This work reports the superlubricant behavior exhibited by nano-crystalline diamond (NCD) films grown on the titanium alloy substrates using 1.25 percent methane with argon gas, using the hot-filament CVD (HFCVD) technique. NCD films were deposited at the substrate temperatures of 650°C, 700°C and 750°C. Using Raman spectroscopy, X-Ray Diffraction (XRD), and Field Emission Scanning Electron Microscopy (FESEM), the structural properties and surface morphology of the deposited films were examined. A multi-functional tribometer was used to study the tribological properties of the NCD films, the minimum and maximum friction coefficient and wear rate (k) obtained were 0.002–0.057 and 3.73 × 10−17–1.19 × 10−14 m3/N-m, respectively. NCD films demonstrate potential as solid-state superlubricant coatings, offering solutions to various challenges in the aerospace and automotive industries.
ZhengZGuoZLiuW, et al.Low friction of superslippery and superlubricity: a review. Friction2023; 11: 1121–1137.
2.
HiranoMShinjoK. Atomistic locking and friction. Phys Rev B1990; 41: 11837–11851.
3.
MartinJM. Superlubricity of molybdenum disulfide. In: Superlubricity. 2007, pp.207–225.
4.
SharmaRPandeyAKSharmaN, et al.Diamond like carbon films as a protective surface on PMMA for biomedical applications. Surf Coat Technol2010; 205: 2495–2502.
5.
BarhaiPKSharmaRYadavAK, et al.Surface modification of PMMA with DLC using RF-PECVD. ECS Trans2009; 25: 829–836.
6.
PriyaDarshaniMSharmaR. Controlling the bandgap of graphene oxide via varying KMnO4. Opt Mater (Amst)2024; 147: 114634.
CaiWLuJXiongQ, et al.Tribological behavior of polycrystalline diamond based on photo-Fenton reaction. Diam Relat Mater2023; 140: 110430.
17.
AucielloOAslamDM. Review on advances in microcrystalline, nanocrystalline and ultrananocrystalline diamond films-based micro/nano-electromechanical systems technologies. J Mater Sci2021; 56: 7171–7230.
18.
JonesANAhmedWHassanIU, et al.Pulsed biased growth of nanocrystalline diamond by hot filament chemical vapour deposition. Surf Eng2004; 20: 181–185.
19.
SharmaRWoehrlNVrućinićM, et al.Effect of microwave power and C2 emission intensity on structural and surface properties of nanocrystalline diamond films. Thin Solid Films2011; 519: 7632–7637.
20.
FilikJHarveyJNAllanNL, et al.Raman Spectroscopy of nanocrystalline diamond: an ab initio approach. Phys Rev B2006; 74: 35423.
21.
GreenwoodJAWilliamsonJBPBowdenFP. Contact of nominally flat surfaces. Proc R Soc Lond A Math Phys Sci1997; 295: 300–319.
22.
FanQHGracioJPereiraE. Evaluation of residual stresses in chemical-vapor-deposited diamond films. J Appl Phys2000; 87: 2880–2884.
23.
RoyMGhodbaneSKochT, et al.Tribological investigation of nanocrystalline diamond films at low load under different tribosystems. Diam Relat Mater2011; 20: 573–583.
24.
QiWChenLLiH, et al.Solid–liquid composite lubrication (SLCL) based on diamond-like carbon (DLC) coatings and lubricating oils: properties and challenges. Coatings2024; 14: 1475.
25.
OkamotoRAkiyamaHNakaeR, et al.Tribo-Chemical reactions in DLC-zirconia sliding under ethanol gas environment. Langmuir2024; 40: 14953–14963.
26.
KanoMMartinJMDe Barros BouchetMI. Green superlubrication by hydrogen-free amorphous carbon with human friendly lubricants. Sens Mater2017; 29: 771−784.
27.
LiPJiLLiH, et al.Role of nanoparticles in achieving macroscale superlubricity of graphene/nano-SiO2 particle composites. Friction2022; 10: 1305–1316.
28.
ShiPLuYSunJ, et al.Towards a deeper understanding of superlubricity on graphite governed by interfacial adhesion. Carbon2022; 199: 479–485.
29.
LiHJuSJiL, et al.Superlubricity of molybdenum disulfide film. Surf Sci Technol2023; 1: 27.
