Atomic-scale interaction of a crack and an infiltrating fluid
| Autor: | Jessica M. Rimsza, Louise J. Criscenti, Reese E. Jones, William C. Tucker |
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| Rok vydání: | 2019 |
| Předmět: |
Condensed Matter - Materials Science
Work (thermodynamics) Materials science Binding energy lcsh:QD450-801 Materials Science (cond-mat.mtrl-sci) FOS: Physical sciences General Physics and Astronomy lcsh:Physical and theoretical chemistry Radius Mechanics Condensed Matter - Soft Condensed Matter Atomic units lcsh:QC1-999 Surface energy Physics::Geophysics Fracture toughness Soft Condensed Matter (cond-mat.soft) Physical and Theoretical Chemistry Scaling lcsh:Physics Dimensionless quantity |
| Zdroj: | Chemical Physics Letters: X, Vol 1, Iss, Pp-(2019) |
| ISSN: | 0009-2614 |
| DOI: | 10.1016/j.cpletx.2018.100005 |
| Popis: | In this work we investigate the Orowan hypothesis, that decreases in surface energy due to surface adsorbates lead directly to lowered fracture toughness, at an atomic/molecular level. We employ a Lennard-Jones system with a slit crack and an infiltrating fluid, nominally with gold-water properties, and explore steric effects by varying the soft radius of fluid particles and the influence of surface energy/hydrophobicity via the solid-fluid binding energy. Using previously developed methods, we employ the J-integral to quantify the sensitivity of fracture toughness to the influence of the fluid on the crack tip, and exploit dimensionless scaling to discover universal trends in behavior. Comment: 5 pages, 4 figures |
| Databáze: | OpenAIRE |
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