Method for manufacturing Nb.sub.3 Al group superconductor
AssigneeHitachi, Ltd.
InventorsNaofumi Tada, Fumio Iida, Ryukichi Takahashi, Takaaki Suzuki
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Abstract
In a method for manufacturing Nb.sub.3 Al phase by a diffusion reaction of Nb.sub.2 Al phase and Nb phase, a part of the Nb.sub.2 Al phase is remained and dispersed in the Nb.sub.3 Al phase homogeneously as for magnetic flux pinning centers for a high magnetic field. As for a method for dispersing the Nb.sub.2 Al phase homogeneously, a Nb.sub.3 Al group superconducting precursory composition obtained by dispersing Nb particles and Nb.sub.2 Al ultrafine particles by a mechanical alloying method is used, and further, by a conventional method for generating Nb.sub.3 Al phase by a diffusion reaction of Nb and an aluminum alloy, A Nb.sub.3 Al group superconductor can be achieved.
Claims4
A method for manufacturing Nb.sub.3 Al group superconductor comprising the steps of;
- dispersing and mixing Nb particles and Nb.sub.2 Al ultrafine particles by a mechanical alloying method thereby obtaining a Nb.sub.3 Al group superconducting precursory composition,
- deforming said Nb.sub.3 Al group superconducting precursory composition with a deforming ratio at least 1,000, and subsequently,
- performing a diffusion reaction at 1,000.degree.-1,800.degree. C.
A method for manufacturing Nb.sub.3 Al group superconductor comprising the steps of;
- dispersing and mixing Nb particles and Nb.sub.2 Al ultrafine particles by a mechanical alloying method thereby obtaining a Nb.sub.3 Al group superconducting precursory composition,
- fabricating said Nb.sub.3 Al group superconducting precursory composition to a hollowed cylinder,
- inserting an aluminum alloy into said hollowed cylinder,
- deforming said hollowed cylinder with said inserted aluminum alloy, and subsequently
- performing a diffusion reaction at 1000.degree.-1800.degree. C.
A method for manufacturing Nb.sub.3 Al group superconductor comprising the steps of;
- dispersing and mixing Nb particles and Nb.sub.2 Al ultrafine particles by a mechanical alloying method thereby obtaining a Nb.sub.3 Al group superconducting precursory composition,
- fabricating said Nb.sub.3 Al group superconducting precursory composition to a linear body,
- burying a plurality of said linear bodies into an aluminum alloy matrix,
- inserting said aluminum alloy matrix with said buried linear bodies into a metallic tube,
- deforming said metallic tube with said inserted matrix and linear bodies, and subsequently,
- performing a diffusion reaction at 1000.degree.-1800.degree. C.
A method for manufacturing Nb.sub.3 Al group superconductor comprising the steps of;
- dispersing and mixing Nb particles and Nb.sub.2 Al ultrafine particles by a mechanical alloying method thereby obtaining a Nb.sub.3 Al group superconducting precursory composition,
- fabricating said Nb.sub.3 Al group superconducting precursory composition to a foil,
- laminating said foil with an aluminum alloy foil to form a laminate,
- winding up said laminate to be a roll so that its cross section forms a spiral,
- inserting said roll into a metallic tube,
- deforming said metallic tube with said inserted roll, and subsequently,
- performing a diffusion reaction at 1000.degree.-1800.degree. C.
Dependencies are inferred from the claim text.