INITIATION OF REACTIVE WAVES IN METALLIC POWDER MIXTURES USING A HIGH-EXPLOSIVE BOOSTER

Journal Article · Mon Dec 28 04:00:00 EST 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3295095· OSTI ID:21366847

Lee, Julian J ^[1]

---

1. DRDC Suffield, P.O. Box 4000 Stn Main, Medicine Hat, AB, T1A 8K6 (Canada)

Reactions were initiated in a number of metallic powder mixtures including titanium-silicon, titanium-boron, and aluminum with copper oxide or molybdenum trioxide. The reactions were initiated in long cylinders ten charge diameters in length filled with compacted powders of micron-size particles. The cylinders were fitted with a high explosive booster in a donor-acceptor configuration to initiate the reaction with a strong shock. Using embedded shock pins to detect the arrival of the shock and embedded fiberoptic cables to detect luminous reactions, the propagation of the transmitted shock and ensuing reaction was observed. The strong shock from the booster was found to transmit into the powder, then steadily decay until the end of the cylinder. A luminous front was found to follow the leading shock closely for two to four charge diameters, then gradually decouple and lag behind. Although the shock and reactive waves were found to propagate supersonically for a certain distance, self-sustained, reaction-driven waves were clearly not observed as the waves rapidly decayed and displayed behavior akin to shock-assisted reactions reaching completion long after the passage of the shock front.

• OSTI ID: 21366847
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1195; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM
BORON
CABLES
CHALCOGENIDES
CHEMICAL EXPLOSIVES
COPPER COMPOUNDS
COPPER OXIDES
CYLINDERS
ELEMENTS
EXPLOSIONS
EXPLOSIVES
METALS
MOLYBDENUM COMPOUNDS
MOLYBDENUM OXIDES
OXIDES
OXYGEN COMPOUNDS
POWDERS
REFRACTORY METAL COMPOUNDS
SEMIMETALS
SHOCK WAVES
SILICON
TITANIUM
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS