Title: Carbon Displacement-Induced Single Carbon Atomic Chain Formation and its Effects on Sliding of SiC Fibers in SiC/graphene/SiC Composite

Journal Article · · Materials Research Letters
 [1];  [2];  [2]
  1. Texas A & M Univ., College Station, TX (United States); Department of Nuclear Engineering, Texas A&M University, College Station, TX
  2. Texas A & M Univ., College Station, TX (United States)

Understanding radiation effects on the mechanical properties of SiC composites is important to their application in advanced reactor designs. By means of molecular dynamics simulations, we found that due to strong interface bonding between the graphene layers and SiC, the sliding friction of SiC fibers is largely determined by the frictional behavior between graphene layers. Upon sliding, carbon displacements between graphene layers can act as seed atoms to induce the formation of single carbon atomic chains (SCACs) by pulling carbon atoms from the neighboring graphene planes. The formation, growth, and breaking of SCACs determine the frictional response to irradiation.

Research Organization:
Texas A & M Univ., College Station, TX (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
SC0006725
OSTI ID:
1436491
Journal Information:
Materials Research Letters, Journal Name: Materials Research Letters Journal Issue: 1 Vol. 4; ISSN 2166-3831
Publisher:
Taylor and FrancisCopyright Statement
Country of Publication:
United States
Language:
English

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Ion Beam Modification of Carbon Nanotube Yarn in Air and Vacuum journal July 2017
Sliding friction between two silicon-carbide surfaces journal March 2019