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Spatio-temporal behaviour of atomic-scale tribo-ceramic films in adaptive surface engineered nano-materials.


ABSTRACT: Atomic-scale, tribo-ceramic films associated with dissipative structures formation are discovered under extreme frictional conditions which trigger self-organization. For the first time, we present an actual image of meta-stable protective tribo-ceramics within thicknesses of a few atomic layers. A mullite and sapphire structure predominates in these phases. They act as thermal barriers with an amazing energy soaking/dissipating capacity. Less protective tribo-films cannot sustain in these severe conditions and rapidly wear out. Therefore, a functional hierarchy is established. The created tribo-films act in synergy, striving to better adapt themselves to external stimuli. Under a highly complex structure and non-equilibrium state, the upcoming generation of adaptive surface engineered nano-multilayer materials behaves like intelligent systems - capable of generating, with unprecedented efficiency, the necessary tribo-films to endure an increasingly severe environment.

SUBMITTER: Fox-Rabinovich G 

PROVIDER: S-EPMC5390086 | biostudies-other | 2015 Mar

REPOSITORIES: biostudies-other

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Spatio-temporal behaviour of atomic-scale tribo-ceramic films in adaptive surface engineered nano-materials.

Fox-Rabinovich G G   Kovalev A A   Veldhuis S S   Yamamoto K K   Endrino J L JL   Gershman I S IS   Rashkovskiy A A   Aguirre M H MH   Wainstein D L DL  

Scientific reports 20150305


Atomic-scale, tribo-ceramic films associated with dissipative structures formation are discovered under extreme frictional conditions which trigger self-organization. For the first time, we present an actual image of meta-stable protective tribo-ceramics within thicknesses of a few atomic layers. A mullite and sapphire structure predominates in these phases. They act as thermal barriers with an amazing energy soaking/dissipating capacity. Less protective tribo-films cannot sustain in these sever  ...[more]

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