Method for manufacturing a thin and flexible ribbon of...

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26/112.1, 317/26

H01B 1/02 (2006.01) B22D 11/00 (2006.01) H01L 39/24 (2006.01)

Patent

CA 1105551

Abstract of the Disclosure A method for manufacturing a thin and flexible ribbon of superconductor material such as V3Sn, V3Ge, V3Si, Nb3Sn, Nb3Ge, Nb3Si and La-Au having a fine and compact microscopic structure comprises heating raw super- conductor material at a temperature within the range between its melting point and 300°C above the melting point to form a melt having suitable wettability and viscosity; ejecting the melt through a nozzle under a pressure within the range from 0.01 to 1.5 atm. against a cooling surface of a moving substrate such as a rotating drum; and cooling instantaneously and very rapidly a jet flow of the melt on the cooling surface at a cooling rate of 1,000°C to 1,000,000°C/sec. In order to manufacture the thin elongated ribbon of excellent configuration it is preferable to effect the cooling in a reduced atmosphere. The invention also provides the thin and flexible ribbon processed by the above mentioned process. When an intermetallic compound such as Nb-Si, Nb-Sn, Nb-Ge, V-Si, V-Sn and V-Ge is used as the raw superconductor material a thin and flexible ribbon of superconductor material having essentially a crystalline structure is formed. When La1-x(AuyCu1-y)x, wherein x>0.9, O?y?1 is used as the raw superconductor material it is possible to obtain a thin and flexible ribbon of super- conductor material having essentially an amorphous structure.

316702

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