Synthesis and characterization of macrocomposites based on nickel-coated quasi-crystalline Al-Cu-Fe powder

A. S. Ivanov, V. S. Kruglov, A. F. Pal, A. N. Ryabinkin, A. O. Serov, D. S. Shaitura, A. N. Starostin, A. V. Gavrikov, O. F. Petrov, V. E. Fortov

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Abstract

Disperse composite materials consisting of quasi-crystalline Al-Cu-Fe particles covered by nickel nanolayers have been obtained using a dusty plasma trap coating technology. These powders were processed into macrocomposites by cold pressing with subsequent sintering in hydrogen. The macrocomposites were studied by the electron microscopy, electron-probe microanalysis, and X-ray diffraction techniques. It is established that sintering at ~750°C yields a high-strength macrocomposite that is not fractured under tribological testing conditions. Despite the fact the samples sintered at 750°C contain about 50 wt % of β phase, their friction coefficient is close to that of Al-Cu-Fe quasi-crystals.

Original languageEnglish
Pages (from-to)917-920
Number of pages4
JournalTechnical Physics Letters
Volume37
Issue number10
DOIs
StatePublished - Oct 2011
Externally publishedYes

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