Synthesis of YBa₂Cu₃O₇₋ₓ Fibers From an Organic Acid Solution

Abstract

A process has been developed for the synthesis of YBa2Cu3O7-x superconducting fibers from an organic acid precursor solution. Through rheology measurements on a series of precursor solutions, the molecular structure was determined and subsequently controlled to allow for fiber drawing. For solutions with a viscosity ⩾ 10 poise, fibers of 1 to 2 m length and 50 ~ 100 μm diameter can be hand drawn at ≈80°C. Processing methods were developed to circumvent deformation of the thermoplastic fibers during heating and to minimize BaCO3 formation during decomposition. Fibers sintered at 850°C for 1 h in 10−2 atm O2, followed by annealing at 500°C for 4 h in O2, were fully dense, consisted of submicron grains, and were superconducting.

Department(s)

Materials Science and Engineering

Keywords and Phrases

Chemical Reactions - Decomposition; Copper Oxides - Fibers; Oxides - Fibers; Rheology - Measurements; Yttrium Compounds - Fibers; Organic Acid Precursor Solution; Oxide Superconductors; Precursor Decomposition; Superconducting Fibers; Viscous Organic Precursor; Yttrium Barium Copper Oxide Fibers; Superconducting Materials

International Standard Serial Number (ISSN)

0884-2914

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1990 Cambridge University Press, All rights reserved.

Publication Date

01 Sep 1990

Link to Full Text

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