Fracture toughness for copper oxide superconductors
Abstract
An oxide-based strengthening and toughening agent, such as tetragonal Zro.sub.2 particles, has been added to copper oxide superconductors, such as superconducting YBa.sub.2 Cu.sub.3 O.sub.x (123) to improve its fracture toughness (K.sub.IC). A sol-gel coating which is non-reactive with the superconductor, such as Y.sub.2 BaCuO.sub.5 (211) on the ZrO.sub.2 particles minimized the deleterious reactions between the superconductor and the toughening agent dispersed therethrough. Addition of 20 mole percent ZrO.sub.2 coated with 211 yielded a 123 composite with a K.sub.IC of 4.5 MPa(m).sup.0.5.
- Inventors:
-
- Downers Grove, IL
- Lisle, IL
- Issue Date:
- Research Org.:
- Argonne National Laboratory (ANL), Argonne, IL
- OSTI Identifier:
- 868742
- Patent Number(s):
- 5202306
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- DOE Contract Number:
- W-31109-ENG-38
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- fracture; toughness; copper; oxide; superconductors; oxide-based; strengthening; toughening; agent; tetragonal; zro; particles; added; superconducting; yba; cu; 123; improve; sol-gel; coating; non-reactive; superconductor; bacuo; 211; minimized; deleterious; reactions; dispersed; therethrough; addition; 20; mole; percent; coated; yielded; composite; mpa; oxide superconductors; sol-gel coating; copper oxide; fracture toughness; mole percent; oxide superconductor; superconducting yba; toughening agent; tetragonal zro; /505/252/501/
Citation Formats
Goretta, Kenneth C, and Kullberg, Marc L. Fracture toughness for copper oxide superconductors. United States: N. p., 1993.
Web.
Goretta, Kenneth C, & Kullberg, Marc L. Fracture toughness for copper oxide superconductors. United States.
Goretta, Kenneth C, and Kullberg, Marc L. Fri .
"Fracture toughness for copper oxide superconductors". United States. https://www.osti.gov/servlets/purl/868742.
@article{osti_868742,
title = {Fracture toughness for copper oxide superconductors},
author = {Goretta, Kenneth C and Kullberg, Marc L},
abstractNote = {An oxide-based strengthening and toughening agent, such as tetragonal Zro.sub.2 particles, has been added to copper oxide superconductors, such as superconducting YBa.sub.2 Cu.sub.3 O.sub.x (123) to improve its fracture toughness (K.sub.IC). A sol-gel coating which is non-reactive with the superconductor, such as Y.sub.2 BaCuO.sub.5 (211) on the ZrO.sub.2 particles minimized the deleterious reactions between the superconductor and the toughening agent dispersed therethrough. Addition of 20 mole percent ZrO.sub.2 coated with 211 yielded a 123 composite with a K.sub.IC of 4.5 MPa(m).sup.0.5.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1993},
month = {1}
}
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