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Fracture toughness of YBa<sub>2</sub>Cu<sub>3</sub>O<sub>x</sub>containing Y<sub>2</sub>BaCuO<sub>5</sub>and ZrO<sub>2</sub>
19
Citations
18
References
1991
Year
Materials ScienceMaterials EngineeringHigh-tc SuperconductivityEngineeringFracture ToughnessCeramic MaterialApplied PhysicsSuperconductivityHigh Tc SuperconductorsSignificant TougheningSolid MechanicsMicrostructure-strength RelationshipTetragonal Zro2 ParticlesStructural CeramicCrack FormationZro2 ParticlesMechanics Of MaterialsFracture Mechanics
Tetragonal ZrO2 particles have been added to superconducting YBa2Cu3Ox(123) to improve its fracture toughness (KlC). Reactions between the ZrO2 and 123 prevented the ZrO2 from providing significant toughening. A sol-gel coating of Y2BaCuO5(211) on the ZrO2 particles minimized the deleterious reactions. Addition of 20 mol.% ZrO2 coated with 211 yielded a 123 composite with a KlC of 4.5 MPa m0.5.
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