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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20506 - Coating and films

Projekt

<a href="/cs/project/EF16_026%2F0008396" target="_blank" >EF16_026/0008396: Nové nanostruktury pro inženýrské aplikace umožněné kombinací moderních technologií a pokročilých simulací</a><br>

Návaznosti

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

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Surface & Coatings Technology

ISSN

0257-8972

e-ISSN

1879-3347

Svazek periodika

405

Číslo periodika v rámci svazku

January

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

12

Strana od-do

—

Kód UT WoS článku

000604583200024

EID výsledku v databázi Scopus

2-s2.0-85094568484