Ignitable heterogeneous stratified structure for the propagation

Details Ignitable heterogeneous stratified structure for the propagation Ignitable heterogeneous stratified structure for the propagation

1994-07-15

1996-07-23

Ryan, Patrick J.

Stock material or miscellaneous articles

Composite

Including interfacial reaction product of adjacent layers

428930, 428661, 428615, 428616, 428686, 428215, 2281245, B32B 900

Patent

active

055387950

ABSTRACT:
A multilayer structure has a selectable, (i) propagating reaction front velocity V, (ii) reaction initiation temperature attained by application of external energy and (iii) amount of energy delivered by a reaction of alternating unreacted layers of the multilayer structure. Because V is selectable and controllable, a variety of different applications for the multilayer structures are possible, including but not limited to their use as ignitors, in joining applications, in fabrication of new materials, as smart materials and in medical applications and devices. The multilayer structure has a period D, and an energy release rate constant K. Two or more alternating unreacted layers are made of different materials and separated by reacted zones. The period D is equal to a sum of the widths of each single alternating reaction layer of a particular material, and also includes a sum of reacted zone widths, t.sub.i, in the period D. The multilayer structure has a selectable propagating reaction front velocity V, where

REFERENCES:
patent: 3625662 (1971-12-01), Robers
patent: 4162496 (1979-07-01), Downer
patent: 4482418 (1984-11-01), Rigby
patent: 5070036 (1991-12-01), Stevens
patent: 5160794 (1992-11-01), Wong
patent: 5256368 (1993-10-01), Oden
patent: 5381944 (1995-01-01), Makowiecki
Journal of Applied Phys, Nov. 15, 1989 vol. 66-No. 10, pp. 5039-5045 (Tamburini).

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