LASL Nb/sub 3/Ge conductor development. Progress report, January 1--March 31, 1977
- comp.
The sixth quarterly progress report of the Los Alamos Scientific Laboratory Program to develop Nb/sub 3/Ge as a superconductor with potential applications to superconducting power transmission lines covers the period January 1--March 31, 1977. Efforts have been concentrated this quarter toward the development of a ''long sample'' apparatus in which substrates can be drawn through the CVD coating chamber. Problems arising from the introduction of the required masking structures into the gas flow stream are described, and equipment modifications designed to solve them are discussed. A total of 10 tapes and 10 rods were coated with 5 to 15-..mu..m-thick coats of Nb/sub 3/Ge in the ''long sample'' apparatus this quarter. Studies of the material by x rays indicate that we are depositing high T/sub c/ (greater than or equal to 20.0 K) Nb/sub 3/Ge with small amounts (3 to 5 at. percent) of second-phase Nb/sub 5/Ge/sub 3/. Material inhomogeneity and cracking of the coats are problems yet to be solved.
- Research Organization:
- Los Alamos Scientific Lab., NM (USA)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 7257543
- Report Number(s):
- LA-6798-PR
- Country of Publication:
- United States
- Language:
- English
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24 POWER TRANSMISSION AND DISTRIBUTION
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71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AC LOSSES
ALLOYS
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CHEMICAL COATING
CHEMICAL VAPOR DEPOSITION
COATINGS
CONDUCTOR DEVICES
COPPER
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ELECTRICAL EQUIPMENT
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GERMANIUM ALLOYS
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NIOBIUM BASE ALLOYS
PERFORMANCE TESTING
POWER TRANSMISSION LINES
RESEARCH PROGRAMS
STEELS
SUPERCONDUCTING CABLES
SUPERCONDUCTORS
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TESTING
TRANSITION ELEMENTS
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420201 -- Engineering-- Cryogenic Equipment & Devices
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AC LOSSES
ALLOYS
CABLES
CHEMICAL COATING
CHEMICAL VAPOR DEPOSITION
COATINGS
CONDUCTOR DEVICES
COPPER
DEPOSITION
ELECTRIC CABLES
ELECTRICAL EQUIPMENT
ELEMENTS
EQUIPMENT
FABRICATION
GERMANIUM ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
METALS
NIOBIUM ALLOYS
NIOBIUM BASE ALLOYS
PERFORMANCE TESTING
POWER TRANSMISSION LINES
RESEARCH PROGRAMS
STEELS
SUPERCONDUCTING CABLES
SUPERCONDUCTORS
SURFACE COATING
TESTING
TRANSITION ELEMENTS
TUBES