The Tribological Properties of Multi-Layered Graphene as Additives of PAO2 Oil in Steel–Steel Contacts
Multi-layered graphene was prepared by supercritical CO2 exfoliation of graphite. As the additives of polyalphaolefin-2 (PAO2) oil, its tribological properties were investigated using four-ball test method. The friction reduction and anti-wear ability of pure lubricant was improved by the addition o...
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| Format: | Article |
| Language: | English |
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MDPI AG
2016-08-01
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| Series: | Lubricants |
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| Online Access: | http://www.mdpi.com/2075-4442/4/3/30 |
| _version_ | 1818015302786482176 |
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| author | Yan-Bao Guo Si-Wei Zhang |
| author_facet | Yan-Bao Guo Si-Wei Zhang |
| author_sort | Yan-Bao Guo |
| collection | DOAJ |
| description | Multi-layered graphene was prepared by supercritical CO2 exfoliation of graphite. As the additives of polyalphaolefin-2 (PAO2) oil, its tribological properties were investigated using four-ball test method. The friction reduction and anti-wear ability of pure lubricant was improved by the addition of graphene. With a favorable concentration, the graphene was dispersive. The PAO2 oil with 0.05 wt % graphene showed better tribological properties than that for the other concentration of graphene additives. It could be used as a good lubricant additive for its excellent tribological characteristics, and the multi-layered graphene can bear the load of the steel ball and prevent direct contact of the mating metal surfaces. However, a higher concentration would cause the agglomeration of graphene and weaken the improvement of tribological properties. |
| first_indexed | 2024-04-14T06:55:14Z |
| format | Article |
| id | doaj.art-69bbfddd525c4fa8a822f7b614b9ba2d |
| institution | Directory Open Access Journal |
| issn | 2075-4442 |
| language | English |
| last_indexed | 2024-04-14T06:55:14Z |
| publishDate | 2016-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Lubricants |
| spelling | doaj.art-69bbfddd525c4fa8a822f7b614b9ba2d2022-12-22T02:06:54ZengMDPI AGLubricants2075-44422016-08-01433010.3390/lubricants4030030lubricants4030030The Tribological Properties of Multi-Layered Graphene as Additives of PAO2 Oil in Steel–Steel ContactsYan-Bao Guo0Si-Wei Zhang1College of Mechanical and Transportation Engineering, China University of Petroleum, Beijing 102249, ChinaCollege of Mechanical and Transportation Engineering, China University of Petroleum, Beijing 102249, ChinaMulti-layered graphene was prepared by supercritical CO2 exfoliation of graphite. As the additives of polyalphaolefin-2 (PAO2) oil, its tribological properties were investigated using four-ball test method. The friction reduction and anti-wear ability of pure lubricant was improved by the addition of graphene. With a favorable concentration, the graphene was dispersive. The PAO2 oil with 0.05 wt % graphene showed better tribological properties than that for the other concentration of graphene additives. It could be used as a good lubricant additive for its excellent tribological characteristics, and the multi-layered graphene can bear the load of the steel ball and prevent direct contact of the mating metal surfaces. However, a higher concentration would cause the agglomeration of graphene and weaken the improvement of tribological properties.http://www.mdpi.com/2075-4442/4/3/30grapheneadditivesPAO2lubricationtribological properties |
| spellingShingle | Yan-Bao Guo Si-Wei Zhang The Tribological Properties of Multi-Layered Graphene as Additives of PAO2 Oil in Steel–Steel Contacts Lubricants graphene additives PAO2 lubrication tribological properties |
| title | The Tribological Properties of Multi-Layered Graphene as Additives of PAO2 Oil in Steel–Steel Contacts |
| title_full | The Tribological Properties of Multi-Layered Graphene as Additives of PAO2 Oil in Steel–Steel Contacts |
| title_fullStr | The Tribological Properties of Multi-Layered Graphene as Additives of PAO2 Oil in Steel–Steel Contacts |
| title_full_unstemmed | The Tribological Properties of Multi-Layered Graphene as Additives of PAO2 Oil in Steel–Steel Contacts |
| title_short | The Tribological Properties of Multi-Layered Graphene as Additives of PAO2 Oil in Steel–Steel Contacts |
| title_sort | tribological properties of multi layered graphene as additives of pao2 oil in steel steel contacts |
| topic | graphene additives PAO2 lubrication tribological properties |
| url | http://www.mdpi.com/2075-4442/4/3/30 |
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