Thin film bridge initiators and method of manufacture

Details Thin film bridge initiators and method of manufacture Thin film bridge initiators and method of manufacture

F - Mech Eng,Light,Heat,Weapons

42

B

F42B 3/12 (2006.01) B60R 21/26 (2006.01)

Patent

CA 2233636

A thin film bridge initiator for initiation of explosives includes a thin film resistive element (1) of a selected composition of Nichrome, alternately Tantalum Nitride, either of which is evaporated upon (in the case of Nichrome) or sputtered upon (in the case of Tantalum Nitride) an alumina substrate (2). A prime explosive mix (12) is contained against the initiator film elements by a positive retention contractor assembly (11).

L'invention concerne un initiateur à cloison en couche mince destiné à l'amorçage d'explosifs comprenant un élément (1) résistif en couche mince d'une composition sélectionnée de nichrome, éventuellement de nitrure de tantale, l'un ou l'autre étant évaporé (dans le cas du nichrome) ou pulvérisé (dans le cas du nitrure de tantale) sur un substrat (2) d'alumine. Un mélange (12) d'explosif primaire est contenu contre les éléments en couche mince de l'initiateur par un ensemble (11) contacteur à rétention positive.

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