Method of manufacturing laminated structures

Abstract

Abstract A LAMINATED STRUCTURE, INCLUDING LAMINA OF METALLIC MAGNETICALLY PERMEABLE MATERIAL, CONSTRUCTED WITH EACH LAMINA SEPARATED FROM EACH NEXT ADJOINING LAMINA BY A THIN LAYER OF ELECTRICALLY NON-CONDUCTIVE MATERIAL, WITH THE EXCEPTION THAT EACH LAMINA IS JOINED AND INTERCONNECTED IN A RANDOM PATTERN THROUGH THE NON-CONDUCTIVE LAYER TO EACH ADJACENT LAMINA. THE INTERCONNECTIONS BETWEEN EACH PAIR OF LAMINAE COVER ABOUT 10%, OR LESS, OF EACH LAMINA''S SURFACE AREA. LAMINATED STRUCTURES OF THIS TYPE ARE PRODUCED BY PROVIDING A THIN, ELECTRICALLY NONCONDUCTIVE COATING UPON THE SURFACE OF METALLIC LAMINA, STACKING A PLURALITY OF COATED LAMINAE, INLCUDING MAGNETICALLY PERMEABLE LAMINA, IN REGISTERED CONTACTING RELATIONSHIP, AND THEN HEATING THE STACKED LAMINAE AT A TEMPERATURE AND FOR A TIME SUFFICIENT TO SIMULTANEOUSLY ANNEAL THE MAGNETICALLY PERMEABLE MATERIAL AND CAUSE EACH LAMINA TO BE DIFFSION BONDED THROUGH THE NON-CONDUCTIVE LAYER TO EACH ADJACENT LAMINA IN A RANDOM PATTERN COVERING ABOUT 10%, OR LESS, OF EACH LAMINA''S SURFACE AREA.

Inventors

• 👤 Geoffrey Bate
• 👤 George W Brock

Bibliographic Details