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- Title
Reactive air brazing joins electrochemical components.
- Abstract
This article reports that a reactive air-brazing (RAB) technique has been developed for joining electrochemical components in fuel cells by researchers at the Richland, Washington-based Pacific Northwest National Laboratory. The reason for developing the technology was to find a way to join the components in fuel cells and similar devices, which operate at relatively high temperatures and are subjected to many thermal cycles. The objective in RAB is to reactively modify one or both oxide facing surfaces with a compound that has been at least partially dissolved in a noble metal solvent such as silver, gold, or platinum. The newly formed surface is readily wetted by the remaining molten filler material. In many respects, this concept is similar to active metal brazing, except that the joining operation can be conducted in air, and the final joint should be resistant to oxidation at high temperatures.
- Subjects
RICHLAND (Wash.); WASHINGTON (State); BRAZING; FILLER materials; FUEL cells; SEALING (Technology); ELECTROCHEMISTRY
- Publication
Advanced Materials & Processes, 2004, Vol 162, Issue 12, p18
- ISSN
0882-7958
- Publication type
Article