Development of multi-filament textured-powder Bi-2212/Ag wire with enhanced local area ratio. Issue 1 (1st May 2022)

• Record Type: Journal Article
• Authors: May, G D; Coats, C; Elliott, T; McIntyre, P M; Ratcliff, C T; Rogers, J S; Besser, M
• Is Part Of: IOP conference series. Volume 1241:Issue 1(2022)
• Publication Date: 2022-05-01
• Subjects: Materials science -- Periodicals; 620.1105
• DOI: 10.1088/1757-899X/1241/1/012020
• Languages: English
• ISSNs: 1757-8981

Abstract

Abstract: The performance and cost of Bi-2212/Ag wire is limited by the large area fraction of Ag matrix (∼3:1) that is required in the conventional oxide-powder-in-tube fabrication process. An alternative process is being developed in which fine-powder Bi-2212 is uniaxially compressed to form a bar tetrahedral bar with a Ag-alloy foil cladding. The fine powder naturally textures under compression (aligns the a-b planes perpendicular to the direction of compaction). Earlier work demonstrated that a symmetric billet of trapezoidal-cross-section textured-powder (TP) bars draws conformally so that the local area ratio is preserved.