Mechanical and tribological properties of plasma sprayed NiAl composite coatings with addition of nanostructured TiO2/Bi2O3

Wang, Xinpeng; Feng, Xin; Lu, Cheng; Yi, Gewen; Jia, Junbo; Li, Hongchun

doi:10.1016/j.surfcoat.2018.05.055

Cited by 41 publications

(11 citation statements)

References 35 publications

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“…The widely accepted anti-wear theories were ball effect, filling and repairing effect and third body protection [29,30,31]. Nano-TiO 2 had the effect of reducing the friction coefficient, decreasing abrasion and repairing wear defects [32]. The friction characteristics of base oil had been improved.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and Characterization of Polycaprolactone Modified Trimellitate Nano-Lubricant

et al. 2019

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The application of trimellitate (TMT) in the lubricating oil industry was seriously restricted because of its low viscosity index. In the work reported here, polycaprolactone (PCL) soft chain was embedded into the structure of TMT in order to improve the viscosity index. Characterization of the polymers was done by proton nuclear magnetic resonance (1H-NMR), Fourier transform infrared spectroscopy (FT-IR) and thermogravimetric analysis (TG). Results supported our design and were consistent with the target product structure. Performance of the prepared materials was evaluated by standard ASTM methods. Noticeably, the viscosity index of the modified TMT increased from 8 to above 100, which greatly improved its viscosity-temperature performance. As the initiator, tetrabutyl titanate (TBT) can not only complete the ring-opening polymerization of caprolactam (ε-CL) at room temperature, but also generate nano-TiO2 by-products with excellent anti-wear properties during the synthesis. Characterization of the nano-TiO2 was done by scanning electron microscopy (SEM), FT-IR, TG and X-ray diffractometry (XRD). The friction and wear tests were conducted on a four-ball friction tester and the surface morphologies of worn surfaces were investigated by SEM. The experimental results clearly showed that the modified TMT showed better viscosity index and thermal stability as compared to the unmodified one. The modified nano-TMT base oil features excellent lubricant performance with good viscosity–temperature properties, thermal stability and anti-wear properties.

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Section: Resultsmentioning

confidence: 99%

Synthesis and Characterization of Polycaprolactone Modified Trimellitate Nano-Lubricant

et al. 2019

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“…EDS analysis confirmed that ZnO and ZnWO 4 were responsible for reducing CoF at HT for the MZW composite. Wang et al [ 86 ] studied the friction and wear behavior of a NiAl composite coating containing nanostructured TiO 2 and Bi 2 O 3 from RT to 800 °C. The authors considered three composite coatings with a 3:2 ratio of TiO 2 and Bi 2 O 3 .…”

Section: Tribology Of Solid Lubricantsmentioning

confidence: 99%

Self-Lubricating Materials for Extreme Condition Applications

John

Menezes

2021

Materials

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Lubrication for extreme conditions, such as high temperature, cryogenic temperature, vacuum pressure, high load, high speed, and corrosive environments, is a continuing challenge among tribologists and space engineers due to the inadequate friction and wear properties of liquid lubricants. As a result, tremendous research effort has been put forward to study lubrication mechanisms for various machine elements under challenging conditions over the past two decades. Self-lubricating materials have been most widely used for adequate lubrication in extreme conditions in recent years. This review paper presents state-of-the-art of materials for lubrication in extreme condition applications in aerospace, automotive, and power generation areas. More specifically, solid lubricants dispersed in various matrices for lubrication application were analyzed in-depth under challenging conditions. This study also reports the self-lubricating materials and their lubrication mechanisms. Finally, various applications and challenges of self-lubricating materials were explored.

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“…In view of above, Titania (TiO 2 ) coating could be the savier material for many state of the art applications due to its superior mechanical, protective and tribological properties, which is extensively studied and documented in literature. [25][26][27] However, the damping behaviour of titania coating is not yet fully explored in the reported literature. Therefore, in this paper, we deposited titania coating over Steel alloy by conventional gun spray method using oximemodi ed Titania (IV) Iso-propoxide as a sol-gel precursor.…”

Section: Introductionmentioning

confidence: 99%

Vibration and noise analysis of acetoxime modified TiO2 coating over steel alloy

Singh

Goyal

Saini

et al. 2022

Int J Interact Des Manuf

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In this research work, conventional gun spray method is used to coat oximemodi edtitanium(IV) isopropoxide on steel to nd out damping behaviour of coating. The most conventional method is modal analysis is used to measure vibration and noise damping of bare and titania coated samples. Test results revealed that a thin coating has improved the vibration and noise damping when compare with bare sample. SEM, EDX and AFM analysis were carried out to study morphology, coating thickness and composition of coating on the sample surface.

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Mechanical and tribological properties of plasma sprayed NiAl composite coatings with addition of nanostructured TiO2/Bi2O3

Cited by 41 publications

References 35 publications

Synthesis and Characterization of Polycaprolactone Modified Trimellitate Nano-Lubricant

Synthesis and Characterization of Polycaprolactone Modified Trimellitate Nano-Lubricant

Self-Lubricating Materials for Extreme Condition Applications

Vibration and noise analysis of acetoxime modified TiO2 coating over steel alloy

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