The SiC powder and additives

4.3. Ballistic performance
Fig. 13. V50 ballistic performance correlations against (a) areal density, (b) 19.62 N Knoop (K) and Vickers (V) hardness, (c) Young\'s modulus and (d) HK(1 N) + plasticity and transition velocity values for B4C, SiC–AlN–C and SiC–5 wt.% B4C ceramics.Figure optionsDownload full-size imageDownload as PowerPoint slide
Whilst the validity of predicting transition velocities from indentation RS 17053 questionable, as acknowledged by the original authors,11 given the large differences in interaction volume and strain rate, the correlation with ballistic performance further highlights the importance of hardness in defeating AP projectiles and the potential for indentation to be used as a screening method to rank candidate ceramics.
5. Concluding remarks
AcknowledgementsThis research was undertaken as part of an Engineering Doctorate in Micro-and NanoMaterials and Technologies at the University of Surrey. Funding provided by the Engineering and Physical Sciences Research Council (EPSRC) (EP/G37388/1) and DSTL is root-leaf-vascular system axis gratefully acknowledged. Ballistic test data provided by DSTL, powder processing of the SiC–2.5 wt.% AlN–3 wt.% C sample by Imperial College London and SPS sample manufacture by Nanoforce Ltd., UK are also gratefully acknowledged.