Wrapped tantalum diffusion barrier

Details Wrapped tantalum diffusion barrier Wrapped tantalum diffusion barrier

1979-11-05

1981-08-25

Skiff, Peter K.

Metal treatment

Compositions

Heat treating

148127, 427 62, C21D 812, H01L 3900

Patent

active

042857406

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.

REFERENCES:
patent: 3559127 (1971-01-01), Schindler
patent: 3652967 (1972-03-01), Tanaka et al.
patent: 3813764 (1974-06-01), Tanaka et al.
patent: 3996661 (1976-12-01), Ziegler et al.
patent: 4028488 (1977-06-01), McDougall

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