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arXiv · 2101.01758

Development of Multi-Filament Textured-Powder Bi-2212/Ag wire with enhanced LAR

Peter M McIntyre·Timothy Elliott·Gareth D May·John S Rogers·Akhdiyor Sattarov
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Abstract

The performance and cost of Bi-2212/Ag wire is limited by the large fraction of silver matrix (~3:1) that is required in the oxide-powder-in-tube fabrication process. An alternative fabrication process is being developed in which fine-powder Bi-2212 is uni-axially compressed to form bars with a thin Ag foil sheath. The fine powder naturally textures (aligns the a-b planes perpendicular to the direction of compaction) with texture >80% using 200 MPa compression. A billet is formed by stacking trapezoidal-cross-section bars in a symmetric 8-12-16 pattern around a Ag rod and enclosing in a Ag-wall extrusion can. The billet is extruded and drawn to fine wire. Results are presented on present status of the development and testing.

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Peter M McIntyre, Timothy Elliott, Gareth D May, John S Rogers, Akhdiyor Sattarov. 2021-01-05. Development of Multi-Filament Textured-Powder Bi-2212/Ag wire with enhanced LAR. https://arxiv.org/abs/2101.01758

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