CMF e a protecção térmica

http://www.techtimes.com/articles/148127/20160408/watch-lightweight-metal-foam-turn-armor-piercing-bullet-into-dust.htm
Citando:
"(...) new composite metal foams (CMFs) have excellent thermal protection compared to plain metal, turning armor piercing bullet into dust.


(...) The presence of air pockets inside CMF make it so effective at blocking heat, mainly because heat travels more slowly through air than through metal."