Effects of Substrate Bias Voltage on Structure of Diamond-Like Carbon Films on AISI 316L Stainless Steel: A Molecular Dynamics Simulation Study
With the recent significant advances in micro- and nanoscale fabrication techniques, deposition of diamond-like carbon films on stainless steel substrates has been experimentally achieved. However, the underlying mechanism for the formation of film microstructures has remained elusive. In this study...
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MDPI AG
2021-08-01
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| Online Access: | https://www.mdpi.com/1996-1944/14/17/4925 |
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| author | Ngoc-Tu Do Van-Hai Dinh Le Van Lich Hong-Hue Dang-Thi Trong-Giang Nguyen |
| author_facet | Ngoc-Tu Do Van-Hai Dinh Le Van Lich Hong-Hue Dang-Thi Trong-Giang Nguyen |
| author_sort | Ngoc-Tu Do |
| collection | DOAJ |
| description | With the recent significant advances in micro- and nanoscale fabrication techniques, deposition of diamond-like carbon films on stainless steel substrates has been experimentally achieved. However, the underlying mechanism for the formation of film microstructures has remained elusive. In this study, the growth processes of diamond-like carbon films on AISI 316L substrate are studied via the molecular dynamics method. Effects of substrate bias voltage on the structure properties and sp<sup>3</sup> hybridization ratio are investigated. A diamond-like carbon film with a compact structure and smooth surface is obtained at 120 V bias voltage. Looser structures with high surface roughness are observed in films deposited under bias voltages of 0 V or 300 V. In addition, sp<sup>3</sup> fraction increases with increasing substrate bias voltage from 0 V to 120 V, while an opposite trend is obtained when the bias voltage is further increased from 120 V to 300 V. The highest magnitude of sp<sup>3</sup> fraction was about 48.5% at 120 V bias voltage. The dependence of sp<sup>3</sup> fraction in carbon films on the substrate bias voltage achieves a high consistency within the experiment results. The mechanism for the dependence of diamond-like carbon structures on the substrate bias voltage is discussed as well. |
| first_indexed | 2024-03-10T08:07:27Z |
| format | Article |
| id | doaj.art-015cffa532ae4d09905bc460fe2cb44b |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T08:07:27Z |
| publishDate | 2021-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-015cffa532ae4d09905bc460fe2cb44b2023-11-22T10:53:42ZengMDPI AGMaterials1996-19442021-08-011417492510.3390/ma14174925Effects of Substrate Bias Voltage on Structure of Diamond-Like Carbon Films on AISI 316L Stainless Steel: A Molecular Dynamics Simulation StudyNgoc-Tu Do0Van-Hai Dinh1Le Van Lich2Hong-Hue Dang-Thi3Trong-Giang Nguyen4Department of Industrial Equipment & Tools, Faculty of Mechanical Engineering, Hanoi University of Industry, Hanoi 100000, VietnamSchool of Materials Science and Engineering, Hanoi University of Science and Technology, Hanoi 100000, VietnamSchool of Materials Science and Engineering, Hanoi University of Science and Technology, Hanoi 100000, VietnamSchool of Materials Science and Engineering, Hanoi University of Science and Technology, Hanoi 100000, VietnamSchool of Materials Science and Engineering, Hanoi University of Science and Technology, Hanoi 100000, VietnamWith the recent significant advances in micro- and nanoscale fabrication techniques, deposition of diamond-like carbon films on stainless steel substrates has been experimentally achieved. However, the underlying mechanism for the formation of film microstructures has remained elusive. In this study, the growth processes of diamond-like carbon films on AISI 316L substrate are studied via the molecular dynamics method. Effects of substrate bias voltage on the structure properties and sp<sup>3</sup> hybridization ratio are investigated. A diamond-like carbon film with a compact structure and smooth surface is obtained at 120 V bias voltage. Looser structures with high surface roughness are observed in films deposited under bias voltages of 0 V or 300 V. In addition, sp<sup>3</sup> fraction increases with increasing substrate bias voltage from 0 V to 120 V, while an opposite trend is obtained when the bias voltage is further increased from 120 V to 300 V. The highest magnitude of sp<sup>3</sup> fraction was about 48.5% at 120 V bias voltage. The dependence of sp<sup>3</sup> fraction in carbon films on the substrate bias voltage achieves a high consistency within the experiment results. The mechanism for the dependence of diamond-like carbon structures on the substrate bias voltage is discussed as well.https://www.mdpi.com/1996-1944/14/17/4925diamond-like carbonsubstrate bias voltageAISI 316L stainless steeldeposition processmolecular dynamics simulation |
| spellingShingle | Ngoc-Tu Do Van-Hai Dinh Le Van Lich Hong-Hue Dang-Thi Trong-Giang Nguyen Effects of Substrate Bias Voltage on Structure of Diamond-Like Carbon Films on AISI 316L Stainless Steel: A Molecular Dynamics Simulation Study Materials diamond-like carbon substrate bias voltage AISI 316L stainless steel deposition process molecular dynamics simulation |
| title | Effects of Substrate Bias Voltage on Structure of Diamond-Like Carbon Films on AISI 316L Stainless Steel: A Molecular Dynamics Simulation Study |
| title_full | Effects of Substrate Bias Voltage on Structure of Diamond-Like Carbon Films on AISI 316L Stainless Steel: A Molecular Dynamics Simulation Study |
| title_fullStr | Effects of Substrate Bias Voltage on Structure of Diamond-Like Carbon Films on AISI 316L Stainless Steel: A Molecular Dynamics Simulation Study |
| title_full_unstemmed | Effects of Substrate Bias Voltage on Structure of Diamond-Like Carbon Films on AISI 316L Stainless Steel: A Molecular Dynamics Simulation Study |
| title_short | Effects of Substrate Bias Voltage on Structure of Diamond-Like Carbon Films on AISI 316L Stainless Steel: A Molecular Dynamics Simulation Study |
| title_sort | effects of substrate bias voltage on structure of diamond like carbon films on aisi 316l stainless steel a molecular dynamics simulation study |
| topic | diamond-like carbon substrate bias voltage AISI 316L stainless steel deposition process molecular dynamics simulation |
| url | https://www.mdpi.com/1996-1944/14/17/4925 |
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