Characteristics of shock-compressed configuration of Ti and Si powder mixtures

Conference · Sun Jul 10 00:00:00 EDT 1994 · AIP Conference Proceedings (American Institute of Physics); (United States)

OSTI ID:7183131

Thadhani, N N ^[1]; Dunbar, E ^[2]; Graham, R A ^[3]

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1. Georgia Tech, School of Materials Science and Engineering, Atlanta, Georgia 30062 (United States)
2. New Mexico Tech, EmRTC, Scoorro, New Mexico 87801 (United States)
3. Sandia National Laboratories, Albuquerque, New Mexico 87185 (United States)

Shock-compression recovery experiments were performed on mixtures of Ti and Si powders of [bold fine], [bold medium], and [bold coarse] morphology, and packed at different initial densities, using the Sandia Momma and Poppa Bear fixtures with Baratol explosive. The shock-compressed configuration revealed characteristics typical of either chemically reacted material with [ital fine] equiaxed grains, or unreacted material with density packed Ti and Si particles. The unreacted configuration showed that Ti particles were extensively deformed, irrespective of powder morphology and shock conditions generated by either fixture. In contrast Si particles showed different characteristics depending on the powder morphology, packing density, and shock conditions. The microstructural characteristics of unreacted configuration of Ti and Si powder mixtures were investigated. Mechanistic processes occurring prior to the inception of [ital shock]-[ital induced] [ital chemical] [ital reactions] in this system are described. [copyright]American Institute of Physics

• OSTI ID: 7183131
• Report Number(s): CONF-921145--
• Journal Information: AIP Conference Proceedings (American Institute of Physics); (United States), Journal Name: AIP Conference Proceedings (American Institute of Physics); (United States) Vol. 309:1; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
360201 -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
CHEMICAL REACTIONS
COMPRESSION
DENSITY
MICROSTRUCTURE
PARTICLE SIZE
PHYSICAL PROPERTIES
POWDERS
SHOCK WAVES
SILICIDES
SILICON COMPOUNDS
SIZE
SYNTHESIS
TITANIUM COMPOUNDS
TITANIUM SILICIDES
TRANSITION ELEMENT COMPOUNDS
VERY HIGH PRESSURE