Effect of Surface Roughness and Particle Size on Lubrication Mechanisms of SiO2 Nanoparticles
In this study, a series of tribological tests were conducted on a pin-on-disc tester to study the lubrication mechanism of SiO2 nanoparticles under different surface roughness considering various loads and velocities. For a comprehensive understanding of the mechanism of SiO2 nanoparticles, base flu...
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| Format: | Article |
| Language: | English |
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Wiley
2022-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2022/7051650 |
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| author | Linghui Kong Lei Zhang Yueyue Bao Dong Liu Shutan Liu |
| author_facet | Linghui Kong Lei Zhang Yueyue Bao Dong Liu Shutan Liu |
| author_sort | Linghui Kong |
| collection | DOAJ |
| description | In this study, a series of tribological tests were conducted on a pin-on-disc tester to study the lubrication mechanism of SiO2 nanoparticles under different surface roughness considering various loads and velocities. For a comprehensive understanding of the mechanism of SiO2 nanoparticles, base fluid was also employed as a contrast. Results show that the reductions of friction coefficients and wear scar widths increase with the decrease of surface roughness, due to the increase in rolling effect and self-repairing mechanism of SiO2 nanoparticles. The lubrication mechanism of SiO2 nanoparticles is the rolling effect when the height-diameter ratio (λ) is less than 6, and the self-repairing mechanism at λ of 6 and 10, whereas, there is no obvious difference by adding nanoparticles when λ is 20. When the height-diameter ratio is less than 6, surface wears show an increasing trend as the load increases due to the high hardness of nanoparticles, while it is the opposite at λ of 10 and 20 because of the self-repairing mechanism. |
| format | Article |
| id | doaj-art-cb9472c6295a42f3ac9d91756ea9d68f |
| institution | OA Journals |
| issn | 1687-8442 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-cb9472c6295a42f3ac9d91756ea9d68f2025-08-20T02:19:47ZengWileyAdvances in Materials Science and Engineering1687-84422022-01-01202210.1155/2022/7051650Effect of Surface Roughness and Particle Size on Lubrication Mechanisms of SiO2 NanoparticlesLinghui Kong0Lei Zhang1Yueyue Bao2Dong Liu3Shutan Liu4The Yellow River Institute of Hydraulic ResearchThe Yellow River Institute of Hydraulic ResearchSchool of Materials Science and EngineeringThe Yellow River Institute of Hydraulic ResearchThe Yellow River Institute of Hydraulic ResearchIn this study, a series of tribological tests were conducted on a pin-on-disc tester to study the lubrication mechanism of SiO2 nanoparticles under different surface roughness considering various loads and velocities. For a comprehensive understanding of the mechanism of SiO2 nanoparticles, base fluid was also employed as a contrast. Results show that the reductions of friction coefficients and wear scar widths increase with the decrease of surface roughness, due to the increase in rolling effect and self-repairing mechanism of SiO2 nanoparticles. The lubrication mechanism of SiO2 nanoparticles is the rolling effect when the height-diameter ratio (λ) is less than 6, and the self-repairing mechanism at λ of 6 and 10, whereas, there is no obvious difference by adding nanoparticles when λ is 20. When the height-diameter ratio is less than 6, surface wears show an increasing trend as the load increases due to the high hardness of nanoparticles, while it is the opposite at λ of 10 and 20 because of the self-repairing mechanism.http://dx.doi.org/10.1155/2022/7051650 |
| spellingShingle | Linghui Kong Lei Zhang Yueyue Bao Dong Liu Shutan Liu Effect of Surface Roughness and Particle Size on Lubrication Mechanisms of SiO2 Nanoparticles Advances in Materials Science and Engineering |
| title | Effect of Surface Roughness and Particle Size on Lubrication Mechanisms of SiO2 Nanoparticles |
| title_full | Effect of Surface Roughness and Particle Size on Lubrication Mechanisms of SiO2 Nanoparticles |
| title_fullStr | Effect of Surface Roughness and Particle Size on Lubrication Mechanisms of SiO2 Nanoparticles |
| title_full_unstemmed | Effect of Surface Roughness and Particle Size on Lubrication Mechanisms of SiO2 Nanoparticles |
| title_short | Effect of Surface Roughness and Particle Size on Lubrication Mechanisms of SiO2 Nanoparticles |
| title_sort | effect of surface roughness and particle size on lubrication mechanisms of sio2 nanoparticles |
| url | http://dx.doi.org/10.1155/2022/7051650 |
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