Chemical vapor deposition of yttrium barium(2) copper(3) oxygen(x) thin films for wire applications. Final report, May 88-Dec 91

Technical Report · Sun Dec 01 04:00:00 EST 1991

OSTI ID:5577932

Lackey, W J; Hanigofsky, J A; Hill, D N; Carter, W B; Barefield, E K

The chemical vapor deposition of superconducting ytterbium barium copper oxide thin films onto continuous lengths of ceramic fiber tows has been investigated. This project couples two areas of current interest in the materials field: continuous fiber coating and the deposition of one of the unique high temperature superconducting oxides. The YBa2Cu3Ox material has zero resistance at temperatures above 77 K (the boiling point of nitrogen), and the film form has been shown to have high critical current densities. By coating ceramic fiber tows, a strong, flexible superconducting material in the form of wire can be developed and used for several applications, including coils for magnets and transmission lines. Over 900 deposition runs were completed using a horizontal CVD furnace and over 150 continuous fiber coating experiments were completed. The deposition was performed on fiber tows, flat samples, and flexible tapes; the continuous substrates were moved and held stationary in the furnace.

• Research Organization: Georgia Inst. of Tech., Atlanta, GA (United States)
• OSTI ID: 5577932
• Report Number(s): AD-A-247013/6/XAB; CNN: N00014-88-C-0615
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360207 -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
CHEMICAL COATING
CHEMICAL REACTIONS
CHEMICAL VAPOR DEPOSITION
COPPER COMPOUNDS
COPPER OXIDES
CRITICAL CURRENT
CURRENT DENSITY
CURRENTS
DEPOSITION
DIMENSIONS
ELECTRIC CONDUCTIVITY
ELECTRIC CURRENTS
ELECTRICAL PROPERTIES
ELEMENTS
FILMS
FURNACES
HIGH-TC SUPERCONDUCTORS
LENGTH
MAGNETS
NITROGEN
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SAMPLING
SUBSTRATES
SUPERCONDUCTING FILMS
SUPERCONDUCTING WIRES
SUPERCONDUCTIVITY
SUPERCONDUCTORS
SURFACE COATING
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
WIRES
YTTRIUM COMPOUNDS
YTTRIUM OXIDES