Shock-induced chemical synthesis of intermetallic compounds

Conference · Fri Jan 01 04:00:00 EST 1988

OSTI ID:6482798

Work, S J; Yu, Li-Hsing; Thadhani, N N; Meyers, M A; Graham, R A; Hammetter, W F

Shock synthesis experiments were performed on elemental powder mixtures of Ni-Al and Nb-Al, to study the effect of material parameters on solid-state chemical synthesis. Elemental powders of different morphologies were pre-mixed in a proportion of /approximately/65 wt% Ni, or Nb, and 35 wt% Al. Shock-compression loading experiments were conducted on Ni-Al mixtures at 19-22 GPa pressures using the Sandia Bear fixtures, and on Nb-Al mixtures at 30-40 GPa pressures using a 12-capsule Sawaoka recovery fixture. In the case of Ni-Al mixtures the starting powder morphology plays a significant role in determining the extent of reaction. The Nb-Al powder mixtures shock processed at higher pressures underwent complete reaction. Preliminary results of the shock synthesis experiments on the nickel and niobium aluminide systems are presented, with particular emphasis on the characteristics of the reaction products. 32 refs., 13 figs., 1 tab.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 6482798
• Report Number(s): SAND-88-1558C; CONF-8810203-2; ON: DE89007035
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
360102 -- Metals & Alloys-- Structure & Phase Studies
360103 -- Metals & Alloys-- Mechanical Properties
ALLOYS
ALUMINIUM ALLOYS
COHERENT SCATTERING
DIFFRACTION
ELECTRON MICROSCOPY
HARDNESS
IMAGE PROCESSING
IMPACT SHOCK
INTERMETALLIC COMPOUNDS
MECHANICAL PROPERTIES
MICROHARDNESS
MICROSCOPY
MORPHOLOGY
NICKEL ALLOYS
NICKEL BASE ALLOYS
NIOBIUM ALLOYS
NIOBIUM BASE ALLOYS
POWDERS
PROCESSING
SCATTERING
SYNTHESIS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION