Tungsten bridge for the low energy ignition of explosive and energetic materials
A tungsten bridge device for the low energy ignition of explosive and energetic materials is disclosed. The device is fabricated on a silicon-on-sapphire substrate which has an insulating bridge element defined therein using standard integrated circuit fabrication techniques. Then, a thin layer of tungsten is selectively deposited on the silicon bridge layer using chemical vapor deposition techniques. Finally, conductive lands are deposited on each end of the tungsten bridge layer to form the device. It has been found that this device exhibits substantially shorter ignition times than standard metal bridges and foil igniting devices. In addition, substantially less energy is required to cause ignition of the tungsten bridge device of the present invention than is required for common metal bridges and foil devices used for the same purpose. 2 figs.
- DOE Contract Number:
- AC04-76DP00789
- Assignee:
- Dept. of Energy, Washington, DC (United States)
- Patent Number(s):
- US 4976200; A
- Application Number:
- PPN: US 7-292201
- OSTI ID:
- 7266796
- Resource Relation:
- Patent File Date: 30 Dec 1988
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
EXPLOSIVES
IGNITION
IGNITION SYSTEMS
DESIGN
FABRICATION
TUNGSTEN
ELEMENTS
METALS
TRANSITION ELEMENTS
422000* - Engineering- Mining & Underground Engineering- (1980-)
450000 - Military Technology
Weaponry
& National Defense