Nanoengineered explosives

• US 5,505,799 A
• Filed: 09/19/1993
• Issued: 04/09/1996
• Est. Priority Date: 09/19/1993
• Status: Expired due to Term

• Current Assignee: Lawrence Livermore National Security LLC (Government of the United States of America)
• Original Assignee: Regents of the University of California (University of California)
• Inventors: Makowiecki, Daniel M.
• Primary Examiner(s): Nelson, Peter A.
• Application Number:
  US08/120,407
• Time in Patent Office: 933 Days
• Field of Search: 149/15, 149/37
• US Class Current: 149/15
• CPC Class Codes: C06B 33/00 Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide
• CPC Class Codes: C06B 45/14 a layer or zone containing an inorganic explosive or an inorganic explosive or an inorganic thermic component

Abstract

A complex modulated structure of reactive elements that have the capability of considerably more heat than organic explosives while generating a working fluid or gas. The explosive and method of fabricating same involves a plurality of very thin, stacked, multilayer structures, each composed of reactive components, such as aluminum, separated from a less reactive element, such as copper oxide, by a separator material, such as carbon. The separator material not only separates the reactive materials, but it reacts therewith when detonated to generate higher temperatures. The various layers of material, thickness of 10 to 10,000 angstroms, can be deposited by magnetron sputter deposition. The explosive detonates and combusts a high velocity generating a gas, such as CO, and high temperatures.

Claims

1. A multilayer explosive consisting of layers of an organic material, reactive material, and an inorganic oxide, with a layer of the organic material between layers of the reactive material and inorganic oxide;

said organic material normally functioning to prevent reaction between said reactive material and said inorganic oxide; and

wherein upon ignition said organic material enters into a reaction with said reactive material and said inorganic oxide.

2. The explosive of claim 1, wherein the organic material is carbon.

3. The explosive of claim 1, wherein the reactive material is a metal selected from the group of titanium, beryllium, aluminum, lithium, calcium, zirconium and yttrium.

4. The explosive of claim 1, wherein the inorganic oxide is selected from the group consisting of copper oxide, gallium oxide, zinc oxide, molybdenum oxide, nickle oxide, cobalt oxide, tin oxide and germanium oxide.

5. The explosive of claim 1, wherein the organic material is carbon, the reactive material is a light metal selected from aluminum, beryllium, and titanium;

and the inorganic oxide is a copper oxide.

6. The explosive of claim 1, wherein the layers of the organic material, the reactive material, and the inorganic oxide, each have a thickness in the range of 10 to 10,000 angstroms.

7. The explosive of claim 1, comprising a plurality of each of the layers of the organic material, the reactive material, and the inorganic oxide.

8. The explosive of claim 1, wherein the organic material is carbon, the reactive material is titanium, and the inorganic oxide is copper oxide.

9. The explosive of claim 8, comprising a plurality of each of said layers deposited one on top of the other.

10. A nanoengineered multilayer explosive, consisting of plurality layers of each of an organic material, an inorganic light metal, and an inorganic oxide, with a layer of the organic material located intermediate each of the adjacent layers inorganic light metal and inorganic oxide to prevent premature reaction therebetween.

11. The multilayer explosive of claim 10, wherein combinations of said layers are selected from the material combinations of Al--C--CuO, Be--C--CuO, and Ti--C--CuO.

12. The multilayer explosive of claim 11, wherein each of said layers has a thickness in the range of 10 to 10,000 angstroms.

13. The multilayer explosive of claim 12, wherein the material combination is Ti--C--CuO, and wherein there is one more layer of Ti than CuO.

14. The multilayer explosive of claim 10, wherein the layers of organic material is composed of carbon.

15. The multilayer explosive of claim 14, wherein the layers of inorganic oxide are composed of copper oxide.

16. The multilayer explosive of claim 10, wherein the layers of inorganic light metal are selected from the group of aluminum, beryllium, titanium, lithium, calcium, zirconium and yttrium.

17. The multilayer explosive of claim 10, wherein the inorganic oxide is selected from the group consisting of copper oxide, gallium oxide, zinc oxide, nickle oxide, cobalt oxide, molybdenum oxide, tin oxide and germanium oxide.

18. A method for fabricating a nanoengineered, multilayer explosive structure, including the steps of:

depositing a layer of an inorganic element to a thickness in the range of 10 to 10,000 angstroms;

depositing a layer of carbon on the thus deposited inorganic element layer to a thickness in the range of 10 to 10,000 angstroms;

depositing a layer of an inorganic oxide on the thus deposited layer of carbon to a thickness in the range of 10 to 10,000 angstroms;

depositing a layer of carbon on the thus deposited layer of inorganic oxide to a thickness in the range of 10 to 10,000 angstroms; and

depositing a layer of an inorganic element on the thus deposited layer of carbon to a thickness in the range of 10 to 10,000 angstroms.

19. The method of claim 18, additionally including the steps of depositing additional layers of carbon, the inorganic oxide, and the inorganic element in the same sequence and thickness, so as to produce a desired overall number of each of the layers.

20. The method of claim 18, wherein the steps of depositing are carried out by magnetron sputter deposition.

21. The method of claim 20, wherein the steps of depositing are carried out utilizing multiple individual magnetron sources.

22. The method of claim 21, wherein the multilayer explosive structure is formed on a substrate that is rotated adjacent to each of the individual magnetron sources.

23. The method of claim 22, additionally including cooling the substrate.

24. The method of claim 22, wherein the steps of depositing are carried out by continuously rotating the substrate from one source to another source.

25. The method of claim 22, wherein the steps of depositing are carried out by rotating the substrate back and forth between a source containing the organic material and sources containing the reactive material and the inorganic oxide.

26. The method of claim 18, additionally including depositing the layer of an inorganic element from material selected from the group consisting of aluminum, beryllium, titanium, lithium, calcium, zirconium, and yttrium.

27. The method of claim 18, additionally including depositing to layer of an inorganic oxide from material selected from the group consisting of copper oxide, gallium oxide, zinc oxide, nickel oxide, cobalt oxide, molybdenum oxide, tin oxide, and germanium oxide.

28. The method of claim 18, additionally including depositing one more layer of the inorganic element than the inorganic oxide.