Feasibility of ceramic joining with high energy electron beams
- Sandia National Labs., Albuquerque, NM (United States)
- Titan Corp., Albuquerque, NM (United States)
Joining structural ceramics is possible using high melting point metals such as Mo and Pt that are heated with a high energy electron beam, with the potential for producing joints with high temperature capability. A 10 MeV electron beam can penetrate through 1 cm of ceramic, offering the possibility of buried interface joining. Because of transient heating and the lower heat capacity of the metal relative to the ceramic, a pulsed high power beam has the potential for melting the metal without decomposing or melting the adjacent ceramic. The authors have demonstrated the feasibility of the process with a series of 10 MeV, 1 kW electron beam experiments. Shear strengths up to 28 NTa have been measured for Si{sub 3}N{sub 4}-Mo-Si{sub 3}N{sub 4}. These modest strengths are due to beam non-uniformity and the limited area of bonding. The bonding mechanism appears to be a thin silicide reaction layer. Si{sub 3}N{sub 4}-Si{sub 3}N{sub 4} joints with no metal layer were also produced, apparently bonded an yttrium apatite grain boundary phase.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 10106995
- Report Number(s):
- SAND-94-2056C; CONF-950129-1; ON: DE95004519; TRN: 95:000820
- Resource Relation:
- Conference: 19. annual conference on advanced ceramics, materials and structures,Cocoa Beach, FL (United States),9-12 Jan 1995; Other Information: PBD: [1995]
- Country of Publication:
- United States
- Language:
- English
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