Abstract: A non-electrical intermetallic thermal sensor with trigger temperatures in a range of 360° F. to about 430° F., comprising, a hermetically sealed housing including at least one layer of electronegative metal disposed in the housing, wherein the electronegative metal comprises tin (Sn), and at least one layer of active lithium/magnesium alloy disposed in the housing, wherein each layer(s) of active lithium/magnesium alloy is disposed in abutting interface with each layer(s) of electronegative metal. The intermetallic thermal sensors of the present invention further include at least one diffusion barrier means for inhibiting the diffusion of the active lithium/magnesium alloy layer into the electronegative layer.

Abstract: An intermetallic thermal sensor comprised of a hermetically sealed housing containing alternating layers of electronegative and active metals or their alloys in intimate contact. The layers may be wafer or washer-shaped. If washer-shaped, the holes in the wafers are aligned with each other to create a well within the housing and any extension thereof. A tubular-shaped liner extends into the well and may contain an energetic composition such as BKNO.sub.3. In one embodiment a thermite charge in the sensor can be ignited for venting applications. The active metal and electronegative metal and their alloys are selected so that when the melting point of one or both metals, alloys, or metal and alloy pairs has reached its or their melting point in response to external heat within a design range of the sensor, a vigorous exothermic reaction occurs to initiate a gas-producing reaction in the well or to ignite the thermite for operation of a cook-off mitigation system.

Abstract: An electrically controllable pyrofuze pin device for ordnance device actiion which functionally replaces the mechanical barrier and arming wire or other rigid and removable means used to provide ordnance device activation. The device includes a pyrofuze pin, a connecting ignitor transfer charge, and ignitor, and electrical terminals to provide power from an external power supply, and a weatherproof housing. When electrically activated the pyrofuze pin is reduced to molten by-products which functionally eliminate the mechanical barrier and permits the activation of the ordnance device.

Abstract: An electrically controllable "Pyrofuze" pin device for ordnance device acation which functionally replaces the mechanical barrier and arming wire or other rigid and removable means used to provide ordnance device activation. The device includes a "Pyrofuze" pin, a connecting ignitor transfer charge, and ignitor, and electrical terminals to provide power from an external power supply, and a weatherproof housing. When electrically activated the "Pyrofuze" pin is reduced to molten by-products which functionally eliminate the mechanical barrier and permits the activation of the ordnance device.