Back to results
US 11,976,016 B2Granted
Coatings on particles of high energy materials and methods of forming same
AssigneeForge Nano, Inc.
InventorsArrelaine Dameron, Ryon Tracy, Jessica Burger, Chris Gump, Andrew Broerman
Life of this patent
Estimating the term…
Abstract
The present invention relates to the field of coatings on high-energy materials, devices or products that comprise the coated high-energy materials, functional coating materials and methods for producing and using the same. In particular, the present invention relates to energetic materials having initiated release coatings to improve the performance and shelf-life of the devices, products and/or raw materials, suitable for use as energetics or propellants for munitions, rockets, pyrotechnics, flares or other devices or components.
Claims16
A method of making a coated particle, comprising:
- providing core particles, wherein the core particles comprises at least 70% Al, having particle surfaces and moving the core particles to expose the particle surfaces in a first reaction chamber;
- first dosing the core particles with an amount of first precursor that is less than that required to fully saturate all the surfaces to form first coated particles;
- after the first dosing, evacuate or purge the first reaction chamber, and/or transport the first coated particles to a second reaction chamber;
- second dosing the first coated particles with an amount of first precursor that is less than that required to fully saturate all the surfaces on the core particles to form second coated particles in the first reaction chamber or the second reaction chamber;
- wherein there is no step of reacting with a second precursor between the first dosing and the second dosing;
- after the second dosing, evacuate or purge the reaction chamber used in the second dosing step;
- and
- third dosing the second coated particles with a second precursor wherein the second precursor reacts with the coated particles to form a passivation coating on the core particles.
5 more elements
A method of making a coated particle, comprising:
- providing core particles having particle surfaces and moving the core particles to expose the particle surfaces in a first reaction chamber;
- first dosing the core particles with an amount of first precursor that is less than that required to fully saturate all the surfaces to form first coated particles;
- after the first dosing, evacuate or purge the first reaction chamber, and/or transport the first coated particles to a second reaction chamber;
- second dosing the first coated particles with an amount of first precursor that is less than that required to fully saturate all the surfaces on the core particles to form second coated particles in the first reaction chamber or the second reaction chamber;
- wherein there is no step of reacting with a second precursor between the first dosing and the second dosing;
- after the second dosing, evacuate or purge the reaction chamber used in the second dosing step;
- and
- third dosing the second coated particles with a second precursor wherein the second precursor reacts with the coated particles to form a passivation coating on the core particles;
- wherein the system for vapor deposition further comprises:
- a scale;
- the precursor container resting on the scale;
- a flexible conduit providing a fluid connection between the precursor container and a process gas stream conduit;
- and
- wherein a valve is disposed between the flexible conduit and the process gas stream conduit.
11 more elements
A method of making a coated particle, comprising:
- providing core particles, wherein the core particle is metallic or semi-metallic and comprises 50 to 99.9 mass % of one or more transition metals plus silicon, and 0.1 to 40 mass % alkali or alkaline earth elements plus hydrogen, having particle surfaces and moving the core particles to expose the particle surfaces in a first reaction chamber;
- first dosing the core particles with an amount of first precursor that is less than that required to fully saturate all the surfaces to form first coated particles;
- after the first dosing, evacuate or purge the first reaction chamber, and/or transport the first coated particles to a second reaction chamber;
- second dosing the first coated particles with an amount of first precursor that is less than that required to fully saturate all the surfaces on the core particles to form second coated particles in the first reaction chamber or the second reaction chamber;
- wherein there is no step of reacting with a second precursor between the first dosing and the second dosing;
- after the second dosing, evacuate or purge the reaction chamber used in the second dosing step;
- and
- third dosing the second coated particles with a second precursor wherein the second precursor reacts with the coated particles to form a passivation coating on the core particles.
5 more elements
A method of making a coated particle, comprising:
- providing core particles, wherein the core particle comprises a silicon or transition metal hydride comprising 2 to 5 mass % H, having particle surfaces and moving the core particles to expose the particle surfaces in a first reaction chamber;
- first dosing the core particles with an amount of first precursor that is less than that required to fully saturate all the surfaces to form first coated particles;
- after the first dosing, evacuate or purge the first reaction chamber, and/or transport the first coated particles to a second reaction chamber;
- second dosing the first coated particles with an amount of first precursor that is less than that required to fully saturate all the surfaces on the core particles to form second coated particles in the first reaction chamber or the second reaction chamber;
- wherein there is no step of reacting with a second precursor between the first dosing and the second dosing;
- after the second dosing, evacuate or purge the reaction chamber used in the second dosing step;
- and
- third dosing the second coated particles with a second precursor wherein the second precursor reacts with the coated particles to form a passivation coating on the core particles.
5 more elements
Dependencies are inferred from the claim text.