Article
Engineering, Mechanical
Feng Nan, Dong Wang
Summary: The tribological properties of attapulgite as a lubricant additive on electric-brush plated Ni coating were investigated. Results showed that an appropriate amount of attapulgite significantly improved the friction-reducing and antiwear properties of 150 SN lubricating oil on the Ni coating. A tribofilm composed of Ni, NiO, SiO2, Al2O3, graphite, and organic compounds was formed on the worn surface under the action of attapulgite, which contributed to the reduction of friction and wear.
Article
Engineering, Mechanical
Bo Yu, Kai Wang, Xianjuan Pang, Gensheng Wu, Jibin Pu, Haichao Zhao
Summary: By grafting octadecylamine onto graphene oxide through a simple amidation reaction, ODA-RGO was obtained as a lubricant additive, showing beneficial effects on lubrication and friction-reduction. The excellent tribological behavior was attributed to the formation of a protective film and the restacked shape of ODA-RGO.
TRIBOLOGY INTERNATIONAL
(2022)
Article
Engineering, Mechanical
Kunpeng Wang, Huaichao Wu, Hongdong Wang, Yuhong Liu, Lv Yang, Limei Zhao
Summary: The study prepared molybdenum-dotted nanoplatelets using an aqueous miscible organic solvent treatment method, enhancing the specific surface area and dispersion of attapulgite. The nanoplatelets showed excellent tribological properties and self-repairing ability in an oil-based lubricant system.
Article
Engineering, Mechanical
Qiulong Gao, Shuwen Liu, Kaiming Hou, Xiaonan Miao, Zhangpeng Li, Jinqing Wang
Summary: Environment-friendly and sustainable deep eutectic solvents (DESs) are regarded as a new type of lubricant. MoSx/rGO nanohybrids were synthesized and used as lubricant additive to improve the tribological performance of DES. The nanohybrids demonstrated excellent dispersibility in DES. Tribological tests showed that adding 1.5 wt% MoSx/rGO to DES resulted in the best lubrication performance for steel tribopair, reducing friction by 31.2% and wear by 88.2%, attributed to the synergistic effect between MoSx/rGO nanohybrid and DES. The attachment of nanohybrids to the friction interface, which triggered the formation of a robust tribofilm, was responsible for the superior lubricating properties of DES containing nanohybrids. These findings offer new insights for enhancing the tribological performance of DES by incorporating effective additives.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Engineering, Mechanical
Sang T. Pham, Khai K. Huynh, Kiet A. Tieu
Summary: The addition of SiO2 nanoparticles enhances the anti-oxidation and lubrication performance of sodium borate melt, while inhibiting the corrosion attack of sodium on oxide surfaces. Other nanoparticles can only improve one aspect of performance and cannot simultaneously enhance both anti-oxidation and lubrication properties.
TRIBOLOGY INTERNATIONAL
(2022)
Article
Engineering, Mechanical
Hailong Liu, Yajing Huang, Yaozhu Wang, Xiaomin Zhao, Danqing Chen, Guohua Chen
Summary: The span80-coated anthracite sheets showed excellent tribological properties, good dispersion stability in oil, and reduced friction coefficient, wear scar diameter, and wear volume. The combination of crystalline and amorphous carbon in anthracite sheets formed a protective film, leading to decreased wear on the friction pair, and achieving effective friction reduction and anti-wear effects in a wide range of conditions.
Article
Materials Science, Multidisciplinary
Xianbin Hou, Xiang Liu, Leyang Dai, Yuhao Yang, Jinhong Du, Yongjian Wang, Hong Wan, Xiang Rao
Summary: Abnormal wear of the cylinder liner and piston ring in a marine diesel engine can lead to engine failure and significant energy loss. This study prepared a potassium borate/graphene (PB/GN) nano-composite lubricant additive suitable for marine diesel engines and investigated its tribological properties in 500N base oil. The results showed that the PB/GN nano-composite additive significantly improved the tribological performances of the base oil due to the thermal conductivity of graphene and the tribofilms formed on the worn surface.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Materials Science, Multidisciplinary
Hongmei Xie, Yongyi Wei, Bin Jiang, Changping Tang, Chaoyin Nie
Summary: The study evaluated the tribological properties of carbon nanotube/spherical SiO2 nanoparticle combinations as lubricant additives in deionized water, demonstrating their superior performance, particularly the combination with a mass ratio of 0.2:0.3.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Engineering, Mechanical
Halley Welther Jacques Dias, Alessandra Batista Medeiros, Cristiano Binder, Joao Batista Rodrigue Neto, Jose Daniel Biasoli de Mello
Summary: In this study, Fe-SiC composites were obtained using powder technology, with SiC particles acting as precursors to generate a large amount of turbostratic graphite dispersed in the composite matrix. The alloy composition was selected using Thermo-Calc(R) software to stabilize the graphite phase in iron, leading to high yield. Extracted turbostratic 2D graphite particles dispersed in mineral oil showed reduced friction coefficient and wear rate compared to pure mineral oil or mineral oil with commercial graphite particles added, attributed to the low degree of interaction between the atomic planes due to misorientation and increased interplanar distances of turbostratic graphite.
