Accession Number : ADA608224


Title :   Lead Free Electric Primer


Descriptive Note : Final technical rept. Feb 2004-Dec 2006


Corporate Author : NAVAL AIR WARFARE CENTER WEAPONS DIV CHINA LAKE CA


Personal Author(s) : Brewer, Robert ; Dixon, Phil ; Ford, Sarah ; Higa, Kelvin ; Jones, Ron


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a608224.pdf


Report Date : 06 Oct 2011


Pagination or Media Count : 97


Abstract : NAWCWD overcame some major obstacles, meeting both the low-temperature firing requirement (-65?F) 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 aluminum/molybdenum formulation. This demonstrates that the LFEP can be used with suitable safety guidelines. The final formulation consisted of 76% Al(50nm)/MoO3(45nm), 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.


Descriptors :   *ELECTRIC PRIMERS , *LEAD(METAL) , ALUMINUM , BARRIERS , FORMULATIONS , MOLYBDENUM , OXIDES , POWDER METALS , STABILITY


Subject Categories : Inorganic Chemistry
      Ammunition and Explosives


Distribution Statement : APPROVED FOR PUBLIC RELEASE