Remotely operable shape memory alloy seals for plasma confinement systems
Description
The objective of this research program was to demonstrate the feasibility of exploiting vacuum seals fabricated from shape memory alloys as a means of making remotely operable seals. A Ni-Ti shape memory alloy was fabricated by hot isostatic pressing of powder alloy in the form of a rod which was then hot swagged to a 1/4'' diameter rod. This rod was then formed into a ring and electron beam welded and heat treated. The force generated on recovery of a ring which had been deformed into an elliptical cross was measured and the procedures for clamping in a flange system were studied. Successful vacuum sealing was demonstrated to a level of 10-9 Torr l/sec. Design for several closures which are fast action, non-bolt, and potentially capable of remote operation, are presented. 9 figs
Availability note (English)
MF available from INIS under the Report Number; Available from NTIS, PC A02/MF A01 as DE86005206.
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Additional details
Publishing Information
- Imprint Pagination
- 20 p.
- Report number
- DOE/ER/80195--T1
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 17043011
- Subject category
- S36: MATERIALS SCIENCE; S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
- Descriptors DEI
- ELASTICITY; FABRICATION; HIGH TEMPERATURE; NICKEL ALLOYS; REACTOR MATERIALS; SEALS; SHAPE; SPECIFICATIONS; TITANIUM ALLOYS; VACUUM SYSTEMS
- Descriptors DEC
- ALLOYS; MATERIALS; MECHANICAL PROPERTIES