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Title: Ignitable heterogeneous stratified structure for the propagation of an internal exothermic chemical reaction along an expanding wavefront and method of making same

A multilayer structure has a selectable, (1) propagating reaction front velocity V, (2) reaction initiation temperature attained by application of external energy, and (3) 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 igniters, 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 V=K(1/D{sup n}){times}[1-(t{sub i}/D)] and n is about 0.8 to 1.2. 8 figs.
Inventors:
;
Issue Date:
OSTI Identifier:
264557
Assignee:
Univ. of California, Oakland, CA (United States) PTO; SCA: 360000; PA: EDB-96:120527; SN: 96001625911
Patent Number(s):
US 5,538,795/A/
Application Number:
PAN: 8-275,472
Contract Number:
W-7405-ENG-48
Resource Relation:
Other Information: PBD: 23 Jul 1996
Research Org:
University of California
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; IGNITION SYSTEMS; DESIGN; MATERIALS WORKING; COMBUSTION WAVES; WAVE PROPAGATION; LAYERS; PROCESS CONTROL; USES

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