The effect of oxygen on the tribology of (PEI/GO)15 multilayer solid lubricant coatings on steel substrates

研究成果: ジャーナルへの寄稿記事

抄録

Multilayers of polyethyleneimine and graphene oxide, (PEI/GO)15, were coated onto steel substrates via electrostatic layer-by-layer (LbL) deposition, and their tribological properties were investigated as solid lubricants. The coefficient of friction (COF) and specific wear rate (SWR) were measured against a poly(methyl methacrylate) (PMMA) counterface ball, in various gas environments with different oxygen concentrations. The COF and SWR both significantly decreased with decreasing oxygen content. Detailed surface characterization of the contact area of the counterface ball revealed that continuous transfer films were formed in oxygen-free environments, but not in oxygen-rich environments. This is attributed to an increased proportion of sp3 bonding in the wear debris in the presence of oxygen (as confirmed by Raman spectroscopy), as well as possible suppression of wear debris adhesion on the counterface ball due to oxygen adsorption on the surface.

元の言語英語
記事番号102920
ジャーナルWear
432-433
DOI
出版物ステータス出版済み - 8 15 2019

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solid lubricants
Polyethyleneimine
Solid lubricants
tribology
Graphite
Tribology
Steel
Oxides
Graphene
graphene
Multilayers
steels
Oxygen
coatings
Coatings
oxides
oxygen
Substrates
Wear of materials
balls

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

これを引用

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title = "The effect of oxygen on the tribology of (PEI/GO)15 multilayer solid lubricant coatings on steel substrates",
abstract = "Multilayers of polyethyleneimine and graphene oxide, (PEI/GO)15, were coated onto steel substrates via electrostatic layer-by-layer (LbL) deposition, and their tribological properties were investigated as solid lubricants. The coefficient of friction (COF) and specific wear rate (SWR) were measured against a poly(methyl methacrylate) (PMMA) counterface ball, in various gas environments with different oxygen concentrations. The COF and SWR both significantly decreased with decreasing oxygen content. Detailed surface characterization of the contact area of the counterface ball revealed that continuous transfer films were formed in oxygen-free environments, but not in oxygen-rich environments. This is attributed to an increased proportion of sp3 bonding in the wear debris in the presence of oxygen (as confirmed by Raman spectroscopy), as well as possible suppression of wear debris adhesion on the counterface ball due to oxygen adsorption on the surface.",
author = "Prabakaran Saravanan and Roman Selyanchyn and Hiroyoshi Tanaka and Shigenori Fujikawa and Lyth, {Stephen Matthew} and Joichi Sugimura",
year = "2019",
month = "8",
day = "15",
doi = "10.1016/j.wear.2019.05.035",
language = "English",
volume = "432-433",
journal = "Wear",
issn = "0043-1648",
publisher = "Elsevier BV",

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T1 - The effect of oxygen on the tribology of (PEI/GO)15 multilayer solid lubricant coatings on steel substrates

AU - Saravanan, Prabakaran

AU - Selyanchyn, Roman

AU - Tanaka, Hiroyoshi

AU - Fujikawa, Shigenori

AU - Lyth, Stephen Matthew

AU - Sugimura, Joichi

PY - 2019/8/15

Y1 - 2019/8/15

N2 - Multilayers of polyethyleneimine and graphene oxide, (PEI/GO)15, were coated onto steel substrates via electrostatic layer-by-layer (LbL) deposition, and their tribological properties were investigated as solid lubricants. The coefficient of friction (COF) and specific wear rate (SWR) were measured against a poly(methyl methacrylate) (PMMA) counterface ball, in various gas environments with different oxygen concentrations. The COF and SWR both significantly decreased with decreasing oxygen content. Detailed surface characterization of the contact area of the counterface ball revealed that continuous transfer films were formed in oxygen-free environments, but not in oxygen-rich environments. This is attributed to an increased proportion of sp3 bonding in the wear debris in the presence of oxygen (as confirmed by Raman spectroscopy), as well as possible suppression of wear debris adhesion on the counterface ball due to oxygen adsorption on the surface.

AB - Multilayers of polyethyleneimine and graphene oxide, (PEI/GO)15, were coated onto steel substrates via electrostatic layer-by-layer (LbL) deposition, and their tribological properties were investigated as solid lubricants. The coefficient of friction (COF) and specific wear rate (SWR) were measured against a poly(methyl methacrylate) (PMMA) counterface ball, in various gas environments with different oxygen concentrations. The COF and SWR both significantly decreased with decreasing oxygen content. Detailed surface characterization of the contact area of the counterface ball revealed that continuous transfer films were formed in oxygen-free environments, but not in oxygen-rich environments. This is attributed to an increased proportion of sp3 bonding in the wear debris in the presence of oxygen (as confirmed by Raman spectroscopy), as well as possible suppression of wear debris adhesion on the counterface ball due to oxygen adsorption on the surface.

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