Cobalt-Free Permanent Magnet Alloys.

Abstract

We have undertaken the study of cobalt-free alloys for evaluation of their use in permanent magnet fabrication. A two-phase study was carried out. In the first phase, the plasma arc process was employed for the production of fine powder of MnAlC and the second phase was confined mainly with melt spinning. Both of these rapid solidification technology approaches should permit stabilization of metastable phases and offer a unique technique of generating coercivity. The results of our investigation indicate that melt spinning of boron containing Nd-Fe and Pr-Fe alloys can provide high values of coercive force and saturation magnetization. The composition of the magnetic phase responsible for the high coercive force was identified to be R3Fe20B. (Author).

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1984
Accession Number
ADA149272

Entities

People

  • B. M. Ma
  • K. S. V. L. Narasimhan
  • T. Lizzi

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Coercivity
  • Crystal Structure
  • Curie Temperature
  • Fiber Spinning
  • Heat Energy
  • High Temperature
  • Iron Alloys
  • Magnetic Alloys
  • Magnetic Fields
  • Magnetic Materials
  • Magnetic Properties
  • Magnets
  • Materials
  • Permanent Magnets
  • Phase Transformations
  • Thermal Spraying
  • Transition Temperature

Fields of Study

  • Materials science

Readers

  • Aerodynamics.
  • Electrochemical Engineering/ Fuel Cell Technologies
  • Superconducting Magnet Technology