BONDING OF CERMET-VALVE COMPONENTS TO METALS
Journal Article
·
· Welding J. (N.Y.)
OSTI ID:4334604
The techniques and procedures utilized to bond cermet-valve components successfully to metals for high-temperature fluid service are described. The cermets studied contained varying percentages of titanium carbide, tungsten carbide, tungsten-titanium complex carbide and niobium-tantalum-titanium complex carbide. The binder materials were primarily nickel and cobalt. The results of wetting tests on these cermets with different brazing alloys are presented, as are photomicrographs of many of the most promising cermet-to-metal joints. A procedure for attaching cermets is described wherein a nickel or tungsten-base alloy cushion is brazed between the cermet and Inconel to absorb stresses resulting from differential thermal expansion. A direct high-temperature bonding procedure is also discussed in which cermets of the titanium carbide-nickel type are joined to nickel without the use of a separately applied brazing alloy. (auth)
- Research Organization:
- Oak Ridge National Lab., Tenn.
- NSA Number:
- NSA-12-010659
- OSTI ID:
- 4334604
- Journal Information:
- Welding J. (N.Y.), Journal Name: Welding J. (N.Y.) Vol. Vol: 37
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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