YBa sub 2 Cu sub 3 O sub x composites with improved toughness and strength

Conference · Sun Apr 01 00:00:00 EST 1990

OSTI ID:6617219

Singh, J P; Leu, H J; Kullberg, M L; Poeppel, R B; Goretta, K C

Composite YBa{sub 2}Cu{sub 3}O{sub x}/Ag superconductors were cast into thin tapes. Tapes containing 15 volume % Ag were 2 to 2.5 times stronger than monolithic YBa{sub 2}Cu{sub 3}O{sub x} tapes and had higher fracture toughnesses. The tapes containing Ag flakes were stronger than those containing Ag powder, possibly because of effects of preferred orientation. The superconducting properties of the tapes were not appreciably affected by Ag addition. Composite bars of YBa{sub 2}Cu{sub 3}O{sub x} and 10 mole % ZrO{sub 2} coated with Y{sub 2}BaCuO{sub 5} were found to have double the fracture toughness of unreinforced YBa{sub 2}Cu{sub 3}O{sub x}. Strength was unaffected by ZrO{sub 2} addition, however, because of differences in flaw populations. 16 refs., 4 figs., 1 tab.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: DOE/CE; DOE/ER
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6617219
• Report Number(s): CONF-901109-4; ON: DE90011180
• Resource Relation: Conference: International symposium on gas-liquid two-phase flows in conjunction with the winter annual meeting of the American Society of Mechanical Engineers, Dallas, TX (USA), 25-30 Nov 1990
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BARIUM OXIDES
FABRICATION
COPPER OXIDES
SILVER
STRENGTH FUNCTIONS
OPTIMIZATION
SUPERCONDUCTORS
PERFORMANCE TESTING
YTTRIUM OXIDES
ALIGNMENT
CERAMICS
COMPARATIVE EVALUATIONS
COMPOSITE MATERIALS
DEFECTS
DENSITY
DIMENSIONS
GRINDING
MEASURING METHODS
MECHANICAL PROPERTIES
MICROSTRUCTURE
MORTARS
POWDERS
SALTS
SOLUTIONS
TEMPERATURE EFFECTS
VERY HIGH TEMPERATURE
ZIRCONIUM OXIDES
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CHALCOGENIDES
COMMINUTION
COPPER COMPOUNDS
CRYSTAL STRUCTURE
DISPERSIONS
ELEMENTS
FUNCTIONS
MACHINING
MATERIALS
METALS
MIXTURES
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
TESTING
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
YTTRIUM COMPOUNDS
ZIRCONIUM COMPOUNDS
360203* - Ceramics
Cermets
& Refractories- Mechanical Properties
360201 - Ceramics
Cermets
& Refractories- Preparation & Fabrication
426001 - Engineering- Superconducting Devices & Circuits- (1990-)