General Electric Company

Fred E Luborsky

Israel S Jacobs

Richard O McCary

Joseph J Becker

Peter G Frischmann

Russell E Tompkins

John L Walter

William J Fahy

Amorphous magnetic metal alloys are processed by annealing at temperatures sufficient to achieve stress relief and cooling in directed magnetic fields or in zero magnetic fields. The ac and dc properties of magnetic cores produced in accordance with the processes of the invention may be tailored to match those of a wide range of magnetic alloys. Alloys processed in accordance with the invention provide improved performance in inductors, transformers, magnetometers, and electrodeless lamps.

Treatment of amorphous magnetic alloys to produce a wide range of

Plated memory wire is provided with a nickel-phosphorous alloy protective coating through an electro-deposition process. The protective coating is electrically conductive, nonmagnetic and has a bright surface amenable to good solder bonding. The memory function is provided by a Saccharin-type nickel-iron-cobalt film and the protective overcoating is applied by submerging the wire in an electrolyte bath composed of 360 g/l of nickel sulfate (NiSO.sub.4.6H.sub.2 O), 80 g/l of sodium sulfate (Na.sub.2 SO.sub.4), 60 g/l of sodium hypophosphite (NaH.sub.2 PO.sub.2.H.sub.2 O) and 25 g/l of boric acid (H.sub.3 BO.sub.3). The static bath is maintained at room temperature and the wire is moved through it at approximately eighteen inches per minute. An electro-deposition current density of from 20 to 80 ma./cm..sup.2 of plating area is employed.

Electro-deposition of a nonmagnetic conductive coating for memory wire

Amorphous metal alloys having good magnetic and physical properties including elevated temperature stability, ductility and saturation flux density contain iron, boron and silicon in proportions of 80-84, 12-15 and 1-8 atom percent respectively.

Amorphous metal alloys and ribbons thereof

A hard magnetic article made by casting a magnetically soft amorphous metal ribbon and shaping it to the form and size of the desired permanent magnet article, and then heat treating the resulting soft magnetic body and thereby converting the metal of the ribbon to the hard magnetic state.

Method of making permanent magnets and product

A magnetic alloy is cast as an amorphous metal ribbon and wound on a rotor shaft of a hysteresis motor and then heated to crystallize the metal ribbon and greatly increase its coercive force prior to assembling the rotor with the stator of the motor.

Method of making hysteresis motor rotor using amorphous magnetic alloy

An improved magnetic core of an amorphous metal alloy is provided for electrodeless fluorescent lamps.

Stress-relieved amorphous metal toroid-shaped magnetic core

Iron-boron-silicon ternary amorphous alloys having high saturation magnetization, high crystallization temperature and low coercivity are provided.

Growing community of inventors

Schenectady, NY, United States of America

Fred E Luborsky