VACUUM FURNACE BRAZING OF BERYLLIUM
Vacuum brazing techniques were developed for joining beryllium to titanium, stainless steel and to itself using silver as the filler. Shear strengths of about 20,000 psi were obtained for all three types of brazes. When brazing beryllium to titanium or to stainless steel, excessive brazing temperatures or holding times result in low-strength brazes. Both brazes can be made at temperatures as low as 900 deg C which is 60 deg below the melting point of pure silver. Initially, difficulty was experienced in obtaining consistently good brazes when joining beryllium to itself due to poor wetting by the silver. This was overcome by adding a small amount of titanium hydride to the beryllium contact surface. High strength brazes were consistently produced at temperatures from 960 to 1070 deg C showing that overheating was not a problem. (auth)
- Research Organization:
- California. Univ., Livermore. Lawrence Radiation Lab.
- DOE Contract Number:
- W-7405-ENG-48
- NSA Number:
- NSA-16-029357
- OSTI ID:
- 4792113
- Report Number(s):
- UCRL-6391
- Country of Publication:
- United States
- Language:
- English
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