Low temperature kinetic study of the formation of the superconducting A15 phase in the Nb--Al--Ge system
A kinetic study has been made of the reactions occurring in the Nb-Al-Ge system at temperatures below 1000/sup 0/C. This study has resulted in a two step heat treatment prior to the A15 formation reaction to be used to control the A15 formed. It was found that a Ge rich phase can be used to control the diffusion rate of the Al into the Nb. The interface between this barrier phase and the Nb matrix serves as the reaction site for the formation of the A15.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); California Univ., Berkeley (USA). Dept. of Mechanical Engineering
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 7034295
- Report Number(s):
- LBL-7629; TRN: 78-014585
- Resource Relation:
- Other Information: Thesis
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALUMINIUM ALLOYS
CRYSTAL-PHASE TRANSFORMATIONS
HEAT TREATMENTS
GERMANIUM ALLOYS
NIOBIUM ALLOYS
DIFFUSION
HIGH TEMPERATURE
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TRANSITION TEMPERATURE
ALLOYS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
THERMODYNAMIC PROPERTIES
360102* - Metals & Alloys- Structure & Phase Studies
656102 - Solid State Physics- Superconductivity- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALUMINIUM ALLOYS
CRYSTAL-PHASE TRANSFORMATIONS
HEAT TREATMENTS
GERMANIUM ALLOYS
NIOBIUM ALLOYS
DIFFUSION
HIGH TEMPERATURE
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TRANSITION TEMPERATURE
ALLOYS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
THERMODYNAMIC PROPERTIES
360102* - Metals & Alloys- Structure & Phase Studies
656102 - Solid State Physics- Superconductivity- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena- (-1987)