Pyrophoic material and method for making the same

Details Pyrophoic material and method for making the same Pyrophoic material and method for making the same

1994-12-08

1996-03-26

Walsh, Donald P.

Explosive and thermic compositions or charges

Structure or arrangement of component or product

Contiguous layers or zones

149 15, 102335, C06B 4514

Patent

active

055017517

ABSTRACT:
The present invention is directed to the encapsulation of pyrophoric materials in a high temperature resistant membrane having at least one perforation which allows air to contact the pyrophoric material. By controlling the accessibility of the pyrophoric material to the surrounding air, it is possible to reduce the kinetics of the oxidation reaction without affecting the thermodynamics of the reaction. This results in a product that demonstrates a lower peak temperature, longer dwell time at the lower temperature and, in most cases, an increase in the total heat energy output in comparison to an identical pyrophoric material that is not so encapsulated.

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Stephen C. Davis and Kenneth J. Klabunde, Unsupported Small Metal Particles: Preparation, Reactivity, and Characterization, Chemical Reviews, vol. 82, No. 2, Apr. 1982, pp. 153, 200-205.

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