This study aims to reveal the roles and mechanisms of Al2O3/TiO2 hybrid nanoparticles into the lube oils which could reinforce engine components durability via reducing the friction, wear, or fuel economy in automotive engines. The tribological tests were carried out under different sliding speeds from 0.21 to 1.75 m/s and loads from 30 to 250 N using a reciprocating tribometer to simulate the ring/liner interface in the engine according to ASTM G181. The tribological results using hybrid nanolubricants suggested that the friction coefficient and wear rate of the ring decreased in the ranges 39–53% and 25–33%, respectively, compared to nanoparticles-free lube oil. The combined evidence of the worn surfaces analysis confirmed that the key mechanisms in antifriction and antiwear are a combination of the nanoparticles rolling mechanism and the replenishment mechanism of tribofilms on the sliding contact interfaces. In addition, a tribofilm formed on the rubbing surfaces is not only from the nanoparticles but also from Fe which is formed as a result of iron debris particles and oil additive package such as P and S originating from zinc dialkyldithiophosphate.
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September 2018
Research-Article
Friction and Wear Reduction Mechanisms of the Reciprocating Contact Interfaces Using Nanolubricant Under Different Loads and Speeds
Mohamed Kamal Ahmed Ali,
Mohamed Kamal Ahmed Ali
Hubei Key Laboratory of Advanced Technology
for Automotive Components,
Wuhan University of Technology,
Wuhan 430070, China;
Automotive and Tractors Engineering
Department,
Faculty of Engineering,
Minia University,
El-Minia 61111, Egypt;
Hubei Collaborative Innovation Center for
Automotive Components Technology,
Wuhan 430070, China
e-mail: eng.m.kamal@mu.edu.eg
for Automotive Components,
Wuhan University of Technology,
Wuhan 430070, China;
Automotive and Tractors Engineering
Department,
Faculty of Engineering,
Minia University,
El-Minia 61111, Egypt;
Hubei Collaborative Innovation Center for
Automotive Components Technology,
Wuhan 430070, China
e-mail: eng.m.kamal@mu.edu.eg
Search for other works by this author on:
Hou Xianjun,
Hou Xianjun
Hubei Key Laboratory of Advanced Technology
for Automotive Components,
Wuhan University of Technology,
Wuhan 430070, China;
Hubei Collaborative Innovation Center for
Automotive Components Technology,
Wuhan 430070, China
e-mail: houxj@whut.edu.cn
for Automotive Components,
Wuhan University of Technology,
Wuhan 430070, China;
Hubei Collaborative Innovation Center for
Automotive Components Technology,
Wuhan 430070, China
e-mail: houxj@whut.edu.cn
Search for other works by this author on:
F. A. Essa,
F. A. Essa
Mechanical Engineering Department,
Faculty of Engineering,
Kafrelsheikh University,
Kafrelsheikh 33516, Egypt
Faculty of Engineering,
Kafrelsheikh University,
Kafrelsheikh 33516, Egypt
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Mohamed A. A. Abdelkareem,
Mohamed A. A. Abdelkareem
Hubei Key Laboratory of Advanced Technology
for Automotive Components,
Wuhan University of Technology,
Wuhan 430070, China;
Automotive and Tractors Engineering
Department,
Faculty of Engineering,
Minia University,
El-Minia 61111, Egypt;
Hubei Collaborative Innovation Center for
Automotive Components Technology,
Wuhan 430070, China
for Automotive Components,
Wuhan University of Technology,
Wuhan 430070, China;
Automotive and Tractors Engineering
Department,
Faculty of Engineering,
Minia University,
El-Minia 61111, Egypt;
Hubei Collaborative Innovation Center for
Automotive Components Technology,
Wuhan 430070, China
Search for other works by this author on:
Ahmed Elagouz,
Ahmed Elagouz
Hubei Key Laboratory of Advanced Technology
for Automotive Components,
Wuhan University of Technology,
Wuhan 430070, China;
Automotive and Tractors Engineering
Department,
Faculty of Engineering,
Minia University,
El-Minia 61111, Egypt;
Hubei Collaborative Innovation Center for
Automotive Components Technology,
Wuhan 430070, China
for Automotive Components,
Wuhan University of Technology,
Wuhan 430070, China;
Automotive and Tractors Engineering
