Fracture toughness for copper oxide superconductors

Title: Fracture toughness for copper oxide superconductors

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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:

Goretta, Kenneth C ^[1]; Kullberg, Marc L ^[2]

Downers Grove, IL
Lisle, IL

Issue Date:: 1993-01-01

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

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C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA
C04B35/62847 - {with oxide ceramics}
C04B2235/6585 - at an oxygen percentage above that of air
C04B35/62805 - {Oxide ceramics}

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
Y10S505/782 - Bismuth-, e.g. BiCaSrCuO

C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA
C04B35/4521 - {containing bismuth oxide}
C04B35/803 - {The matrix of the ceramic products consisting of oxides only}
C04B2235/5292 - Flakes, platelets or plates
C04B2235/3217 - Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
C04B2235/3463 - Alumino-silicates other than clay, e.g. mullite
C04B2235/5224 - Alumina or aluminates

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
Y10S505/78 - Yttrium and barium-, e.g. YBa2Cu307

C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA
C04B2235/522 - Oxidic

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
Y10S505/785 - Composition containing superconducting material and diverse nonsuperconducting material

C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA
C04B2235/3225 - Yttrium oxide or oxide-forming salts thereof
C04B2235/449 - Organic acids, e.g. EDTA, citrate, acetate, oxalate
C04B2235/5445 - submicron sized, i.e. from 0,1 to 1 micron

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES
H01L39/2477 - {Processes including the use of precursors}

C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA
C04B35/4512 - {containing thallium oxide}
C04B2235/5228 - Silica and alumina, including aluminosilicates, e.g. mullite
C04B2235/3206 - Magnesium oxides or oxide-forming salts thereof
C04B2235/5276 - Whiskers, spindles, needles or pins
C04B2235/3215 - Barium oxides or oxide-forming salts thereof
C04B2235/5236 - Zirconia
C04B35/4508 - {Type 1-2-3}
C04B35/62655 - {Drying, e.g. freeze-drying, spray-drying, microwave or supercritical drying}
C04B2235/77 - Density
C04B2235/96 - Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance

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
Y10S505/783 - Thallium-, e.g. Tl2CaBaCu308

C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA
C04B2235/3246 - Stabilised zirconias, e.g. YSZ or cerium stabilised zirconia
C04B2235/5436 - micrometer sized, i.e. from 1 to 100 micron
C04B2235/656 - characterised by specific heating conditions during heat treatment

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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.

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                    Goretta, Kenneth C, & Kullberg, Marc L. Fracture toughness for copper oxide superconductors.  United States.

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                    Goretta, Kenneth C, and Kullberg, Marc L. Fri .  
        "Fracture toughness for copper oxide superconductors".  United States.  https://www.osti.gov/servlets/purl/868742.

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@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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Fracture toughness for copper oxide superconductors

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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].
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