Accession Number : AD0420234

Title :   SURFACE INVESTIGATIONS ON PERMANENT MAGNETS,

Corporate Author : INDIANA GENERAL CORP VALPARAISO

Personal Author(s) : Kronenberg,K. J. ; Quear,R. E.

Report Date : MAY 1963

Pagination or Media Count : 22

Abstract : Magnets of iron, cobalt and iron-cobalt particles were made with different matrix materials. Magnets pressed from a gel of magnetic particles and mercury were used to evaluate the progress of the various phases of the process. These magnets are commonly referred to as ''mercury matrix'' magnets. In order to eliminate the mercury these magnets were distilled at high temperatures under a vacuum. This resulted in the production of porous blocks of fine particles which were either vacuum impregnated with resins or crushed, mixed with binder and repressed. Lead was added to the heat treated gel before pressing. These magnets were distilled, crushed and repressed. Magnets were made by superficially oxidizing submicron particles of iron-cobalt. Gross structure in fine particle magnets was revealed by electron micrographs. (Author)

Descriptors :   (*MAGNETS, SURFACE PROPERTIES), (*MAGNETIC MATERIALS, MAGNETS), (*FERROMAGNETIC MATERIALS, SURFACE PROPERTIES), GELS, IRON ALLOYS, COBALT ALLOYS, MERCURY, MANUFACTURING, PARTICLES, MANGANESE ALLOYS, ALUMINUM ALLOYS, BISMUTH ALLOYS, FERRITES, BINDERS, SURFACES, SIMULATION, ELECTRON MICROSCOPY

Distribution Statement : APPROVED FOR PUBLIC RELEASE