Structure, mechanical and tribological properties of MoSe2 and Mo-Se-N solid lubricant coatings

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F21%3A00348861" target="_blank" >RIV/68407700:21230/21:00348861 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1016/j.surfcoat.2020.126536" target="_blank" >https://doi.org/10.1016/j.surfcoat.2020.126536</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.surfcoat.2020.126536" target="_blank" >10.1016/j.surfcoat.2020.126536</a>

Result language

angličtina

Original language name

Structure, mechanical and tribological properties of MoSe2 and Mo-Se-N solid lubricant coatings

Original language description

Mo-Se-N films were prepared by pulsed direct current (DC) High Target Utilisation Sputtering (HiTUS) in reactive Ar + N-2 atmosphere. Here, the effect of nitrogen doping was studied. MoSex film with Se/Mo atomic ratio similar to 2 exhibited polycrystalline structure and the lowest coefficients of friction (COFs) in humid air from 0.025 to 0.1 for loads in the range 2-45 N. Mo-Se-N coatings were deposited with N concentrations ranging from 1 to 40 at.%, whereas Se/Mo ratio varied from 0.6 to 2. Mo-Se-N coatings formed amorphous structures for the N contents above 7 at.% and increased hardness proportional with the N content up to 9 GPa. The addition of nitrogen also resulted in a general decrease in wear rate of two orders of magnitude when compared to pristine films while retaining a reasonably low coefficient of friction. Mo-Se-N films showed notable COF values in humid environment ranging from 0.22 to 0.015 when tested using loads from 2 to 45 N. The excellent friction properties of Mo-Se-N films were associated to the crystallisation of a MoSe2 tribofilm in the wear scar. Moreover, we showed that modern pulsed DC HiTUS technology represents a suitable way of producing thin films with a variety of elemental compositions and desired mechanical and tribological properties, even from sensitive, semiconducting and extremely low thermally conductive MoSe2 targets.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20506 - Coating and films

Project

<a href="/en/project/EF16_026%2F0008396" target="_blank" >EF16_026/0008396: Novel nanostructures for engineering applications enabled by emerging techniques supported by advanced simulations</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Surface & Coatings Technology

ISSN

0257-8972

e-ISSN

1879-3347

Volume of the periodical

405

Issue of the periodical within the volume

January

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

12

Pages from-to

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UT code for WoS article

000604583200024

EID of the result in the Scopus database

2-s2.0-85094568484