Aug 12, 2025

US12385727 - Fuzzy interface layer for thermite and primer made from thermite with fuzzy layer

A layered thermite composite includes alternating layers of metal oxide and reducing metal deposited upon a substrate. A fuzzy interface layer between each metal oxide layer and reducing metal layer includes reducing metal, reducing metal oxide, and metal oxide at least partially intermixed therein. The fuzzy interface layer forms while moving between chambers in a multi-chamber deposition process which minimizes exposure of the reducing metal to oxygen while moving between chambers. The fuzzy interface layer is not expected to grow in thickness after deposition. The combination of the relative thinness of the fuzzy interface layer as well as the presence of reactants as well as reducing metal oxide maintains the sensitivity of the layered thermite structure to mechanical ignition if the structure is used within a primer.

Assignee: Spectre Primer Technologies, Inc.
Inventors: Daniel Yates
Filing date: 2024-04-29

The patent describes a layered thermite composite designed for use in primers, featuring a substrate with alternating layers of metal oxide and reducing metal, along with a fuzzy interface layer that enhances sensitivity to mechanical ignition. This interface layer is created during a multi-chamber deposition process, ensuring minimal exposure to oxygen and maintaining the reactive properties of the materials.

Claim 1

A layered thermite composite, comprising: a substrate having a deposition surface and a rear surface; alternating layers of metal oxide and reducing metal deposited upon the substrate, the alternating layers of metal oxide and reducing metal being structured to react with each other in response to an impact applied to the rear surface of the substrate; and a fuzzy interface layer disposed between each metal oxide layer and reducing metal layer, the fuzzy interface layer containing reducing metal, reducing metal oxide, and metal oxide, the reducing metal, reducing metal oxide, and metal oxide being at least partially mixed together. a substrate having a deposition surface and a rear surface; alternating layers of metal oxide and reducing metal deposited upon the substrate, the alternating layers of metal oxide and reducing metal being structured to react with each other in response to an impact applied to the rear surface of the substrate; and a fuzzy interface layer disposed between each metal oxide layer and reducing metal layer, the fuzzy interface layer containing reducing metal, reducing metal oxide, and metal oxide, the reducing metal, reducing metal oxide, and metal oxide being at least partially mixed together.

Google Patents

https://patents.google.com/patent/US12385727

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12385727