Mechanical properties of fiber-reinforced YBa{sub 2}Cu{sub 3}O{sub x} and Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub x} bars

Conference · Thu Jul 01 04:00:00 EDT 1993

OSTI ID:10174990

Goretta, K C; Martin, L J; Singh, D; Poeppel, R B; Chen, Nan; Chu, C Y; Routbort, J C ^[1]; Gleixner, R A ^[2]

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1. Argonne National Lab., IL (United States)
2. Babcock and Wilcox Co., Alliance, OH (United States)

Strength in four-point bending and fracture toughness of YBa{sub 2}Cu{sub 3}O{sub x} (123) and Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub x} (2212) were examined at room temperature. The 123 was reinforced with 15 vol.% Y{sub 2}BaCuO{sub 5} (211) fibers and was processed to 90--91% density by cold pressing and sintering. The 2212 was reinforced with 15 vol.% 2212 fibers and was processed to {approx}90% density by sinter forging. The 123/211 composites had a fracture toughness of 1.9 MPa(m){sup 0.5}, which is 20--30% higher than that of corresponding monoliths, but exhibited no improvement in strength. The strength and fracture toughness of the 2212/2212 composites were 102 MPa and 2.7 MPa(m){sup 0.5}, respectively, which were slight improvements over the monoliths. Transport critical current densities at 77 K were only slightly affected by the fiber additions.

• Research Organization: Argonne National Lab., IL (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 10174990
• Report Number(s): ANL/ET/CP--78558; CONF-930703--10; ON: DE93017689
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603
BARIUM OXIDES
BENDING
BISMUTH OXIDES
CALCIUM OXIDES
COPPER OXIDES
FIBERS
FRACTURE PROPERTIES
HIGH-TC SUPERCONDUCTORS
MECHANICAL PROPERTIES
MICROSTRUCTURE
REINFORCED MATERIALS
SCANNING ELECTRON MICROSCOPY
STRONTIUM OXIDES
SUPERCONDUCTING COMPOSITES
YTTRIUM OXIDES