Wrapped tantalum diffusion barrier

Stock material or miscellaneous articles – All metal or with adjacent metals – Laterally noncoextensive components

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Details

29599, 174 15S, 174126S, 174128S, 428930, B21C 3712, H01L 3906

Patent

active

042051193

ABSTRACT:
A multifilamentary stabilized superconductor of the A-15 type is disclosed wherein the A-15 compound is formed on rods of niobium or vanadium by diffusion of tin or gallium, respectively, from a copper alloy matrix and wherein stabilization is provided by an external layer of copper. The stabilizing copper is protected from tin or gallium diffusion by a number of spirally wrapped layers of tantalum separated from one another by copper layers.

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patent: 3570118 (1971-03-01), Reynolds et al.
patent: 3579800 (1971-05-01), Packord
patent: 3728165 (1973-04-01), Howlett
patent: 3813764 (1974-06-01), Tonalia et al.
patent: 3905839 (1975-09-01), Hashimoto
patent: 3958327 (1976-05-01), Marancik et al.
patent: 3996661 (1976-12-01), Ziegler et al.

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