Department,
Faculty of Engineering,
Minia University,
El-Minia 61111, Egypt;
Hubei Collaborative Innovation Center for
Automotive Components Technology,
Wuhan 430070, China
Search for other works by this author on:
S. W. Sharshir
S. W. Sharshir
Mechanical Engineering Department, Faculty of
Engineering, Kafrelsheikh University,
Kafrelsheikh 33516, Egypt
Engineering, Kafrelsheikh University,
Kafrelsheikh 33516, Egypt
Search for other works by this author on:
Mohamed Kamal Ahmed Ali
Hubei Key Laboratory of Advanced Technology
for Automotive Components,
Wuhan University of Technology,
Wuhan 430070, China;
Automotive and Tractors Engineering
Department,
Faculty of Engineering,
Minia University,
El-Minia 61111, Egypt;
Hubei Collaborative Innovation Center for
Automotive Components Technology,
Wuhan 430070, China
e-mail: eng.m.kamal@mu.edu.eg
for Automotive Components,
Wuhan University of Technology,
Wuhan 430070, China;
Automotive and Tractors Engineering
Department,
Faculty of Engineering,
Minia University,
El-Minia 61111, Egypt;
Hubei Collaborative Innovation Center for
Automotive Components Technology,
Wuhan 430070, China
e-mail: eng.m.kamal@mu.edu.eg
Hou Xianjun
Hubei Key Laboratory of Advanced Technology
for Automotive Components,
Wuhan University of Technology,
Wuhan 430070, China;
Hubei Collaborative Innovation Center for
Automotive Components Technology,
Wuhan 430070, China
e-mail: houxj@whut.edu.cn
for Automotive Components,
Wuhan University of Technology,
Wuhan 430070, China;
Hubei Collaborative Innovation Center for
Automotive Components Technology,
Wuhan 430070, China
e-mail: houxj@whut.edu.cn
F. A. Essa
Mechanical Engineering Department,
Faculty of Engineering,
Kafrelsheikh University,
Kafrelsheikh 33516, Egypt
Faculty of Engineering,
Kafrelsheikh University,
Kafrelsheikh 33516, Egypt
Mohamed A. A. Abdelkareem
Hubei Key Laboratory of Advanced Technology
for Automotive Components,
Wuhan University of Technology,
Wuhan 430070, China;
Automotive and Tractors Engineering
Department,
Faculty of Engineering,
Minia University,
El-Minia 61111, Egypt;
Hubei Collaborative Innovation Center for
Automotive Components Technology,
Wuhan 430070, China
for Automotive Components,
Wuhan University of Technology,
Wuhan 430070, China;
Automotive and Tractors Engineering
Department,
Faculty of Engineering,
Minia University,
El-Minia 61111, Egypt;
Hubei Collaborative Innovation Center for
Automotive Components Technology,
Wuhan 430070, China
Ahmed Elagouz
Hubei Key Laboratory of Advanced Technology
for Automotive Components,
Wuhan University of Technology,
Wuhan 430070, China;
Automotive and Tractors Engineering
Department,
Faculty of Engineering,
Minia University,
El-Minia 61111, Egypt;
Hubei Collaborative Innovation Center for
Automotive Components Technology,
Wuhan 430070, China
for Automotive Components,
Wuhan University of Technology,
Wuhan 430070, China;
Automotive and Tractors Engineering
Department,
Faculty of Engineering,
Minia University,
El-Minia 61111, Egypt;
Hubei Collaborative Innovation Center for
Automotive Components Technology,
Wuhan 430070, China
S. W. Sharshir
Mechanical Engineering Department, Faculty of
Engineering, Kafrelsheikh University,
Kafrelsheikh 33516, Egypt
Engineering, Kafrelsheikh University,
Kafrelsheikh 33516, Egypt
1Corresponding author.
Contributed by the Tribology Division of ASME for publication in the JOURNAL OF TRIBOLOGY. Manuscript received August 22, 2017; final manuscript received February 15, 2018; published online April 30, 2018. Assoc. Editor: Dae-Eun Kim.
J. Tribol. Sep 2018, 140(5): 051606 (10 pages)
Published Online: April 30, 2018
Article history
Received:
August 22, 2017
Revised:
February 15, 2018
Citation
Ahmed Ali, M. K., Xianjun, H., Essa, F. A., Abdelkareem, M. A. A., Elagouz, A., and Sharshir, S. W. (April 30, 2018). "Friction and Wear Reduction Mechanisms of the Reciprocating Contact Interfaces Using Nanolubricant Under Different Loads and Speeds." ASME. J. Tribol. September 2018; 140(5): 051606. https://doi.org/10.1115/1.4039720
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