DUCTILE SUPERCONDUCTING ALLOYS

摘要

1445723 Super-conducting alloys UNITED STATES ENERGY RESEARCH & DEVELOPMENT ADMINISTRATION 31 Oct 1973 [14 Nov 1972] 50679/73 Heading C7A [Also in Division H1] Super-conductive alloys have the following compositions (atomic percentage):- Nb 3 Al I or 6.33 Cu 96 or 90.67 Nb 3.75 Al 1.25 Cu 95 Nb 5 Al 1.67 Cu 93.33 Nb 7 Al 2À33 Cu 90À67 Nb 5 Sn 2 or 3 Cu 93 or 92 Nb 75 Al 18.75 Ge 6.25 Nb 79 Sn 1 Ti 20 V3.75 Si 1.25 Cu 95 V3 Si Nb3 Sn Nb3 Al 0.75 Ge 0.25 V3 G9 Nb3 G9 The alloys may be formed by melting the constituents together under an inert gas e.g. He or Ar and cooling to give a matrix of normal metal e.g. Cu, with super-conductive particles e.g. Nb, dispersed within the matrix and along the grain boundaries of the matrix.