Microstructure of explosively compacted aluminum nitride ceramic

Conference · Fri May 01 04:00:00 EDT 1981

OSTI ID:6325762

Gourdin, W H; Echer, C J; Cline, C F; Tanner, L E

Observations are reported of the microstructure of aluminum nitride (A1N) ceramic produced by explosive consolidation of the powder. Similarities between the grain structure of the compact and the starting powders are striking. Grain growth does not occur during densification and the 0.1 ..mu.. particle size of the powder is retained, although considerable deformation is introduced into individual grains. Of particular interest is an intergranular phase which appears throughout the compact. Observations in the transmission electron microscope indicate that this phase is amorphous.The influence of this glassy intergranular phase on bonding is discussed. 5 figures.

• Research Organization: Lawrence Livermore National Lab., CA (USA); Lawrence Berkeley Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6325762
• Report Number(s): UCRL-85274; CONF-810910-1
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ALUMINIUM COMPOUNDS
ALUMINIUM NITRIDES
COMPACTING
COMPACTS
CRYSTAL STRUCTURE
ELECTRON MICROSCOPY
EXPLOSIONS
EXPLOSIVE FORMING
FABRICATION
GRAIN SIZE
MATERIALS WORKING
MICROSCOPY
MICROSTRUCTURE
NITRIDES
NITROGEN COMPOUNDS
PNICTIDES
POWDERS
SIZE