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:
- Issue Date:
- OSTI Identifier:
- 6050251
- Patent Number(s):
- 5202306
- Application Number:
- PPN: US 7-761551
- Assignee:
- Dept. of Energy, Washington, DC (United States)
- 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 = {1993},
month = {4}
}
Search for the full text at the U.S. Patent and Trademark Office
Note: You will be redirected to the USPTO site, which may require a pop-up blocker to be deactivated to view the patent. If so, you will need to manually turn off your browser's pop-up blocker, typically found within the browser settings. (See DOE Patents FAQs for more information.)
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.