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

Conference · Tue Dec 31 23:00:00 EST 1991

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: DOE; 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
• Country of Publication: United States
• Language: English

Related Subjects

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