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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:
;
Publication Date:
OSTI Identifier:
6050251
Patent Number(s):
US 5202306; A
Application Number:
PPN: US 7-761551
Assignee:
Dept. of Energy, Washington, DC (United States) IMS; EDB-93-121076
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Patent
Resource Relation:
Patent File Date: 18 Sep 1991
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; BARIUM OXIDES; FRACTURE PROPERTIES; COPPER OXIDES; HIGH-TC SUPERCONDUCTORS; YTTRIUM OXIDES; ZIRCONIUM OXIDES; METALLURGICAL EFFECTS; ADDITIVES; COATINGS; DISPERSIONS; ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; MECHANICAL PROPERTIES; OXIDES; OXYGEN COMPOUNDS; SUPERCONDUCTORS; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS; ZIRCONIUM COMPOUNDS; 360203* - Ceramics, Cermets, & Refractories- Mechanical Properties

Citation Formats

Goretta, K.C., and Kullberg, M.L. Fracture toughness for copper oxide superconductors. United States: N. p., 1993. Web.
Goretta, K.C., & Kullberg, M.L. Fracture toughness for copper oxide superconductors. United States.
Goretta, K.C., and Kullberg, M.L. Tue . "Fracture toughness for copper oxide superconductors". United States.
@article{osti_6050251,
title = {Fracture toughness for copper oxide superconductors},
author = {Goretta, K.C. and Kullberg, M.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 = {Tue Apr 13 00:00:00 EDT 1993},
month = {Tue Apr 13 00:00:00 EDT 1993}
}