Method of making machinable high energy permanent magnets

Claim 1

THE METHOD OF MAKING AN EDGE-CUTTABLE FINE PARTICLE PERMANENT MAGNET COMPRISING, FORMING SUBSTANTIALLY DOMAIN SIZE ANISOTROPIC PARTICLES OF A PERMANENT MAGNET SUBSTANCE INTO A COMPACTED BODY IN WHICH THE PARTICLES ARE IN MAGNETIC ALIGNMENT, FIRING THE BODY SO COMPACTED, WITHOUT DISTURBING SAID ALIGNMENT OF THE PARTICLES AT CONDITIONS OF TIME AND TEMPERATURE LESS THAN BUT APPROACHING SINTERING CONDITIONS FOR THE BODY, SAID CONDITIONS OF TIME AND TEMPERATURE BEING SUCH THAT ANY ORGANIC BINDER PRESENT IN SAID BODY IS BURNED OFF AND FURTHER SUCH THAT THE BODY IS CONVERTED TO A FRIABLE, RELATIVELY POROUS BODY OF IMPROVED ENERGY PRODUCT RELATIVE TO ITS INITIAL VALUE AND HAVING A DENSITY WHICH EXCEEDS ITS INITIAL DENSITY BY UP TO ABOUT 15-20%, AND WHICH IS NOT TOO HARD TO BE EDGE CUT, COOLING THE FIRED BODY, AND IMPREGNATING THE FIRED BODY WITH A BINDER WITHOUT DISTURBING PARTICLE ALIGNMENT, THEREBY COHERING THE PARTICLES INTO A DURABLE COHERENT SHAPE.

Claim 2

THE METHOD OF MAKING AN EDGE-CUTTABLE FINE PARTICLE PERMANENT MAGNET COMPRISING, FORMING SUBSTANTIALLY DOMAIN SIZE ANISOTROPIC PARTICLES OF A PERMANENT MAGNET SUBSTANCE INTO A COMPACTED BODY IN WHICH THE PARTICLES ARE IN MAGNETIC ALIGNMENT, FIRING THE BODY SO COMPACTED, WITHOUT DISTURBING SAID ALIGNMENT OF THE PARTICLES AT CONDITIONS OF TIME AND TEMPERATURE LESS THAN BUT APPROACHING SINTERING CONDITIONS FOR THE BODY, SAID CONDITIONS OF TIME AND TEMPERATURE BEING SUCH THAT ANY ORGANIC BINDER PRESENT IN SAID BODY IS BURNED OFF AND FURTHER SUCH THAT THE BODY IS CONVERTED TO A FRIABLE, RELATIVELY POROUS BODY OF IMPROVED ENERGY PRODUCT RELATIVE TO ITS INITIAL VALUE AND HAVING A DENSITY WHICH EXCEEDS ITS INITIAL DENSITY BY UP TO ABOUT 15-20%, AND WHICH IS NOT TOO HARD TO BE EDGE CUT, COOLING THE FIRED BODY, AND IMPREGNATING THE FIRED BODY WITH A BINDER WITHOUT DISTURBING PARTICLE ALIGNMENT, THEREBY COHERING THE PARTICLES INTO A DURABLE COHERENT SHAPE.