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Title: 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:
 [1];  [2]
  1. (Downers Grove, IL)
  2. (Lisle, IL)
Publication Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL
OSTI Identifier:
868742
Patent Number(s):
US 5202306
Assignee:
United States of America as represented by United States (Washington, DC) ANL
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 = {Fri Jan 01 00:00:00 EST 1993},
month = {Fri Jan 01 00:00:00 EST 1993}
}

Patent:

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