Effect of ZrO2 Nanoparticles Additive on the Tribological Behavior of Multialkylated Cyclopentanes

Ma, Jianqi; Bai, Ming

doi:10.1007/s11249-009-9459-x

Cited by 21 publications

(6 citation statements)

References 19 publications

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“…Multialkylated cyclopentanes can support zirconia in tribological processes. A hard, protective ceramic-like tribofilm was formed on the surfaces prevented severe wear, seizure and damped the tribological impacts [15]. Zirconia doped lubricant showed lower wear rates and enabled to increase the maximum contact pressure (extreme pressure) compared to the reference.…”

Section: Zirconium-dioxde Particles As Lubricant Additivementioning

confidence: 99%

Tribological properties of nano-sized ZrO2 ceramic particles in automotive lubricants

Tóth¹,

Szabó²,

Kuti³

2021

FME Transactions

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The demand for decreasing CO2-emission and harmful material content of the exhaust gas of passenger cars requires the improvement of the entire powertrain including the applied lubricants. One of the possible future engines lubricant can be the nano-sized ceramic particles, which can provide positive tribological properties also in the presence of nonmetallic surface materials. This paper presents the experimental investigation of ZrO2 nanoceramic powder as a lubricant additive. The tribological performance of the lubricant samples was experimentally investigated on a ball-on-disc translation tribometer. An optimum concentration was found at 0.4 wt%, where the wear scar diameter on the ball specimen was reduced by more than 40% compared to the reference sample. The SEM-analysis confirmed the mending mechanism theory: nanoparticles were revealed to aggregate between the asperities resulting in a significantly smoother contact surface.

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Section: Zirconium-dioxde Particles As Lubricant Additivementioning

confidence: 99%

Tribological properties of nano-sized ZrO2 ceramic particles in automotive lubricants

Tóth¹,

Szabó²,

Kuti³

2021

FME Transactions

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“…In tribology, some nanomaterials were added into lubricating oil/grease to improve extreme pressure, anti-wear and friction-reduction properties [1]. In particular, the tribological properties of metals [2][3][4][5][6][7][8], metal oxides [9][10][11][12][13][14][15], metal sulphides [16][17][18][19], rare earth compounds [20][21][22][23][24], and borides [25][26][27][28] used as lubricating additives have been investigated. They can greatly improve the anti-wear and extreme pressure properties, reduce friction coefficient, and even retard the thermoinduced oxidation of lubricating oil/grease.…”

Section: Introductionmentioning

confidence: 99%

Tribological Properties of CaCO3 Nanoparticles as an Additive in Lithium Grease

et al. 2010

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CaCO 3 nanoparticles with an average size of 45 nm were synthesized via the carbonation method. The tribological properties of the CaCO 3 nanoparticles as an additive in lithium grease were evaluated with a four-ball tester. The results show that these CaCO 3 nanoparticles exhibit good performance in anti-wear and friction-reduction, load-carrying capacity, and extreme pressure properties. The action mechanism was estimated through analysis of the worn surface with X-ray photoelectron spectroscopy (XPS) and scanning electron microscope (SEM). The results indicate that a boundary film mainly composed of CaCO 3 , CaO, iron oxide, and other organic compounds was formed on the worn surface during the friction process.

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“…Since the friction‐enhancing components directly affect the properties of the friction surface, it is usually necessary to strictly control the content of the friction‐enhancing components in order to create sufficient shear force when sliding friction occurs with the counterpart surface and to reduce brake disc scratching. It has been established that introducing ZrO 2 particles in the suitable proportion can significantly enhance the friction stability and load‐bearing capability of materials 25 . Vlastimil et al 26 discovered that adding SiC to the friction material improved the COF and the wear resistance, and that 3.4% SiC was the optimal amount to add.…”

Section: Introductionmentioning

confidence: 99%

“…It has been established that introducing ZrO 2 particles in the suitable proportion can significantly enhance the friction stability and load-bearing capability of materials. 25 Vlastimil et al 26 discovered that adding SiC to the friction material improved the COF and the wear resistance, and that 3.4% SiC was the optimal amount to add. Xing et al 27 reported that the addition of 2% SiO 2 particles with a 120 nm diameter reduced the wear rate of the composite material by a ratio of 2-10.…”

Section: Introductionmentioning

confidence: 99%

Effect of alumina content on the thermal, mechanical and tribological properties of resin‐based friction materials

Wang,

Ling,

Luan

et al. 2023

Polymer Composites

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To investigate the effect of alumina on the thermal, mechanical, and tribological properties of resin‐based friction materials, five friction materials with different alumina contents were prepared by the hot press molding process. The experimental results showed denser friction materials possessed higher hardness, while compressive strength and compression modulus dropped as alumina decreased. Friction material with 6 wt% alumina exhibited outstanding impact strength and great heat resistance. It also showed excellent friction stability, with a maximum mean coefficient of friction (COF) steady between 0.408 and 0.425 at various braking speeds. The wear resistance of friction materials had a positive relationship with the stability of the COF, and the greater the stability of the COF, the better the wear resistance and the lower the corresponding wear rate. The morphology of the worn surface indicated multiple sources of friction at different braking speeds, and large areas of dense friction films were beneficial to stabilizing the COF and reducing the wear rate.Highlights The sample with 6 wt% alumina showed excellent heat resistance, with a residual value of 83.5% at 800°C. The highest compressive strength and compression modulus were achieved in the sample with 8 wt% alumina. The sample containing 6 wt% alumina exhibited the highest COF and the lowest wear rate. The maximum subsurface temperature of the friction materials basically rose as braking speed increased. Large areas of dense friction films were beneficial to stabilizing the COF and reducing the wear rate.

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Effect of ZrO2 Nanoparticles Additive on the Tribological Behavior of Multialkylated Cyclopentanes

Cited by 21 publications

References 19 publications

Tribological properties of nano-sized ZrO2 ceramic particles in automotive lubricants

Tribological properties of nano-sized ZrO2 ceramic particles in automotive lubricants

Tribological Properties of CaCO3 Nanoparticles as an Additive in Lithium Grease

Effect of alumina content on the thermal, mechanical and tribological properties of resin‐based friction materials

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