TESTING OF THE PERMANENT MAGNET MATERIAL MN-AL-C FOR POTENTIAL USE IN PROPULSION MOTORS FOR ELECTRIC VEHICLES

The development of Mn-Al-C permanent magnets is reviewed. The general properties of the material are discussed and put into perspective relative to alnicos and ferrites. The traction motor designer's demands of a permanent magnet for potential use in electric vehicle drives are reviewed. Tests determined magnetic design data and mechanical strength properties. Easy axis hysteresis and demagnetization curves, recoil loops and other minor loop fields were measured over a temperature range from -50 to 150 C. Hysteresis loops were also measured for three orthogonal directions (the one easy and two hard axes of magnetization). Extruded rods of three different diameters were tested. The nonuniformity of properties over the cross section of the 31 mm diameter rod was studied. Mechanical compressive and bending strength at room temperature was determined on individual samples from the 31 mm rod.

• Corporate Authors:

  Dayton University

  300 College Park Avenue
  Dayton, OH  United States  45409

  National Aeronautics and Space Administration

  600 Independence Avenue, SW
  Washington, DC  United States  20546
• Authors:
  • Abdelnour, Z
  • Mildrun, H
  • Strant, K
• Publication Date: 1981-3

Media Info

• Pagination: 70 p.

Subject/Index Terms

• TRT Terms: Aluminum; Analysis; Carbon; Design; Electric vehicles; Ferrites; Flexural strength; Hysteresis; Magnetic properties; Magnets; Manganese; Mechanical properties; Motors; Permanent magnets; Propulsion; Tables (Data); Temperature; Vehicle power plants
• Uncontrolled Terms: Propulsion systems
• Old TRIS Terms: Magnet motors; Magnetization
• Subject Areas: Design; Energy; Highways; Vehicles and Equipment; I91: Vehicle Design and Safety;

Filing Info

• Accession Number: 00346529
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: NASA-CR-165291 Final Rpt., DOE/NASA/0189-81/1
• Contract Numbers: DEN3-189, DE-AI01-77CS-51044
• Files: TRIS
• Created Date: Jan 29 1982 12:00AM