Shock-induced chemical reactions in a Ni/Al powder mixture

Journal Article · Sun Jun 01 00:00:00 EDT 1997 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.119172· OSTI ID:529994

Yang, Y; Gould, R D; Horie, Y ^[1]; Iyer, K R ^[2]

---

1. North Carolina State University, Raleigh, North Carolina 27695 (United States)
2. U.S. Army Research Office, Research Triangle Park, North Carolina 27709 (United States)

A new 50 mm powder gun was used to reproduce and to extend the real-time observations of ultra-fast exothermic reactions in a Ni/Al powder mixture at the shock front. Shock profiles measured by a manganin gauge show that (1) the threshold pressure for reaction is about 14 GPa; (2) the initiation criteria based either on shock energy or melting are in contradiction with experimental evidence. {copyright} {ital 1997 American Institute of Physics.}

• OSTI ID: 529994
• Journal Information: Applied Physics Letters, Vol. 70, Issue 25; Other Information: PBD: Jun 1997
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
36 MATERIALS SCIENCE
NICKEL
CHEMICAL REACTIONS
ALUMINIUM
IMPACT SHOCK
POWDERS
VERY HIGH PRESSURE
PRESSURE MEASUREMENT