Documents

DOI

  • Alina K. Mazeeva
  • Artem Kim
  • Nikolay E. Ozerskoi
  • Aleksey I. Shamshurin
  • Nikolay G. Razumov
  • Denis V. Nazarov
  • Anatoliy A. Popovich

In this paper, a novel approach to obtain a ferromagnetic material for smart applications was implied. A combination of mechanical alloying (MA) and plasma spheroidization (PS) was applied to produce Ni36 Al27 Co37 spherical powder. Then its structure was systematically studied. It was shown that homogenization of the structure occurs due to mechanism of layered structure formation. The dependence of the lamella thickness on the energy dose input at MA was defined. It was found that 14.7 W·h/g is sufficient to obtain lamella thickness of 1 µm and less. The low-energy mode of a planetary mill with rotation speeds of the main disk/bowl of 150/−300 rpm makes it possible to achieve a uniform element distribution upon a minimal amount of impurity. During MA in an attritor Ni3 Al-type intermetallic compounds are formed that result in more intensive degradation in particle size. Plasma spheroidization of the powder after MA allowed obtaining Ni36 Al27 Co37 spherical powder. The powder had a fine β + γ-structure. The particle size distribution remains almost unchanged compared to the MA stage. Coercivity of the powder is 79 Oe. The powder obtained meets the requirements of selective laser melting technology, but also can be utilized as a functional filler in various magnetic composites.

Original languageEnglish
Article number1557
Pages (from-to)1-14
Number of pages14
JournalMetals
Volume11
Issue number10
DOIs
StatePublished - Oct 2021

    Scopus subject areas

  • Metals and Alloys
  • Materials Science(all)

    Research areas

  • 4D-technology, Ferromagnetic smart alloy, Mechanical alloying, Plasma spheroidization, Spherical powder

ID: 86114106