scholarly journals Chemical Vapor Deposition of N-Doped Graphene through Pre-Implantation of Nitrogen Ions for Long-Term Protection of Copper

Materials ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3751
Author(s):  
Luoqiao Han ◽  
Lei Dong ◽  
Haiyan Chen ◽  
Shuai Yang ◽  
Aiheng Yuan ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Galvanic Corrosion ◽  
Chemical Vapor ◽  
Pristine Graphene ◽  
Ambient Exposure ◽  
N Doping ◽  
Doped Graphene

Nitrogen-doped graphene (NG) was synthesized through the chemical vapor deposition (CVD) of graphene on Cu substrates, which were pre-implanted with N ions by the ion implantation method. The pre-implanted N ions in the Cu substrate could dope graphene by the substitution of C atoms during the CVD growth of graphene, forming NG. Based on this, NG’s long-term protection properties for Cu were evaluated by ambient exposure for a corrosion test. The results showed that NG can obviously reduce the natural oxidation of Cu in the long-term exposure compared with the case of pristine graphene (PG) coated on Cu. Moreover, with the increase in pre-implanted N dose, the formed NG’s long-term protection for Cu improved. This indicates that the modification of graphene by N doping is an effective way to improve the corrosion resistance of the PG coating owing to the reduction in its conductivity, which would inhibit galvanic corrosion by cutting off electron transport across the interface in their long-term protection. These findings provide insight into corrosion mechanisms of the graphene coating and correlate with its conductive nature based on heteroatoms doping, which is a potential route for improving the corrosion resistance of graphene as an effective barrier coating for metals.

scholarly journals Nitrogen-doped graphene films from chemical vapor deposition of pyridine: influence of process parameters on the electrical and optical properties

2015 ◽  
Vol 6 ◽  
pp. 2028-2038 ◽  
Author(s):  
Andrea Capasso ◽  
Theodoros Dikonimos ◽  
Francesca Sarto ◽  
Alessio Tamburrano ◽  
Giovanni De Bellis ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Gas Flow ◽  
Chemical Vapor ◽  
Process Conditions ◽  
Pristine Graphene ◽  
Influence Of Process Parameters ◽  
Graphene Films ◽  
Doped Graphene

Graphene films were produced by chemical vapor deposition (CVD) of pyridine on copper substrates. Pyridine-CVD is expected to lead to doped graphene by the insertion of nitrogen atoms in the growing sp2 carbon lattice, possibly improving the properties of graphene as a transparent conductive film. We here report on the influence that the CVD parameters (i.e., temperature and gas flow) have on the morphology, transmittance, and electrical conductivity of the graphene films grown with pyridine. A temperature range between 930 and 1070 °C was explored and the results were compared to those of pristine graphene grown by ethanol-CVD under the same process conditions. The films were characterized by atomic force microscopy, Raman and X-ray photoemission spectroscopy. The optical transmittance and electrical conductivity of the films were measured to evaluate their performance as transparent conductive electrodes. Graphene films grown by pyridine reached an electrical conductivity of 14.3 × 105 S/m. Such a high conductivity seems to be associated with the electronic doping induced by substitutional nitrogen atoms. In particular, at 930 °C the nitrogen/carbon ratio of pyridine-grown graphene reaches 3%, and its electrical conductivity is 40% higher than that of pristine graphene grown from ethanol-CVD.

N-doping of graphene: toward long-term corrosion protection of Cu

2018 ◽  
Vol 6 (47) ◽  
pp. 24136-24148 ◽  
Author(s):  
Siming Ren ◽  
Mingjun Cui ◽  
Wensheng Li ◽  
Jibin Pu ◽  
Qunji Xue ◽  
...  
Keyword(s):  
Corrosion Protection ◽  
Pristine Graphene ◽  
Promising Candidate ◽  
N Doping ◽  
Doped Graphene

N-doped graphene could be a promising candidate for long-term corrosion protection of Cu because of its low conductivity compared to pristine graphene.

