Mechanically Milled Iron Alloys for High-Temperature Magnetic and Structural Applications

Abstract

Mechanically-milled alloys of iron with cobalt ("Hyperco")and aluminum have been fabricated with a puck-and-saucer mill, and have been studied with the bulk magnetization, differential scanning spectrometry, neutron scattering and muon spin rotation techniques. One as-yet-unresolved problem is that of compaction. Two major discoveries concerning iron-aluminum alloys were made during this reporting period, inverse melting, and the presence of incommensurate static spin-density waves. A laboratory for preparation and characterization of magnetically-ordered materials has been assembled and is still under development. It includes two high-precision field-gradient magnetometers, a differential scanning calorimeter, the puck-and-saucer mill, an annealing furnace, and associated electronics and computers. Several papers were published during this reporting period, and two graduate students are doing their thesis research in this laboratory.

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Document Details

Document Type
Technical Report
Publication Date
Aug 29, 2003
Accession Number
ADA416833

Entities

People

  • Anthony S. Arrott
  • Carey E. Stronach
  • David R. Noakes

Organizations

  • Virginia State University

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Alloys
  • Aluminum Alloys
  • Annealing
  • Crystal Structure
  • Detectors
  • Grain Boundaries
  • Heat Treatment
  • High Temperature
  • Iron
  • Iron Alloys
  • Magnetic Fields
  • Magnetic Materials
  • Magnetic Properties
  • Magnetization
  • Magnetometers
  • Materials
  • Scattering

Fields of Study

  • Physics

Readers

  • Powder metallurgy of Titanium alloys.
  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.

Technology Areas

  • Microelectronics