Effect of Substrate Bias Voltage on the Mechanical and Tribological Properties of Low Concentration Ti-Containing Diamond Like Carbon Films

2012 ◽  
Vol 182-183 ◽  
pp. 232-236 ◽  
Author(s):  
Jin Feng Cui ◽  
Li Qiang ◽  
Bin Zhang ◽  
Xiao Ling ◽  
Jun Yan Zhang
Keyword(s):  
Bias Voltage ◽  
Carbon Films ◽  
Diamond Like Carbon ◽  
Substrate Bias ◽  
Low Friction ◽  
Substrate Bias Voltage ◽  
Mechanical And Tribological Properties ◽  
Si Substrates ◽  
Argon Mixture ◽  
Hardness Values

Ti containing hydrogenated diamond like carbon films (Ti-DLC) was deposited on Si substrates at room temperature by magnetron sputtering Ti-twin target in methane and argon mixture atmosphere via changing the substrate bias voltage. The Ti atomic concentration in the film is less than 0.57% and exists mainly in the form of metallic titanium rather than TiC, confirmed by XPS analysis. The internal compressive stress of the film decreases monotonically with the substrate bias voltage increase. However, the hardness values of the film keep at level (12 GPa) without almost any obvious change with the increase of the substrate bias voltage. Furthermore, Ti-containing DLC film prepared at -1600 V substrate bias voltage shows an extremely low wear rate (~10-9mm3/Nm) and low friction coefficient (0.09).

scholarly journals Effects of Substrate Bias Voltage on Structure of Diamond-Like Carbon Films on AISI 316L Stainless Steel: A Molecular Dynamics Simulation Study

Materials ◽  
2021 ◽  
Vol 14 (17) ◽  
pp. 4925
Author(s):  
Ngoc-Tu Do ◽  
Van-Hai Dinh ◽  
Le Van Lich ◽  
Hong-Hue Dang-Thi ◽  
Trong-Giang Nguyen
Keyword(s):  
Molecular Dynamics ◽  
Stainless Steel ◽  
Bias Voltage ◽  
Carbon Film ◽  
Carbon Films ◽  
Dynamics Simulation ◽  
Diamond Like Carbon ◽  
Substrate Bias ◽  
Aisi 316L ◽  
Substrate Bias Voltage

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 sp3 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, sp3 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 sp3 fraction was about 48.5% at 120 V bias voltage. The dependence of sp3 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.

Tuning structural, electrical and mechanical properties of diamond-like carbon films by substrate bias voltage

2021 ◽  
pp. 102501
Author(s):  
Wilfred M. Mbiombi ◽  
Daniel Wamwangi ◽  
Bhekumusa A. Mathe ◽  
R.M. Erasmus ◽  
Arthur G. Every ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Bias Voltage ◽  
Carbon Films ◽  
Diamond Like Carbon ◽  
Substrate Bias ◽  
Substrate Bias Voltage

scholarly journals Robust low friction performance of graphene sheets embedded carbon films coated orthodontic stainless steel archwires

Friction ◽  
2021 ◽  
Author(s):  
Zonglin Pan ◽  
Qinzhao Zhou ◽  
Pengfei Wang ◽  
Dongfeng Diao
Keyword(s):  
Stainless Steel ◽  
Friction Coefficient ◽  
Orthodontic Treatment ◽  
Artificial Saliva ◽  
Carbon Film ◽  
Carbon Films ◽  
Graphene Sheets ◽  
Substrate Bias ◽  
Low Friction ◽  
Substrate Bias Voltage

AbstractReducing the friction force between the commercial archwire and bracket during the orthodontic treatment in general dental practice has attracted worldwide interest. An investigation on the friction and wear behaviors of the uncoated and carbon film coated stainless steel archwires running against stainless steel brackets was systematically conducted. The carbon films were prepared at substrate bias voltages from +5 to +50 V using an electron cyclotron resonance plasma sputtering system. With increasing substrate bias voltage, local microstructures of the carbon films evolved from amorphous carbon to graphene nanocrystallites. Both static and stable friction coefficients of the archwire-bracket contacts sliding in dry and wet (artificial saliva) conditions decreased with the deposition of carbon films on the archwires. Low friction coefficient of 0.12 was achieved in artificial saliva environment for the graphene sheets embedded carbon (GSEC) film coated archwire. Deterioration of the friction behavior of the GSEC film coated archwire occurred after immersion of the archwire in artificial saliva solution for different periods before friction test. However, moderate friction coefficient of less than 0.30 sustained after 30 days immersion periods. The low friction mechanism is clarified to be the formation of salivary adsorbed layer and graphene sheets containing tribofilm on the contact interfaces. The robust low friction and low wear performances of the GSEC film coated archwires make them good candidates for clinical orthodontic treatment applications.

scholarly journals Tribological properties of boron carbonitride coatings sliding against different wood (acerbic, beech, and lauan) balls

2019 ◽  
Vol 28 ◽  
pp. 096369351987573 ◽  
Author(s):  
Zhiwei Wu ◽  
Sihao Li ◽  
Zhaojun Xu ◽  
Qianzhi Wang ◽  
Fei Zhou
Keyword(s):  
Bias Voltage ◽  
Tribological Properties ◽  
Photoelectron Spectroscopy ◽  
Rf Magnetron Sputtering ◽  
Substrate Bias ◽  
Boron Carbonitride ◽  
Friction Behavior ◽  
Substrate Bias Voltage ◽  
Mechanical And Tribological Properties ◽  
C And N

Boron carbonitride (BCN) coatings were prepared using radio frequency (RF) magnetron sputtering via adjusting substrate bias voltage from −50 V to −200 V. The mechanical and tribological properties of the coatings were investigated. The coexistence of B–N, B–C, and N–C bonds was detected in coatings according to X-ray photoelectron spectroscopy analysis, indicating the formation of ternary BCN hybridization. The hardness of BCN coatings increased from 14.4 GPa to 24.3 GPa with an increase of substrate bias voltage, while their adhesion strength on substrate decreased. The friction behavior of BCN coatings sliding against different wood (acerbic, beech, and lauan) balls was examined using a ball-on-disk tribometer. The average friction coefficient fluctuated in a range of 0.74–1.02. The wear track of BCN coating sliding against hardwood (acerbic) presented obvious scratches, which were not noted as sliding against other softwood balls in comparison.

Effect of substrate bias voltage on the properties of diamond-like carbon thin films deposited by microwave surface wave plasma CVD

2008 ◽  
Vol 17 (4-5) ◽  
pp. 696-699 ◽  
Author(s):  
Sudip Adhikari ◽  
Dilip Chandra Ghimire ◽  
Hare Ram Aryal ◽  
Golap Kalita ◽  
Masayoshi Umeno
Keyword(s):  
Thin Films ◽  
Surface Wave ◽  
Bias Voltage ◽  
Diamond Like Carbon ◽  
Substrate Bias ◽  
Plasma Cvd ◽  
Substrate Bias Voltage ◽  
Carbon Thin Films
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