Experimental investigation of copper matrix longitudinal resistance in a composite Nb-Ti wire
Abstract
Copper-matrix longitudinal resistance was studied as a function of wire diameter on specimens of multifilamentary Nb-Ti wire with filaments coated by a Nb layer. Experimental results are compared with the Sondheimer calculations for a monofilament conductor as well as with the Gavalloni calculations for an ideal wire with hexagonally located filaments. It has been shown that the best fit with the experiment is provided by the Sondheimer approximation. Comparison of the results of this work with other authors' data obtained for the specimens with no niobium barrier, allows us to single out the influence of a pure size effect and diffusion of Ti on the resistivity.
- Publication:
-
IEEE Transactions on Magnetics
- Pub Date:
- July 1994
- DOI:
- 10.1109/20.305753
- Bibcode:
- 1994ITM....30.2372G
- Keywords:
-
- Copper;
- Electric Conductors;
- Electric Wire;
- Electrical Resistivity;
- Niobium Alloys;
- Superconductors (Materials);
- Titanium Alloys;
- Transmission Lines;
- Approximation;
- Diffusion;
- Electrical Measurement;
- Metal Coatings;
- Superconductivity;
- Electronics and Electrical Engineering