuth—is adsorbed at the growth steps in the form of disperse formations 70–250 nm
in size; local bismuth accumulations of micron size are also observed. It is shown that in the metallic cement that is formed
at room temperature regions of incompletely reacted Cu/Bi composite are retained. |
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