| 摘要 |
A superconducting wire is formed by passing a niobium, vanadium or zirconium-niobium wire through a hot bath of gold, gallium, tin or aluminium at a temperature between 650 and 1300 DEG C. A neutral atmosphere of e.g. argon or helium is used. The wire is first passed through baths of a mixture of (1) hydrofluoric acid and nitric acid, (2) hydrofluoric acid, (3) water, (4) acetone, and is then passed through a bath 24 of e.g. molten tin in a quartz vessel 25 having guides 38, 39. Quartz stoppers 28, 34 having holes for the passage of the wire and a gas are provided at the ends. <PICT:1048904/C6-C7/1>ALSO:<PICT:1048904/C1/1> A superconducting wire is formed by passing a niobium, vanadium or zirconium-niobium wire through a hot bath of gold, gallium, tin or aluminium at a temperature between 650 DEG and 1300 DEG C. A neutral atmosphere of e.g. argon or helium is used. The wire is first passed through baths of a mixture of (1) hydrofluoric acid and nitric acid, (2) hydrofluoric acid, (3) water, (4) acetone, and is then passed through a bath 24 of e.g. molten tin a quartz vessel 25 having guides 38, 39. Quartz stoppers 28, 34 having holes for the passage of the wire and a gas are provided at the ends.
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