Ontology highlight
ABSTRACT:
SUBMITTER: Misawa M
PROVIDER: S-EPMC5429036 | biostudies-literature | 2017 May
REPOSITORIES: biostudies-literature
Science advances 20170512 5
It is extremely difficult to realize two conflicting properties-high hardness and toughness-in one material. Nano-polycrystalline stishovite, recently synthesized from Earth-abundant silica glass, proved to be a super-hard, ultra-tough material, which could provide sustainable supply of high-performance ceramics. Our quantum molecular dynamics simulations show that stishovite amorphizes rapidly on the order of picosecond under tension in front of a crack tip. We find a displacive amorphization m ...[more]