Limited-life cartridge primers
Abstract
A cartridge primer which utilizes an explosive that can be designed to become inactive in a predetermined period of time: a limited-life primer. The explosive or combustible material of the primer is an inorganic reactive multilayer (RML). The reaction products of the RML are sub-micron grains of non-corrosive inorganic compounds that would have no harmful effects on firearms or cartridge cases. Unlike use of primers containing lead components, primers utilizing RML's would not present a hazard to the environment. The sensitivity of an RML is determined by the physical structure and the stored interfacial energy. The sensitivity lowers with time due to a decrease in interfacial energy resulting from interdiffusion of the elemental layers. Time-dependent interdiffusion is predictable, thereby enabling the functional lifetime of an RML primer to be predetermined by the initial thickness and materials selection of the reacting layers.
- Inventors:
-
- Livermore, CA
- San Ramon, CA
- Publication Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- OSTI Identifier:
- 871665
- Patent Number(s):
- US 5773748
- Assignee:
- Regents of University of California (Oakland, CA)
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- limited-life; cartridge; primers; primer; utilizes; explosive; designed; inactive; predetermined; period; time; combustible; material; inorganic; reactive; multilayer; rml; reaction; products; sub-micron; grains; non-corrosive; compounds; harmful; effects; firearms; unlike; containing; lead; components; utilizing; hazard; environment; sensitivity; determined; physical; structure; stored; interfacial; energy; lowers; due; decrease; resulting; interdiffusion; elemental; layers; time-dependent; predictable; enabling; functional; lifetime; initial; thickness; materials; selection; reacting; inorganic compounds; organic compound; organic compounds; reaction product; reaction products; combustible material; predetermined period; energy resulting; containing lead; harmful effects; reactive multilayer; cartridge primer; time due; /102/149/
Citation Formats
Makowiecki, Daniel M, and Rosen, Robert S. Limited-life cartridge primers. United States: N. p., 1998.
Web.
Makowiecki, Daniel M, & Rosen, Robert S. Limited-life cartridge primers. United States.
Makowiecki, Daniel M, and Rosen, Robert S. 1998.
"Limited-life cartridge primers". United States. https://www.osti.gov/servlets/purl/871665.
@article{osti_871665,
title = {Limited-life cartridge primers},
author = {Makowiecki, Daniel M and Rosen, Robert S},
abstractNote = {A cartridge primer which utilizes an explosive that can be designed to become inactive in a predetermined period of time: a limited-life primer. The explosive or combustible material of the primer is an inorganic reactive multilayer (RML). The reaction products of the RML are sub-micron grains of non-corrosive inorganic compounds that would have no harmful effects on firearms or cartridge cases. Unlike use of primers containing lead components, primers utilizing RML's would not present a hazard to the environment. The sensitivity of an RML is determined by the physical structure and the stored interfacial energy. The sensitivity lowers with time due to a decrease in interfacial energy resulting from interdiffusion of the elemental layers. Time-dependent interdiffusion is predictable, thereby enabling the functional lifetime of an RML primer to be predetermined by the initial thickness and materials selection of the reacting layers.},
doi = {},
url = {https://www.osti.gov/biblio/871665},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 1998},
month = {Thu Jan 01 00:00:00 EST 1998}
}