抄録
Different from the conventional physical modifications, significant reduction of wear and friction in severe dry conditions can be accommodated to titanium nitride (TiN) coating via the chlorine ion implantation. High friction coefficient with μ=0.8-1.2 for the as-deposited TiN is reduced to be less than 0.2 at room temperature. Titanium mono-oxide (TiO) and oxides with oxygen deficiency or Magnèli phase with TinO2n-1, were formed inside the wear track of Cl-implanted TiN coating. Due to the shear deformability of titanium mono-oxide and crystallographic shearing planes in this Magnèli phase, vicinity of the Cl-implanted TiN surface can be elasto-plastically deformed, resulting in reduction of shear stress, wear and friction. Micro-X-ray photoelectron spectroscopy (XPS) measurement as well as high-resolution transparent electron microscopy (HRTEM), were an effective tool to describe local surface reaction taking place inside and outside of the wear track. Oxidation process of TiN during wear is drastically changed at the presence of Cl-atoms on the surface. Cl-atoms diffuse from the inside of TiN to the surface to accelerate the formation of titanium oxides, and to escape out of the system together with oxide debris. Both wear volume and friction coefficient, are preserved to be as low as or lower than diamond like carbon (DLC) coatings. This preferable tribological property comes from self-lubrication mechanism of the Cl-implanted TiN due to significant change of surface reaction by the effect of Cl-atoms.
| 元の言語 | English |
|---|---|
| ページ（範囲） | 668-679 |
| ページ数 | 12 |
| ジャーナル | Wear |
| 巻 | 254 |
| 発行部数 | 7-8 |
| DOI | |
| 出版物ステータス | Published - 2003 4 |
| 外部発表 | Yes |
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ASJC Scopus subject areas
- Engineering(all)
- Mechanical Engineering
- Surfaces, Coatings and Films
これを引用
Self-lubrication mechanism of chlorine implanted TiN coatings. / Akhadejdamrong, Thananan; Aizawa, Tatsuhiko; Yoshitake, Michiko; Mitsuo, Atsushi; Yamamoto, Takahisa; Ikuhara, Yuichi.
：: Wear, 巻 254, 番号 7-8, 04.2003, p. 668-679.研究成果: Article
}
TY - JOUR
T1 - Self-lubrication mechanism of chlorine implanted TiN coatings
AU - Akhadejdamrong, Thananan
AU - Aizawa, Tatsuhiko
AU - Yoshitake, Michiko
AU - Mitsuo, Atsushi
AU - Yamamoto, Takahisa
AU - Ikuhara, Yuichi
PY - 2003/4
Y1 - 2003/4
N2 - Different from the conventional physical modifications, significant reduction of wear and friction in severe dry conditions can be accommodated to titanium nitride (TiN) coating via the chlorine ion implantation. High friction coefficient with μ=0.8-1.2 for the as-deposited TiN is reduced to be less than 0.2 at room temperature. Titanium mono-oxide (TiO) and oxides with oxygen deficiency or Magnèli phase with TinO2n-1, were formed inside the wear track of Cl-implanted TiN coating. Due to the shear deformability of titanium mono-oxide and crystallographic shearing planes in this Magnèli phase, vicinity of the Cl-implanted TiN surface can be elasto-plastically deformed, resulting in reduction of shear stress, wear and friction. Micro-X-ray photoelectron spectroscopy (XPS) measurement as well as high-resolution transparent electron microscopy (HRTEM), were an effective tool to describe local surface reaction taking place inside and outside of the wear track. Oxidation process of TiN during wear is drastically changed at the presence of Cl-atoms on the surface. Cl-atoms diffuse from the inside of TiN to the surface to accelerate the formation of titanium oxides, and to escape out of the system together with oxide debris. Both wear volume and friction coefficient, are preserved to be as low as or lower than diamond like carbon (DLC) coatings. This preferable tribological property comes from self-lubrication mechanism of the Cl-implanted TiN due to significant change of surface reaction by the effect of Cl-atoms.
AB - Different from the conventional physical modifications, significant reduction of wear and friction in severe dry conditions can be accommodated to titanium nitride (TiN) coating via the chlorine ion implantation. High friction coefficient with μ=0.8-1.2 for the as-deposited TiN is reduced to be less than 0.2 at room temperature. Titanium mono-oxide (TiO) and oxides with oxygen deficiency or Magnèli phase with TinO2n-1, were formed inside the wear track of Cl-implanted TiN coating. Due to the shear deformability of titanium mono-oxide and crystallographic shearing planes in this Magnèli phase, vicinity of the Cl-implanted TiN surface can be elasto-plastically deformed, resulting in reduction of shear stress, wear and friction. Micro-X-ray photoelectron spectroscopy (XPS) measurement as well as high-resolution transparent electron microscopy (HRTEM), were an effective tool to describe local surface reaction taking place inside and outside of the wear track. Oxidation process of TiN during wear is drastically changed at the presence of Cl-atoms on the surface. Cl-atoms diffuse from the inside of TiN to the surface to accelerate the formation of titanium oxides, and to escape out of the system together with oxide debris. Both wear volume and friction coefficient, are preserved to be as low as or lower than diamond like carbon (DLC) coatings. This preferable tribological property comes from self-lubrication mechanism of the Cl-implanted TiN due to significant change of surface reaction by the effect of Cl-atoms.
KW - Chemical modification
KW - Chlorine
KW - Ion implantation
KW - Self-lubrication
KW - Shear deformation
UR - http://www.scopus.com/inward/record.url?scp=0038127175&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0038127175&partnerID=8YFLogxK
U2 - 10.1016/S0043-1648(03)00249-7
DO - 10.1016/S0043-1648(03)00249-7
M3 - Article
AN - SCOPUS:0038127175
VL - 254
SP - 668
EP - 679
JO - Wear
JF - Wear
SN - 0043-1648
IS - 7-8
ER -