The variability residual stresses of thick superconductor films during orthorhombic to tetragonal transformation

Conference · Wed Jan 01 00:00:00 EST 1992

OSTI ID:5633801

Wu, W; Danyluk, S ^[1]; Lanagan, M T; Poeppel, R B ^[2]

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1. Illinois Univ., Chicago, IL (United States). Dept. of Civil Engineering, Mechanics, and Metallurgy
2. Argonne National Lab., IL (United States)

YBa{sub 2}Cu{sub 3}O{sub x} thick films have been deposited by spray pyrolysis of a sol-gel on 10 cm diameter polycrystalline MgO wafers. The film thickness was built up in layers of approximately 1 {mu}m thick. The in-plane residual stresses were measured by an optical interferometry (shadow moire) method as a function of film structure. In-plane residual stress maps over the area of the wafer have been obtained. The average stress of the 5 {mu}m orthorhombic phase was 0.84 GPa. As the film transforms from the orthorhombic to the tetragonal structure, the tensile stresses decreased by 0.5 GPa.

• Research Organization: Argonne National Lab., IL (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5633801
• Report Number(s): ANL/CP-75687; CONF-9203110-2; ON: DE92010499
• Resource Relation: Conference: 8. international conference on advanced science and technology, Argonne, IL (United States), 28 Mar 1992
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM OXIDES
STRESSES
COPPER OXIDES
YTTRIUM OXIDES
ANNEALING
CRYSTAL STRUCTURE
DEPOSITION
FILMS
HIGH-TC SUPERCONDUCTORS
MAGNESIUM OXIDES
PYROLYSIS
SUBSTRATES
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTIONS
COPPER COMPOUNDS
DECOMPOSITION
HEAT TREATMENTS
MAGNESIUM COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
SUPERCONDUCTORS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
360203* - Ceramics
Cermets
& Refractories- Mechanical Properties
360201 - Ceramics
Cermets
& Refractories- Preparation & Fabrication