Reaction induced texture of (Bi,Pb)[sub 2]Sr[sub 2]Ca[sub 2]Cu[sub 3]O[sub 10+[delta]] /Ag composite conductors

Journal Article · Mon Aug 22 04:00:00 EDT 1994 · Applied Physics Letters; (United States)

DOI:https://doi.org/10.1063/1.112145· OSTI ID:7151356

Merchant, N; Luo, J S; Maroni, V A ^[1]; Riley, Jr, G N; Carter, W L ^[2]

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1. Argonne National Laboratory, Argonne, Illinois 60439 (United States)
2. American Superconductor Corporation, Westborough, Massachusetts 01581 (United States)

A considerable body of evidence collected on silver-sheathed (Bi,Pb)[sub 2]Sr[sub 2]Ca[sub 2]Cu[sub 3]O[sub 10+[delta]] (Bi-2223/Ag) composite conductors heat treated without any additional rolling or pressing (beyond fabrication of the initial composite) has revealed that significant texturing of the Bi-2223 grains occurs as the Bi-2223 formation reaction takes place. During heat treatment, Bi-2223 is produced via a reaction between Bi-2212 and second phases in the core of the composite. As the Bi-2223 forms, it develops texture by what appears to be a grain growth mechanism. These concurrent processes ultimately result in a well-textured, single-phase conductor even when no additional rolling or pressing is done to the initial composite. This observation raises important questions about the relative contributions of the heat treatment and deformation steps to texture development during conventional oxide-powder-in-tube processing of Bi-2223/Ag composite conductors.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 7151356
• Journal Information: Applied Physics Letters; (United States), Journal Name: Applied Physics Letters; (United States) Vol. 65:8; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
665412 -- Superconducting Devices-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
ALLOYS
BISMUTH COMPOUNDS
BISMUTH OXIDES
CABLES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
CONDUCTOR DEVICES
COPPER COMPOUNDS
COPPER OXIDES
CRITICAL CURRENT
CURRENTS
ELECTRIC CABLES
ELECTRIC CURRENTS
ELECTRICAL EQUIPMENT
EQUIPMENT
FABRICATION
GRANULAR MATERIALS
HEAT TREATMENTS
HIGH-TC SUPERCONDUCTORS
LEAD ADDITIONS
LEAD ALLOYS
MATERIALS
MICROSTRUCTURE
OXIDES
OXYGEN COMPOUNDS
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTING CABLES
SUPERCONDUCTORS
TEXTURE
TRANSITION ELEMENT COMPOUNDS