Mechanical behaviour and constitutive models of ZDDP tribofilms on DLC coatings using nano-indentation data and finite element modelling
ID Bartolomé, Luis (Author), ID Oblak, Eva (Author), ID Kalin, Mitjan (Author)

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The mechanical behaviour of zinc dialkyldithiophosphate (ZDDP) tribofilms on diamond-like carbon (DLC) coatings has been studied by combining the nano-indentation experimental data and finite-element modelling. Different constitutive models, whose analysis was performed using a global algorithm that consists of forward and inverse algorithms, were chosen to establish which of them more accurately predicts the actual mechanical behaviour of the ZDDP tribofilms. A non-homogeneous, dual structure, which was also verified by the local stiffness using the AFM force-modulation mode, was found. Based on the proposed algorithm, the mechanical properties of the ZDDP tribofilms were found, e.g. the elastic modulus E=26 GPa and the yield stress Y=1.55 GPa for the harder component and approximately E=1.65 GPa and Y=0.144 GPa for the softer component.

Keywords:DLC coatings, ZDDP, finite-element method, AFM
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Publication status:Published
Publication version:Author Accepted Manuscript
Number of pages:Str. 19-26
Numbering:Vol. 95
PID:20.500.12556/RUL-106737 This link opens in a new window
ISSN on article:0301-679X
DOI:10.1016/j.triboint.2015.10.036 This link opens in a new window
COBISS.SI-ID:14342939 This link opens in a new window
Publication date in RUL:14.03.2019
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Record is a part of a journal

Title:Tribology international
Shortened title:Tribol. int.
COBISS.SI-ID:26558976 This link opens in a new window

Secondary language

Keywords:DLC prevleke, metoda končnih elementov, mazanje, tribologija


Funder:ARRS - Slovenian Research Agency
Project number:P2-0231

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