Experimental study on the tribological behaviour of CeO<sub>2</sub>‐diesel blends on the injector body

Yin, Bifeng; Kuang, Xin; Xu, Bo; Jia, Huang; Hua, Xijun

doi:10.1002/ls.1502

Cited by 6 publications

(3 citation statements)

References 25 publications

(25 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Finally, CeO 2 powder was obtained after centrifugation washing and drying. Nano graphene powder was commercially available [25].…”

Section: Preparation and Modification Of Nanomaterialsmentioning

confidence: 99%

“…In the new engine context, lubricating oils tend to be of low viscosity. The different quality of nanomaterials (such as size and shape) also has an effect on friction and wear properties [25]. At present, no comparison has been made between nano CeO 2 and graphene as additions to lubricating oil for the key engine friction pairs under the same dispersion conditions and the same working conditions.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Study of the tribological properties of nano lubricating oil blends for diesel engines

Kuang¹,

Yin²,

Yang³

et al. 2022

Nano Futures

Self Cite

View full text Add to dashboard Cite

This paper is to evaluate and compare the tribological properties of lubricating oil blends added with nano graphene and lubricating oil blends added with cerium oxide (CeO2) on the key friction pairs of the diesel engines. The dispersion stability is the premise of studying the tribological properties. In this paper, nano-CeO2 particles were self-made and high-quality nano-graphene was purchased. The dispersion stability of the two nanomaterials in lubricating oil was studied after the same modification respectively. According to the working conditions of the cylinder liner and the piston ring, the friction and wear tests of the lubricating oil blends added with the modified nanomaterials were carried out at the different temperatures. The results showed that the oleic acid and the stearic acid modified the two nanomaterials successfully. The dispersion stability of the modified nanomaterials in lubricating oil was improved. The dispersion stability of the lubricating oil blends added with graphene before and after modification was slightly higher than that of lubricating oil blends added with CeO2 before and after modification, respectively. At the high temperature, the anti-friction property of the two nano lubricating oil blends was similar. At the ambient temperature, lubricating oil blends added with modified CeO2 did not play a role in reducing friction, while lubricating oil blends added with modified graphene had the effect of reducing friction. Whether at ambient temperature or at the high temperature, the anti-wear property lubricated with lubricating oil blends added with modified CeO2 within the right concentration range was better than that lubricated with lubricating oil blends added with modified graphene.

show abstract

“…Finally, CeO 2 powder was obtained after centrifugation washing and drying. Nano graphene powder was commercially available [25].…”

Section: Preparation and Modification Of Nanomaterialsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Study of the tribological properties of nano lubricating oil blends for diesel engines

Kuang¹,

Yin²,

Yang³

et al. 2022

Nano Futures

Self Cite

View full text Add to dashboard Cite

show abstract

“…Ce 4+ combines with oxygen to form CeO 2 . As an additive, it is beneficial to significantly reduce the friction coefficient and wear rate [54][55][56]. Ce 3+ and oxygen form Ce 2 O 3 , which has the effect of removing impurities and refining grains [26,57].…”

Section: Tribological Performance Analysismentioning

confidence: 99%

Effect of Working Pressure on Tribological Properties of Ce-Ti/MoS2 Coatings Using Magnetron Sputter

2022

View full text Add to dashboard Cite

In preparing MoS2-based coatings by magnetron sputtering, the working pressure of the vacuum chamber directly affects the number and kinetic energy of sputtering particles, which causes a difference in coatings structure and performance. In this paper, MoS2 composite coatings with Ce and Ti binary doping were prepared by unbalanced magnetron sputtering technology, and the variation of composition, structure, and tribological properties of Ce-Ti/MoS2 coatings under different working pressures was studied. The results demonstrated that Ce and Ti doping improves pure MoS2 coatings. The Ce-Ti/MoS2 coatings reached the hardness of 9.02 GPa and the friction coefficient of 0.065 when working pressure was at 0.6 Pa. It was also observed that the deposition efficiency and wear rate reached the optimal value at 0.9 Pa. With the increase of working pressure, the columnar structure of the coating was coarse due to the change of kinetic energy and quantity of particles in the chamber. The intensity of the MoS2 (002) diffraction peak decreased, which eventually led to a poor lubrication effect and aggravated wear. This study provides technical guidance for preparing metal-doped MoS2 composite coatings with excellent mechanical and tribological properties.

