Development of the copper-tin diffusion-brazing process
- Matra Marconi Space, Stevenage (United Kingdom)
- JET Joint Undertaking, Abingdon (United Kingdom)
The copper-tin diffusion-brazing process has been studied with the objective of applying it to the joining of plasma-facing beryllium tiles to copper-based heat sinks in a nuclear-fusion reactor. The process is silver-free -- an essential requirement for this application -- and can be carried out at temperatures below 700 C (1,292 F). This approach produces thin joints of essentially pure copper of high thermal conductance with the requisite strength. Satisfactory conditions for achieving robust joints under the constraints demanded by the nuclear-fusion application have been established. The roles of the process parameters -- thickness of the filler metal tin, the compressive loading applied to the components during the brazing cycle and the brazing temperature -- have been assessed.
- OSTI ID:
- 655471
- Journal Information:
- Welding Journal, Vol. 77, Issue 10; Other Information: PBD: Oct 1998
- Country of Publication:
- United States
- Language:
- English
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