Article
Materials Science, Multidisciplinary
Robar Arafat, Christian Koehn, Annelise Jean-Fulcrand, Tim Abraham, Georg Garnweitner, Christoph Herrmann
Summary: This study investigated the usability of Al2O3, ZrO2, and TiO2 nanoparticles in water-glycerine based nanofluids as MQL-cutting fluids in tribological tests. The physical-chemical properties and behavior of the nanofluids were assessed, and the influence of these properties on wear and particle deposition on steel workpieces was evaluated.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Engineering, Mechanical
Min Ji, Shuhai Liu, Huaping Xiao, Haoyang Li
Summary: This paper investigated the tribological behavior of two synthesized microcapsules filled with ionic liquids as smart tribological additives for water-based drilling mud. The experimental results showed that both microcapsules effectively reduced friction, with a significant decrease in coefficient of friction. The study also demonstrated the correlation between microcapsule responses and load stimuli, suggesting the potential for large-scale applications of smart lubrication.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Engineering, Mechanical
Zhixiang Li, Kunhong Hu, Yong Xu, Enzhu Hu, Xianguo Hu
Summary: A novel method to improve the dispersion and lubrication of nano-MoS2 in ester oil was proposed. The synthesized S-MoS2/sericite catalyst remained in DBA with a high content and the dispersion system showed good long-term stability. The dispersion system reduced friction and wear by forming a lubricating film or embedding in the soft surface under different conditions.
TRIBOLOGY INTERNATIONAL
(2022)
Article
Engineering, Chemical
Xiaoliang Ma, Chaoliang Gan, Xiaopeng Li, Yuting Li, Peng Feng, Xiaoqiang Fan, Xiangyuan Ye, Minhao Zhu
Summary: Core-shell structural SiO2@Cu and SiO2@MoS2 microspheres as lubricant additives show improved tribological properties, with SiO2@Cu microspheres outperforming SiO2@MoS2 due to their structural advantage and the synergistic effect of hard SiO2 core and Cu shell.
Article
Chemistry, Multidisciplinary
Shuqing Chen, Qi Ding, Yan Gu, Xin Quan, Ying Ma, Yulong Jia, Hongmei Xie, Jinzhu Tang
Summary: The tribological performances of fullerenol and nanodiamonds as additives in water-based lubricants for a-C coatings were investigated. Fullerenol provided better overall lubrication while nanodiamonds showed lower friction coefficients at ultra-low concentrations. Size differences played a role in determining the lubrication performance.
Article
Engineering, Mechanical
Almos D. Toth, Adam I. Szabo, Mate Zs. Lesko, Jan Rohde-Brandenburger, Rajmund Kuti
Summary: The continuous development of engine lubricants in terms of tribology is of great importance for improving fuel efficiency and extending the lifetime. This study investigates the effects of nanoscale spherical Y2O3 ceramic particles as an engine lubricant additive, revealing an optimal concentration at 0.5 wt% that significantly reduces wear scar diameter and wear volume. The high-magnitude SEM analysis highlights the working mechanisms of yttria in terms of surface smoothing and tribo-sintering.
Article
Engineering, Chemical
Feng Nan, Yanli Yin
Summary: The attapulgite grease with graphene shows superior friction-reducing and antiwear properties compared to the attapulgite base grease, especially under high load, frequency, and temperature conditions. The formation of a tribofilm composed of various compounds on the worn surface is responsible for the excellent tribological properties of the attapulgite grease with graphene.
LUBRICATION SCIENCE
(2021)
Article
Engineering, Mechanical
Feng Nan, Dong Wang
Summary: The tribological properties of attapulgite as a lubricant additive on electric-brush plated Ni coating were investigated. Results showed that an appropriate amount of attapulgite significantly improved the friction-reducing and antiwear properties of 150 SN lubricating oil on the Ni coating. A tribofilm composed of Ni, NiO, SiO2, Al2O3, graphite, and organic compounds was formed on the worn surface under the action of attapulgite, which contributed to the reduction of friction and wear.
