Tribological Performance of MoS2 Coatings in Various Environments
Molybdenum disulfide (MoS2) is a well-known solid lubricant for tribosystems running in vacuum or dry gases. Problems arise due to its sensitivity to humidity, which is a drawback for its application under ambient conditions. However, by using a physical vapor deposition (PVD) process, deposition pa...
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| Format: | Article |
| Language: | English |
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MDPI AG
2016-09-01
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| Series: | Lubricants |
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| Online Access: | http://www.mdpi.com/2075-4442/4/3/32 |
| _version_ | 1811184641821900800 |
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| author | Thomas Gradt Thomas Schneider |
| author_facet | Thomas Gradt Thomas Schneider |
| author_sort | Thomas Gradt |
| collection | DOAJ |
| description | Molybdenum disulfide (MoS2) is a well-known solid lubricant for tribosystems running in vacuum or dry gases. Problems arise due to its sensitivity to humidity, which is a drawback for its application under ambient conditions. However, by using a physical vapor deposition (PVD) process, deposition parameters can be optimized not only to gain a coatings structure with favorable frictional properties but also to minimize the sensitivity to attack by water molecules. Therefore, an improved tribological behavior even under moist conditions can be achieved. MoS2 coatings are also candidates for being applied at cryogenic temperatures. They already have proven their suitability, e.g., for sliding support elements between superconducting magnets of the nuclear fusion-experiment Wendelstein 7-X. However, these coatings were exclusively produced for this particular application and the utilization for more common tribosystems may be precluded due to cost considerations. In view of a wider range of applications, pure and Cr containing PVD-MoS2 coatings with an optimized structure were tested under varying environments including hydrogen gas and cryogenic temperatures. Results of the most promising variant are presented in this paper. |
| first_indexed | 2024-04-11T13:15:50Z |
| format | Article |
| id | doaj.art-569d9466bd4b48d69d79f68ea61bd012 |
| institution | Directory Open Access Journal |
| issn | 2075-4442 |
| language | English |
| last_indexed | 2024-04-11T13:15:50Z |
| publishDate | 2016-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Lubricants |
| spelling | doaj.art-569d9466bd4b48d69d79f68ea61bd0122022-12-22T04:22:24ZengMDPI AGLubricants2075-44422016-09-01433210.3390/lubricants4030032lubricants4030032Tribological Performance of MoS2 Coatings in Various EnvironmentsThomas Gradt0Thomas Schneider1Federal Institute for Materials Research and Testing (BAM), 12205 Berlin, GermanyAiF Projekt GmbH, 13156 Berlin, GermanyMolybdenum disulfide (MoS2) is a well-known solid lubricant for tribosystems running in vacuum or dry gases. Problems arise due to its sensitivity to humidity, which is a drawback for its application under ambient conditions. However, by using a physical vapor deposition (PVD) process, deposition parameters can be optimized not only to gain a coatings structure with favorable frictional properties but also to minimize the sensitivity to attack by water molecules. Therefore, an improved tribological behavior even under moist conditions can be achieved. MoS2 coatings are also candidates for being applied at cryogenic temperatures. They already have proven their suitability, e.g., for sliding support elements between superconducting magnets of the nuclear fusion-experiment Wendelstein 7-X. However, these coatings were exclusively produced for this particular application and the utilization for more common tribosystems may be precluded due to cost considerations. In view of a wider range of applications, pure and Cr containing PVD-MoS2 coatings with an optimized structure were tested under varying environments including hydrogen gas and cryogenic temperatures. Results of the most promising variant are presented in this paper.http://www.mdpi.com/2075-4442/4/3/32solid lubricationMoS2extreme environmentshydrogencryogenic environment |
| spellingShingle | Thomas Gradt Thomas Schneider Tribological Performance of MoS2 Coatings in Various Environments Lubricants solid lubrication MoS2 extreme environments hydrogen cryogenic environment |
| title | Tribological Performance of MoS2 Coatings in Various Environments |
| title_full | Tribological Performance of MoS2 Coatings in Various Environments |
| title_fullStr | Tribological Performance of MoS2 Coatings in Various Environments |
| title_full_unstemmed | Tribological Performance of MoS2 Coatings in Various Environments |
| title_short | Tribological Performance of MoS2 Coatings in Various Environments |
| title_sort | tribological performance of mos2 coatings in various environments |
| topic | solid lubrication MoS2 extreme environments hydrogen cryogenic environment |
| url | http://www.mdpi.com/2075-4442/4/3/32 |
| work_keys_str_mv | AT thomasgradt tribologicalperformanceofmos2coatingsinvariousenvironments AT thomasschneider tribologicalperformanceofmos2coatingsinvariousenvironments |