Lead Free Electric Primer
Final technical rept. Feb 2004-Dec 2006
NAVAL AIR WARFARE CENTER WEAPONS DIV CHINA LAKE CA
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NAWCWD overcame some major obstacles, meeting both the low-temperature firing requirement -65F and AUR action time less than 4ms. Many reformulations were required to optimize the LFEP composite. To date there has not been a single incident with the current aluminummolybdenum formulation. This demonstrates that the LFEP can be used with suitable safety guidelines. The final formulation consisted of 76 Al50nmMoO345nm, 20 BTATZ, 2 Kel-F, and 2 Carbon Black. A critical parameter for nano aluminum powder stability in air was a passivation oxide thickness of at least 2.7 nm. Al powders with thinner oxide layers aged badly resulting in poor primer performance.
- Inorganic Chemistry
- Ammunition and Explosives