Abstract
The mechanochemical reactions of adsorbed molecules at sliding interfaces were studied for α-pinene (C10H16), pinane (C10H18), and n-decane (C10H22) on a stainless steel substrate surface. During vapor phase lubrication, molecules adsorbed at the sliding interface could be activated by mechanical shear. Under the equilibrium adsorption condition of these molecules, the friction coefficient of sliding steel surfaces was about 0.2 and a polymeric film was tribochemically produced. The synthesis yield of α-pinene tribo-polymers was about twice as much as pinane tribo-polymers. In contrast to these strained bicyclic hydrocarbons, n-decane showed much weaker activity for tribo-polymerization at the same mechanical shear condition. These results suggested that the mechanical shear at tribological interfaces could induce the opening of the strained ring structure of α-pinene and pinane, which leads to polymerization of adsorbed molecules at the sliding track. On a stainless steel surface, such polymerization reactions of adsorbed molecules do not occur under typical surface reaction conditions. The mechanical properties and boundary lubrication efficiency of the produced tribo-polymer films are discussed.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 352-359 |
| Number of pages | 8 |
| Journal | Surface Science |
| Volume | 648 |
| DOIs | |
| State | Published - Jun 1 2016 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Materials Chemistry
Cite this
}
Tribochemical synthesis of nano-lubricant films from adsorbed molecules at sliding solid interface : Tribo-polymers from α-pinene, pinane, and n-decane. / He, Xin; Barthel, Anthony J.; Kim, Seong.
In: Surface Science, Vol. 648, 01.06.2016, p. 352-359.Research output: Contribution to journal › Article
TY - JOUR
T1 - Tribochemical synthesis of nano-lubricant films from adsorbed molecules at sliding solid interface
T2 - Tribo-polymers from α-pinene, pinane, and n-decane
AU - He, Xin
AU - Barthel, Anthony J.
AU - Kim, Seong
PY - 2016/6/1
Y1 - 2016/6/1
N2 - The mechanochemical reactions of adsorbed molecules at sliding interfaces were studied for α-pinene (C10H16), pinane (C10H18), and n-decane (C10H22) on a stainless steel substrate surface. During vapor phase lubrication, molecules adsorbed at the sliding interface could be activated by mechanical shear. Under the equilibrium adsorption condition of these molecules, the friction coefficient of sliding steel surfaces was about 0.2 and a polymeric film was tribochemically produced. The synthesis yield of α-pinene tribo-polymers was about twice as much as pinane tribo-polymers. In contrast to these strained bicyclic hydrocarbons, n-decane showed much weaker activity for tribo-polymerization at the same mechanical shear condition. These results suggested that the mechanical shear at tribological interfaces could induce the opening of the strained ring structure of α-pinene and pinane, which leads to polymerization of adsorbed molecules at the sliding track. On a stainless steel surface, such polymerization reactions of adsorbed molecules do not occur under typical surface reaction conditions. The mechanical properties and boundary lubrication efficiency of the produced tribo-polymer films are discussed.
AB - The mechanochemical reactions of adsorbed molecules at sliding interfaces were studied for α-pinene (C10H16), pinane (C10H18), and n-decane (C10H22) on a stainless steel substrate surface. During vapor phase lubrication, molecules adsorbed at the sliding interface could be activated by mechanical shear. Under the equilibrium adsorption condition of these molecules, the friction coefficient of sliding steel surfaces was about 0.2 and a polymeric film was tribochemically produced. The synthesis yield of α-pinene tribo-polymers was about twice as much as pinane tribo-polymers. In contrast to these strained bicyclic hydrocarbons, n-decane showed much weaker activity for tribo-polymerization at the same mechanical shear condition. These results suggested that the mechanical shear at tribological interfaces could induce the opening of the strained ring structure of α-pinene and pinane, which leads to polymerization of adsorbed molecules at the sliding track. On a stainless steel surface, such polymerization reactions of adsorbed molecules do not occur under typical surface reaction conditions. The mechanical properties and boundary lubrication efficiency of the produced tribo-polymer films are discussed.
UR - http://www.scopus.com/inward/record.url?scp=84956864292&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84956864292&partnerID=8YFLogxK
U2 - 10.1016/j.susc.2016.01.005
DO - 10.1016/j.susc.2016.01.005
M3 - Article
AN - SCOPUS:84956864292
VL - 648
SP - 352
EP - 359
JO - Surface Science
JF - Surface Science
SN - 0039-6028
ER -