Composite reactive multilayer foil
US6863992B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 21, 2004 |
| Grant date | Mar 8, 2005 |
| Priority date | — |
| Expiry date | Jan 21, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31678
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Reactive foils and their uses are provided as localized heat sources useful, for example, in ignition, joining and propulsion. An improved reactive foil is preferably a freestanding multilayered foil structure made up of alternating layers selected from materials that will react with one another in an exothermic and self-propagating reaction. Upon reacting, this foil supplies highly localized heat energy that may be applied, for example, to joining layers, or directly to bulk materials that are to be joined. This foil heat-source allows rapid bonding to occur at room temperature in virtually any environment (e.g., air, vacuum, water, etc.). If a joining material is used, the foil reaction will supply enough heat to melt the joining materials, which upon cooling will form a strong bond, joining two or more bulk materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.