Techniques for lithium removal from 1040$sup 0$C aged tantalum alloy T-111
Technical Report
·
OSTI ID:4388428
Liquid-ammonia and vacuum-distillation techniques were found to be satisfactory for removing lithium from 1040 deg C aged T-111 (tantalum-8% tungsten-2% hafnium). Results of ductility tests and chemical analysis show that these two methods are adequate for removing lithium without embrittlement or contamination of the T--111. Moist air exposure of T-111 with traces of lithium on the surface produced mixed results. Some specimens were ductile; others were brittle. Brittle T-111 had an increased hydrogen content. Water removal of lithium from T-111 caused brittleness and an increased hydrogen concentration. (auth)
- Research Organization:
- National Aeronautics and Space Administration, Cleveland, Ohio (USA). Lewis Research Center
- NSA Number:
- NSA-29-005453
- OSTI ID:
- 4388428
- Report Number(s):
- N--73-20590; NASA-TM-X--2775
- Country of Publication:
- United States
- Language:
- English
Similar Records
Effects of alloy composition in alleviating embrittlement problems associated with the tantalum alloy T-111
Addition of oxygen to and distribution of oxides in tantalum alloy T-111 at low concentrations
Dissolution kinetics of small amounts of oxygen in tantalum alloy T-111 and internal oxide displacement reactions during annealing
Technical Report
·
Tue Dec 31 23:00:00 EST 1974
·
OSTI ID:4171983
Addition of oxygen to and distribution of oxides in tantalum alloy T-111 at low concentrations
Technical Report
·
Wed Oct 01 00:00:00 EDT 1975
·
OSTI ID:7345549
Dissolution kinetics of small amounts of oxygen in tantalum alloy T-111 and internal oxide displacement reactions during annealing
Journal Article
·
Fri Oct 01 00:00:00 EDT 1976
· Oxid. Met.; (United States)
·
OSTI ID:7218845