Functional Graded Material with Nano Coating for Protection
Ceramic composite armour in general utilises a front layer of dense ceramic, typically backed by a second layer of metal. Thereby creating a sharp interface that is the weakest link within the material system and would result in cracking of the ceramic prematurely and hence not able to provide the requisite protection. One promising possibility has been found is the use of functionally gradient materials as armour materials. In such materials, the high hardness of ceramics is combined with the ductility of metals. Laboratory scale experiments were being performed to exhibit the potential of this material in terms of physical and mechanical properties. A comparison was made with the current ceramic armour system and it was found that the new material system had better ballistic properties.
William Lau, Shang Huai Min, Lee Nam Sua, Ma Jan and Alfred Tok
S. E. Leng "Functional Graded Material with Nano Coating for Protection", Solid State Phenomena, Vol. 136, pp. 93-98, 2008