Low Temperature Critical Growth of High Quality Nitrogen Doped Graphene on Dielectrics by Plasma-Enhanced Chemical Vapor Deposition

ACS Nano ◽  
2015 ◽  
Vol 9 (1) ◽  
pp. 164-171 ◽  
Author(s):  
Dacheng Wei ◽  
Lan Peng ◽  
Menglin Li ◽  
Hongying Mao ◽  
Tianchao Niu ◽  
...  
Keyword(s):  
Chemical Vapor Deposition ◽  
Low Temperature ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Critical Growth ◽  
High Quality ◽  
Nitrogen Doped ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene

Synthesis by plasma-enhanced chemical-vapor deposition and characterization of siliconlike films with hydrophobic functionalities for improved long-term geometric stability of fiber-reinforced polymers

2008 ◽  
Vol 23 (4) ◽  
pp. 1042-1050 ◽  
Author(s):  
A. Cremona ◽  
E. Vassallo ◽  
A. Merlo ◽  
A. Srikantha Phani ◽  
L. Laguardia
Keyword(s):  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
High Strength ◽  
Scratch Resistance ◽  
Fiber Reinforced Polymers ◽  
Fiber Reinforced ◽  
Water Contact ◽  
Fiber Failure

Amorphous siliconlike films with hydrophobic functionalities have been deposited by plasma-enhanced chemical-vapor deposition on carbon-fiber-reinforced polymer (CFRP) unidirectional laminates used for micromechanical applications where high strength-to-weight and high stiffness-to-weight ratios are required. To improve long-term geometrical stability in ultrahigh-precision machine structures, hydrophobic CFRP materials are desirable. Three layers have been grown with different plasma-process parameters from a mixture of hexamethyldisiloxane, O2, and Ar. Chemical composition, water contact angle, surface energy, morphology, and tribological properties have been evaluated to choose the one that best fulfills hydrophobicity, wear, and scratch resistance. Wear tests have also been carried out on CFRP laminates coated with a polyurethane layer to compare the wear performance of the above specimens with that of a conventional hydrophobic coating. Scanning electron microscope images show a very good adhesion of the films to the composite substrate because the failure of the film and of the substrate (such as fiber failure) take place simultaneously.

In situnitrogen-doped graphene grown from polydimethylsiloxane by plasma enhanced chemical vapor deposition

Nanoscale ◽  
2013 ◽  
Vol 5 (2) ◽  
pp. 600-605 ◽  
Author(s):  
Chundong Wang ◽  
Yungang Zhou ◽  
Lifang He ◽  
Tsz-Wai Ng ◽  
Guo Hong ◽  
...  
Keyword(s):  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Doped Graphene

scholarly journals Chemical Vapor Deposition of N-Doped Graphene and Carbon Films: The Role of Precursors and Gas Phase

ACS Nano ◽  
2014 ◽  
Vol 8 (4) ◽  
pp. 3337-3346 ◽  
Author(s):  
Yoshikazu Ito ◽  
Christos Christodoulou ◽  
Marco Vittorio Nardi ◽  
Norbert Koch ◽  
Hermann Sachdev ◽  
...  
Keyword(s):  
Chemical Vapor Deposition ◽  
Gas Phase ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Carbon Films ◽  
Doped Graphene

Corrosion resistance and chemical stability of super-hydrophobic film deposited on magnesium alloy AZ31 by microwave plasma-enhanced chemical vapor deposition

2010 ◽  
Vol 55 (23) ◽  
pp. 7094-7101 ◽  
Author(s):  
Takahiro Ishizaki ◽  
Junko Hieda ◽  
Nagahiro Saito ◽  
Naobumi Saito ◽  
Osamu Takai
Keyword(s):  
Corrosion Resistance ◽  
Chemical Vapor Deposition ◽  
Magnesium Alloy ◽  
Chemical Stability ◽  
Vapor Deposition ◽  
Microwave Plasma ◽  
Chemical Vapor ◽  
Alloy Az31 ◽  
Magnesium Alloy Az31

Grain structures of nitrogen-doped graphene synthesized by solid source-based chemical vapor deposition

Carbon ◽  
2016 ◽  
Vol 96 ◽  
pp. 448-453 ◽  
Author(s):  
Sachin M. Shinde ◽  
Emi Kano ◽  
Golap Kalita ◽  
Masaki Takeguchi ◽  
Ayako Hashimoto ◽  
...  
Keyword(s):  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Nitrogen Doped ◽  
Grain Structures ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene
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