Patent ID: 6352649
Filing Date: 2002-03-05
Classification: C22C,G01L,H01F,H01L

Abstract:
A ceramic metallic composite comprisinga metal oxide of the ferrite type, a metallic binder, and a hard magnetic powder; wherein the metallic oxide of the ferrite type has the general formula MexFeyO4, where Me is Mn, Co, Ti, Zn and mixtures thereof, wherein x is about 0.04 to about 1.3 and y is about 1.7 to about 3; wherein the metallic binder is selected from the group consisting of transition metal, silver, alloys having the general formula Ag1âˆ’xNix, Ag1âˆ’xCox, where x is 0 to about 1.0, or Ag1âˆ’xâˆ’yNixCoy, where x+y is 0 to about 1.0, binders of the general formula plus other metallic additions which total less than about 50 weight percent, and mixtures thereof; the ceramic metallic composite having a density of at least about 70% of its maximum theoretical density and an amplitude of magnetostriction of at least about 10 to about 400 ppm, and wherein the ceramic metallic composite has a fracture strength of at least about 10 KSI.