Particulate Ceramic Matrix Composites for High Strain-Rate Performance
Final technical rept. Dec 1983-Aug 1990
TECHNION RESEARCH AND DEVELOPMENT FOUNDATION LTD HAIFA (ISRAEL)
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Oxynitride glasses have promising dynamic properties for ballistic applications, notably both a high impedance and a high Hugoniot elastic limit HEL. The compatibility of these glasses with non-oxide filler materials was investigated, in particular their reaction with B4C, TiB2, and SiC. Only SiC was found to be inert at the glass-forming temperature, and 50mm diameter samples for planar impact experiments were hot-pressed with approximately 50 wt 600 grit SiC powder. These samples contained less than 2 porosity. The filler powder was completely wetted by the glass matrix and homogeneously dispersed in the matrix. No traces of crystalline phases other than SiC were detected. Both the static and the dynamic mechanical properties were determined. The ballistic impedance was approximately that expected from the law of mixtures, while the HEL was close to that of the parent glass.
- Ceramics, Refractories and Glass