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Molecular dynamics simulation of nanoindentation in cr, al layers and al/cr bilayers, using a hard spherical nanoindenter
(Universidad Nacional de Colombia Sede Medellín, 2014-08-25)
Three-dimensional molecular dynamics (MD) simulations of a nanoindentation technique using the hard sphere method for Cr (bcc) and Al (fcc) thin films and (Cr/Al)n (n=1,2) systems were carried out. For the model implementation, ...
Integral nanoindentation evaluation of TiO2, SnO2, and ZnO thin films deposited via spray-pyrolysis on glass substrates
(Springer, 2018-11)
Tin, titanium and zinc oxide thin films were deposited on glass substrates by spray-pyrolysis. According to the resolution of XRD and SEM, films are single phase and of uniform surfaces. Elastic modulus and film hardness ...
Young’s modulus and hardness of multiphase CaZrO3-MgO ceramics by micro and nanoindentation
(Elsevier, 2018-04)
The aim of this work is to determine the values of the hardness and elastic modulus of the phases present in CaZrO3-MgO-ZrO2 composites and to analyse their contribution to the composite properties. Two materials previously ...
Atomistic simulation of tantalum nanoindentation: effects of indenter diameter, penetration velocity, and interatomic potentials on defect mechanisms and evolution
(Elsevier Science Sa, 2014-07)
Nanoindentation simulations are a helpful complement to experiments. There is a dearth of nanoindentation simulations for bcc metals, partly due to the lack of computationally efficient and reliable interatomic potentials ...
Plastic deformation in nanoindentation of tantalum: A new mechanism for prismatic loop formation
(Elsevier, 2014-08)
The mechanisms of deformation under a nanoindentation in tantalum, chosen as a model body-centered cubic (bcc) metal, are identified and quantified. Molecular dynamics (MD) simulations and indentation experiments are ...
Using the ultrasound and instrumented indentation techniques to measure the elastic modulus of engineering materials
(CENIM, 2008)
Currently, the acoustic and nanoindentation techniques are two of the most used techniques for material elastic modulus measurement. In this article fundamental principles and limitations of both techniques are shown and ...
Generation of quantum dots via nanoindentation in MoS2: via nanoindentation in MoS2
(Universidade Federal de Minas GeraisUFMG, 2016-07-21)
We predict the confinement of excitons in quantum dots generated by strain via the atomic force microscope (AFM) in atomically thin molybdenum disulfide (MoS2). MoS2 is a transition metal dichalcogenide (TMDC) and a ...
Comparative simulation study of the structure of the plastic zone produced by nanoindentation
(Pergamon-Elsevier Science Ltd, 2015-11)
Using molecular-dynamics simulation, we study nanoindentation in fcc (Cu and Al) and bcc (Fe and Ta) metals by a spherical indenter and investigate the size of the plastic zone generated. We find that while it does not ...