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Effects of nano-TiO2 additive in oil-in-water lubricant on contact angle and antiscratch behavior

Journal Article


Abstract


  • Contact angle and scratch tests have been conducted to investigate the effects of nano-TiO2 additive in oil-in-water (O/W) lubricant. The results show that the contact angle between high-speed steel with oxide scale and 1% (oil concentration) O/W lubricant decreases first and then increases as the concentration of nano-TiO2 particle in the O/W lubricant increases. The smallest contact angle is obtained after an addition of 4% nano-TiO2 additive to the O/W lubricant. This is because the nano-TiO2 can enhance the surface excess of the oil when the nano-TiO2 particles distribute throughout the surface of the oil droplets, and after saturation they can distribute throughout the water and also improve the surface excess of the water in the O/W lubricant. The scratch and hot rolling tests show that the nano-TiO2 particles in the O/W lubricant can also reduce friction, improve scratch resistance, and reduce rolling force. A method for measuring the adhesion force of the oxide scale is proposed and the effect of nanoparticles is discussed. It is demonstrated that the effect of self-lubrication of nanoparticles in the O/W lubricant plays a more significant role in the tribological behavior during hot rolling than wettability.

Authors


  •   Xia, Wenzhen (external author)
  •   Zhao, Jingwei
  •   Hui Wu
  •   Zhao, Xianming (external author)
  •   Zhang, Xiaoming (external author)
  •   Xu, Jianzhong (external author)
  •   Hee, Ay Ching (external author)
  •   Jiang, Zhengyi

Publication Date


  • 2017

Citation


  • Xia, W., Zhao, J., Wu, H., Zhao, X., Zhang, X., Xu, J., Hee, A. & Jiang, Z. (2017). Effects of nano-TiO2 additive in oil-in-water lubricant on contact angle and antiscratch behavior. Tribology Transactions, 60 (2), 362-372.

Scopus Eid


  • 2-s2.0-84981243988

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/6070

Has Global Citation Frequency


Number Of Pages


  • 10

Start Page


  • 362

End Page


  • 372

Volume


  • 60

Issue


  • 2

Place Of Publication


  • United States

Abstract


  • Contact angle and scratch tests have been conducted to investigate the effects of nano-TiO2 additive in oil-in-water (O/W) lubricant. The results show that the contact angle between high-speed steel with oxide scale and 1% (oil concentration) O/W lubricant decreases first and then increases as the concentration of nano-TiO2 particle in the O/W lubricant increases. The smallest contact angle is obtained after an addition of 4% nano-TiO2 additive to the O/W lubricant. This is because the nano-TiO2 can enhance the surface excess of the oil when the nano-TiO2 particles distribute throughout the surface of the oil droplets, and after saturation they can distribute throughout the water and also improve the surface excess of the water in the O/W lubricant. The scratch and hot rolling tests show that the nano-TiO2 particles in the O/W lubricant can also reduce friction, improve scratch resistance, and reduce rolling force. A method for measuring the adhesion force of the oxide scale is proposed and the effect of nanoparticles is discussed. It is demonstrated that the effect of self-lubrication of nanoparticles in the O/W lubricant plays a more significant role in the tribological behavior during hot rolling than wettability.

Authors


  •   Xia, Wenzhen (external author)
  •   Zhao, Jingwei
  •   Hui Wu
  •   Zhao, Xianming (external author)
  •   Zhang, Xiaoming (external author)
  •   Xu, Jianzhong (external author)
  •   Hee, Ay Ching (external author)
  •   Jiang, Zhengyi

Publication Date


  • 2017

Citation


  • Xia, W., Zhao, J., Wu, H., Zhao, X., Zhang, X., Xu, J., Hee, A. & Jiang, Z. (2017). Effects of nano-TiO2 additive in oil-in-water lubricant on contact angle and antiscratch behavior. Tribology Transactions, 60 (2), 362-372.

Scopus Eid


  • 2-s2.0-84981243988

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/6070

Has Global Citation Frequency


Number Of Pages


  • 10

Start Page


  • 362

End Page


  • 372

Volume


  • 60

Issue


  • 2

Place Of Publication


  • United States