show abstract

Susceptibility of Poly–Alpha Olefin and Diisooctyl Sebacate Base Oils With Different Polarities to Oleic Acid Surface–Capped Ultra‐Small Cerium Oxide Nanoparticle

Bian,

Song,

et al. 2024

Lubrication Science

View full text Add to dashboard Cite

A key issue for nano‐additive to effectively exert tribological function is to ensure its entrance to and adhesion on the frictional contact surfaces. But the adhesion of nano‐additive on the rubbed surfaces under oil lubrication faces the challenge of the competitive adsorption of lubricant base oil thereon. In this study, oleic acid–modified ultra‐small cerium oxide (OA‐CeO2) nanoparticle was synthesised by one‐pot liquid‐phase surface‐modification method in the presence of OA as the surface modifier. The susceptibility of non‐polar poly–alpha olefin 6 (PAO6) and polar diisooctyl sebacate (DIOS) base oils to the as‐prepared OA‐CeO2 nano‐additive was investigated, and the effect of the OA‐CeO2 nano‐additive on the friction‐reducing and anti‐wear abilities of the two kinds of base oils towards a steel–steel sliding contact was investigated with four‐ball friction and wear tester. Furthermore, the tribological mechanism of the adsorption and deposition of the OA‐CeO2 nano‐additive on the surface of friction steel and the competitive adsorption of base oil were discussed. Characterisations by scanning electron microscopy, transmission electron microscopy and Fourier transform infrared spectroscopy demonstrate that the as‐prepared OA‐CeO2 nanoparticle is of a spherical shape and has an ultra‐small average size of 1.2 nm. As the lubricant additive in PAO6 and DIOS base oils, the OA‐CeO2 nano‐additive exhibits different tribological properties, which is attributed to the difference in the base oils' polarity. Namely, the CeO2 nanoparticle in the non‐polar PAO6 base oil is more easily adsorbed on the rubbed surface of the steel–steel sliding contact, thereby forming the CeO2 deposition film to improve the tribological properties of the base oil. However, the CeO2 nanoparticle added in polar DIOS base oil is difficult to form the CeO2 deposition film, because of the competitive and preferential adsorption of the polar base oil on the rubbed steel surface. Therefore, it is imperative to select the base oils with proper polarity to better exert the friction‐reducing and anti‐wear functions of the OA‐CeO2 nano‐additive.

show abstract

Experimental study on the tribological behaviour of CeO₂‐diesel blends on the injector body

Cited by 6 publications

References 25 publications

Study of the tribological properties of nano lubricating oil blends for diesel engines

Study of the tribological properties of nano lubricating oil blends for diesel engines

Effect of Working Pressure on Tribological Properties of Ce-Ti/MoS2 Coatings Using Magnetron Sputter

Susceptibility of Poly–Alpha Olefin and Diisooctyl Sebacate Base Oils With Different Polarities to Oleic Acid Surface–Capped Ultra‐Small Cerium Oxide Nanoparticle

Contact Info

Product

Resources

About

Experimental study on the tribological behaviour of CeO2‐diesel blends on the injector body

Cited by 6 publications

References 25 publications

Study of the tribological properties of nano lubricating oil blends for diesel engines

Study of the tribological properties of nano lubricating oil blends for diesel engines

Effect of Working Pressure on Tribological Properties of Ce-Ti/MoS2 Coatings Using Magnetron Sputter

Susceptibility of Poly–Alpha Olefin and Diisooctyl Sebacate Base Oils With Different Polarities to Oleic Acid Surface–Capped Ultra‐Small Cerium Oxide Nanoparticle

Contact Info

Product

Resources

About

Experimental study on the tribological behaviour of CeO₂‐diesel blends on the injector body