Nanoindentation of inhomogeneous mesh-like carbon-containing nanocoating on elastic polyurethane

Heterogeneous nanocoatings obtained by argon-acetylene plasma treatment of the elastic polyurethane surface are studied. The structural and mechanical properties of the coatings are determined by atomic force microscopy and finite element modeling. During nanoindentation of the treated surface, the...

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Bibliographic Details
Main Authors: Morozov, I. A., Beliaev, A. Yu, Kamenetskikh, A. S.
Format: Conference Proceeding
Language:English
Subjects:
Acetylene
Argon
Atomic force microscopy
Biomedical materials
Coatings
Finite element method
Mathematical models
Mechanical properties
Modulus of elasticity
Nanoindentation
Parabolic bodies
Polyurethane resins
Substrates
Thickness
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Summary:Heterogeneous nanocoatings obtained by argon-acetylene plasma treatment of the elastic polyurethane surface are studied. The structural and mechanical properties of the coatings are determined by atomic force microscopy and finite element modeling. During nanoindentation of the treated surface, the probe presses the coating into the soft substrate and eventually pierces it. Measuring the depth of the imprint allowed determining the thickness of the coatings (1.6 nm). Comparison of the initial part of the indentation curve (prior to piercing) with the model calculations (stiff paraboloid indents the layer of known thickness on an elastic substrate) allows us to estimate the elastic modulus of the coating (several GPa). The obtained materials can be used in the manufacture of flexible biomedical products with improved properties.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0036876