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Alliedsignal Inc.

Jeng S Lin

Nicholas J DeCristofaro

Santosh K Das

Richard L Bye, Jr

Richard Bye

Shinya Myojin

David W Millure

Gary B A Schuster

Dale R Walls

Joseph G Cox, Jr

A copper-nickel-silicon quench substrate rapidly solidifies molten alloy into microcrystalline or amorphous strip. The substrate is composed of a thermally conducting alloy. It has a two-phase microstructure with copper rich regions surrounded by a network of nickel silicide phases. The microstructure is substantially homogeneous. Casting of strip is accomplished with minimal surface degradation as a function of casting time. The quantity of material cast during each run is improved without the toxicity encountered with copper-beryllium substrates.

Copper-nickel-silicon two phase quench substrate

An amorphous metal strip having a sheet thickness ranging from about 50 to 75 .mu.m and a sheet width of at least 20 mm is produced by a casting process utilizing a single nozzle orifice and a high thermal conductivity, large diameter wheel as a casting substrate. The strip has a fracture strain of 0.01 or more, a lamination factor of 0.8 or more, and a core loss of less than 0.2 W/kg at 60 Hz and 1.4 T.

Thick amorphous metal strip having improved ductility and magnetic

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Morristown, NJ, United States of America

Jeng S Lin