Effect of Molybdenum Concentration and Deposition Temperature on the Structure and Tribological Properties of the Diamond-like Carbon Films
Two series of non-hydrogenated diamond-like carbon (DLC) films and molybdenum doped diamond-like carbon (Mo-DLC) films were grown on the silicon substrate using direct current magnetron sputtering. The influence of molybdenum doping (between 6.3 and 11.9 at.% of Mo), as well as the deposited tempera...
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2024-11-01
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| Series: | Crystals |
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| author | Hassan Zhairabany Hesam Khaksar Edgars Vanags Liutauras Marcinauskas |
| author_facet | Hassan Zhairabany Hesam Khaksar Edgars Vanags Liutauras Marcinauskas |
| author_sort | Hassan Zhairabany |
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| description | Two series of non-hydrogenated diamond-like carbon (DLC) films and molybdenum doped diamond-like carbon (Mo-DLC) films were grown on the silicon substrate using direct current magnetron sputtering. The influence of molybdenum doping (between 6.3 and 11.9 at.% of Mo), as well as the deposited temperature (between 185 and 235 °C) on the surface morphology, elemental composition, bonding microstructure, friction force, and nanohardness of the films, were characterized by atomic force microscopy (AFM), energy dispersive X-ray spectroscopy (EDX), Raman spectroscopy, and a nanoindenter. It was found that the increase in the metal dopant concentration led to a higher metallicity and graphitization of the DLC films. The surface roughness and sp<sup>3</sup>/sp<sup>2</sup> ratio were obtained as a function of the Mo concentration and formation temperature. The nanohardness of DLC films was improved by up to 75% with the addition of Mo. Meanwhile, the reduction in the deposition temperature decreased the nanohardness of the DLC films. The friction coefficient of the DLC films was slightly reduced with addition of the molybdenum. |
| format | Article |
| id | doaj-art-ed9c01507d244eb8a6a4e2bc7269e31f |
| institution | Kabale University |
| issn | 2073-4352 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | MDPI AG |
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| series | Crystals |
| spelling | doaj-art-ed9c01507d244eb8a6a4e2bc7269e31f2024-11-26T17:58:39ZengMDPI AGCrystals2073-43522024-11-01141196210.3390/cryst14110962Effect of Molybdenum Concentration and Deposition Temperature on the Structure and Tribological Properties of the Diamond-like Carbon FilmsHassan Zhairabany0Hesam Khaksar1Edgars Vanags2Liutauras Marcinauskas3Department of Physics, Kaunas University of Technology, Studentų Str. 50, 51368 Kaunas, LithuaniaMarian Smoluchowski Institute of Physics, Jagiellonian University, ul. Lojasiewicza 11, 30-348 Krakow, PolandInstitute of Solid State Physics, University of Latvia, Kengaraga Str. 8, LV1063 Riga, LatviaDepartment of Physics, Kaunas University of Technology, Studentų Str. 50, 51368 Kaunas, LithuaniaTwo series of non-hydrogenated diamond-like carbon (DLC) films and molybdenum doped diamond-like carbon (Mo-DLC) films were grown on the silicon substrate using direct current magnetron sputtering. The influence of molybdenum doping (between 6.3 and 11.9 at.% of Mo), as well as the deposited temperature (between 185 and 235 °C) on the surface morphology, elemental composition, bonding microstructure, friction force, and nanohardness of the films, were characterized by atomic force microscopy (AFM), energy dispersive X-ray spectroscopy (EDX), Raman spectroscopy, and a nanoindenter. It was found that the increase in the metal dopant concentration led to a higher metallicity and graphitization of the DLC films. The surface roughness and sp<sup>3</sup>/sp<sup>2</sup> ratio were obtained as a function of the Mo concentration and formation temperature. The nanohardness of DLC films was improved by up to 75% with the addition of Mo. Meanwhile, the reduction in the deposition temperature decreased the nanohardness of the DLC films. The friction coefficient of the DLC films was slightly reduced with addition of the molybdenum.https://www.mdpi.com/2073-4352/14/11/962Mo-doped diamond-like carbonmicrostructurefriction coefficientnano-hardnessdeposition temperature |
| spellingShingle | Hassan Zhairabany Hesam Khaksar Edgars Vanags Liutauras Marcinauskas Effect of Molybdenum Concentration and Deposition Temperature on the Structure and Tribological Properties of the Diamond-like Carbon Films Crystals Mo-doped diamond-like carbon microstructure friction coefficient nano-hardness deposition temperature |
| title | Effect of Molybdenum Concentration and Deposition Temperature on the Structure and Tribological Properties of the Diamond-like Carbon Films |
| title_full | Effect of Molybdenum Concentration and Deposition Temperature on the Structure and Tribological Properties of the Diamond-like Carbon Films |
| title_fullStr | Effect of Molybdenum Concentration and Deposition Temperature on the Structure and Tribological Properties of the Diamond-like Carbon Films |
| title_full_unstemmed | Effect of Molybdenum Concentration and Deposition Temperature on the Structure and Tribological Properties of the Diamond-like Carbon Films |
| title_short | Effect of Molybdenum Concentration and Deposition Temperature on the Structure and Tribological Properties of the Diamond-like Carbon Films |
| title_sort | effect of molybdenum concentration and deposition temperature on the structure and tribological properties of the diamond like carbon films |
| topic | Mo-doped diamond-like carbon microstructure friction coefficient nano-hardness deposition temperature |
| url | https://www.mdpi.com/2073-4352/14/11/962 |
| work_keys_str_mv | AT hassanzhairabany effectofmolybdenumconcentrationanddepositiontemperatureonthestructureandtribologicalpropertiesofthediamondlikecarbonfilms AT hesamkhaksar effectofmolybdenumconcentrationanddepositiontemperatureonthestructureandtribologicalpropertiesofthediamondlikecarbonfilms AT edgarsvanags effectofmolybdenumconcentrationanddepositiontemperatureonthestructureandtribologicalpropertiesofthediamondlikecarbonfilms AT liutaurasmarcinauskas effectofmolybdenumconcentrationanddepositiontemperatureonthestructureandtribologicalpropertiesofthediamondlikecarbonfilms |