Microstructural characterization of Ni-Mn-Ga ferromagnetic shape memory alloy powders

Virgil C. Solomon, David Smith, YunJun Tang, Ami E. Berkowitz

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

The phase transformation and electron microscopic characterization of Ni-Mn-Ga ferromagnetic shape memory alloys (FSMA) powders produced by spark erosion were investigated. Powder quenched in liquid argon were solid spheres and in nitrogen were hollow spherical particles. It was observed that the electron microscopy observation of powders as sparked in nitrogen were highly disordered nanocrystalline grains and in liquid display extensive crystallinity. The results show that Ni-Mn-Ga powders were suitable for the development of magnetic-field-driven FSMA powder/polymer microcomposites.

Original languageEnglish (US)
Pages (from-to)6954-6956
Number of pages3
JournalJournal of Applied Physics
Volume95
Issue number11 II
DOIs
StatePublished - Jun 1 2004

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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