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Effect of Explosive Shock Waves on Ceramic Powders
Author(s) -
BERGMANN OSWALD R.,
BARRINGTON JONATHAN
Publication year - 1966
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1966.tb13308.x
Subject(s) - explosive material , ceramic , shock wave , materials science , shock (circulatory) , composite material , mineralogy , metallurgy , geology , mechanics , physics , archaeology , history , medicine
Powders of several ceramic materials were subjected to explosive shock waves and changes in their physical properties were studied. Very fine particle sized SiC and B 4 C could be produced without introducing impurities. Strong line broadening in the X‐ray diffraction pattern of shocked powders was observed and correlated with lattice strain and crystallite size reduction. Shocked CaCO 3 turned blue when exposed to X rays. Shocked powders gave higher tapped densities, higher green densities after pressing, and were unusually responsive to sintering. Explosive shocking may be a unique way of “cold‐working” ceramics and may permit subsequent control of their microstructure through primary recrystallization.