Shock sensitivity of the explosive 2-(5-Cyanotetrazolato) Pentaamine Cobalt(III) Perchlorate (CP)

Conference · Fri Jan 01 00:00:00 EST 1982

OSTI ID:5217605

Fogelson, D. J.; Schwarz, A. C.

The inorganic explosive, 2-(5-Cyanotetrazolato) Pentaamine Cobalt(III) Perchlorate, more commonly designated CP, is used in a number of hot-wire initiated deflagration-to-detonation detonators. Analyses of the safety aspects of these detonators are dependent upon utilizing shock initiation sensitivity data on this explosive where sensitivity is defined as the amplitude (P) and duration (tau) of the shock stimulus which produces a 50% probability of initiation. In this work the shock sensitivity of CP powder pressed to 1.50 Mg/m/sup 3/ bulk density was determined using flyer plate impact techniques which provided pulse durations of 0.17 ..mu..s and 0.23 ..mu..s and pulse amplitudes of 0.8 to 2.3 GPa. Impact tests were conducted in air and vacuum, and with flyers of different area. It was necessary to develop a new test technique to generate flyer velocities to bracket the threshold of initiation for this study. This was done by electrically exploding a metal foil against a lucite shock-moderator from which a plastic flyer lifted off at a controlled velocity. The energy source was a large capacitor bank and provided flyer velocities repeatable within 7% and with a planarity of 30 ns or less. The pressure thresholds for detonation of CP were found to be 1.75 GPa and 1.40 GPa, for pulse durations of 0.17 ..mu..s and 0.23 ..mu..s respectively. There was no discernible difference in response between samples tested in air or vacuum, or with flyers of different area, within experimental error.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA); Ktech Corp., Albuquerque, NM (USA)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 5217605
• Report Number(s): SAND-82-0478C; CONF-820710-2; ON: DE82013637; TRN: 82-016392
• Resource Relation: Conference: 8. international pyrotechnics symposium, Steamboat Springs, CO, USA, 12 Jul 1982
• Country of Publication: United States
• Language: English

Related Subjects

45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
CHEMICAL EXPLOSIVES
IMPACT TESTS
SENSITIVITY
DETONATORS
SAFETY
EXPERIMENTAL DATA
IMPACT SHOCK
DATA
EXPLOSIVES
INFORMATION
MATERIALS TESTING
MECHANICAL TESTS
NUMERICAL DATA
TESTING
450100* - Military Technology
Weaponry
& National Defense- Chemical Explosions & Explosives