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Title: A molecular dynamics survey study of impact-induced amorphization in yttria nanoparticles

Journal Article · · Journal of Aerosol Science

The impact of a single yttria (Y2O3) nanoparticle onto a yttria substrate was studied as a function of particle velocity (300–1200 m/s) and diameter (5–12 nm) for three particle orientations and two substrate orientations using molecular dynamics simulations. Impacts resulted in minimal dislocation motion but extensive disordering of the crystal lattice without approaching the melting temperature. The resulting amorphous microstructure was both precisely coincident with plastic strain and retained until the end of the simulation, suggesting a deformation mechanism of amorphization-facilitated viscous flow. Further analysis revealed that the degree of amorphization depended primarily on the impact velocity and secondarily on the orientations of the particle and substrate, with significant second-order effects from variable interactions.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
89233218CNA000001
OSTI ID:
1862814
Report Number(s):
LA-UR-21-31225
Journal Information:
Journal of Aerosol Science, Journal Name: Journal of Aerosol Science Vol. 162; ISSN 0021-8502
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (30)

Fast Parallel Algorithms for Short-Range Molecular Dynamics journal March 1995
Surface and grain-boundary energies as well as surface mass transport in polycrystalline yttrium oxide journal November 2009
A Self-Consistent Scheme for Understanding Particle Impact and Adhesion in the Aerosol Deposition Process journal February 2021
Jet molding system for realization of three-dimensional micro-structures journal June 1998
Thermodynamic properties of Y2O3 phases and the yttrium–oxygen phase diagram journal May 1998
Deposition mechanism of dry sprayed ceramic particles at room temperature using a nano-particle deposition system journal April 2011
Particle deposition and deformation from high speed impaction of Ag nanoparticles journal August 2017
Impact-induced bonding and boundary amorphization of TiN ceramic particles during room temperature vacuum cold spray deposition journal January 2016
Promotion of the fragmentation and densification for a dense vacuum kinetic-sprayed Y2O3 coating by heat-treatment of feedstock powder journal May 2020
Deformation of copper particles upon impact: A molecular dynamics study of cold spray journal January 2020
Considerations for choosing and using force fields and interatomic potentials in materials science and engineering journal December 2013
The importance of intimate inter-crystallite bonding for the plasma erosion resistance of vacuum kinetic sprayed Y2O3 coating journal September 2019
Ultrafast thermomechanical effects in aerosol deposition of hydroxyapatite nanoparticles on a titanium substrate journal January 2020
Bonding formation in vacuum kinetic-sprayed Y2O3 particles induced by high-velocity impact journal July 2020
Visualization and analysis of atomistic simulation data with OVITO–the Open Visualization Tool journal December 2009
Evaluating variability with atomistic simulations: the effect of potential and calculation methodology on the modeling of lattice and elastic constants journal May 2018
Local structure and lattice dynamics of cubic Y 2 O 3 : an x-ray absorption spectroscopy study journal March 2015
Molecular-dynamics study of a three-dimensional one-component model for distortive phase transitions journal February 1978
Bond-orientational order in liquids and glasses journal July 1983
Molecular dynamics simulation of the structure of yttria Y 2 O 3 phases using pairwise interactions journal October 2001
Atomistic structure of oxide nanoparticles supported on an oxide substrate journal June 2002
Modeling of film growth by cluster deposition: The effect of size and energy journal June 2009
Aerosol Deposition of Ceramic Thick Films at Room Temperature: Densification Mechanism of Ceramic Layers journal June 2006
Plasma-Resistant Dense Yttrium Oxide Film Prepared by Aerosol Deposition Process journal August 2007
Room temperature impact‐induced deposition of pure SiC coating layer by vacuum kinetic spraying journal July 2019
An Analysis of the Cold Spray Process and Its Coatings journal December 2002
Molecular Dynamics Simulation on the Single Particle Impacts in the Aerosol Deposition Process journal January 2005
Molecular Dynamics Simulation on the Modification of Crystallographic Orientation in Fragmented Particles in the Aerosol-Deposition Process journal January 2007
Room-temperature Preparation of Al2O3Thick Films by Aerosol Deposition Method for Integrated RE Modules journal August 2003
Fabrication of Y2O3 coatings by cold-spray journal March 2019