Foamed-metal reinforced material: tribological behaviours of foamed-copper filled with polytetrafluoroethylene and graphite | |
Department | 固体润滑国家重点实验室 |
Ji, Keju1,2; Xia YQ(夏延秋)1; Wang HL(王鸿灵)1; Dai, Zhendong2; Xia YQ(夏延秋) | |
2012 | |
Source Publication | Proceedings of the Institution of Mechanical Engineerings, Part J: Journal of Engineering Tribology |
ISSN | 1350-6501 |
Volume | 226Issue:J2Pages:123-137 |
Abstract | A novel foamed copper based (FCB) composite is developed as a rubbing pair material. The composites consist of the foamed copper and solid lubricants, such as polytetrafluoroethylene and graphite. Four kinds of FCB composites were fabricated by vacuum filtration, compression moulding, and sintering process in an orderly manner. The thermal and electrical conductivities and tribological properties of the new composites were investigated. Because the interconnected metal skeletons have been embedded in the polymers, the FCB composites possess excellent thermal and electrical conductivities, including nice self-lubricating property. The friction and wear properties were investigated on an M-2000 friction and wear tester. An electric field was imposed between the sample and ring to monitor the tribo-chemical reaction and formation of transfer film by means of ‘contact resistance’. The measurements of friction temperatures were carried out by means of three thermocouples embedded in the material. The friction tests show that the friction coefficients of the FCB composites decrease almost monotonically with the increase of graphite content under different conditions; and the wear rates decrease overall compared with that of the homologous polymers, more obvious especially under severe conditions. The optical microscope, SEM, and XPS were adopted to study the worn surface morphologies and the transfer films. The main wear mechanism of the new composite is a three-body abrasion, caused and promoted by the plastic deformation, abrasive wear, and fatigue spalling. The oxidation of copper is the dominant chemical processes which occurred during the sliding process. |
Keyword | Foamed Copper Self-lubricating Composites Friction Material Thermal Conductivity Electrical Conductivity Wear Mechanisms |
Subject Area | 材料科学与物理化学 |
DOI | 10.1177/1350650111426520 |
Funding Organization | the National Natural Science Foundation of China (grant nos. 90916021;50823008);'Hundred Talents Program' of CAS;the West Doctors Funded Project of CAS |
Indexed By | SCI |
If | 0.631 |
Language | 英语 |
compositor | 第一作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/19436 |
Collection | 固体润滑国家重点实验室(LSL) |
Corresponding Author | Xia YQ(夏延秋) |
Affiliation | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China 2.Nanjing Univ Aeronaut & Astronaut, Acad Frontier Sci, Inst Bioinspired Struct & Surface Engn, Nanjing 210016, Peoples R China |
Recommended Citation GB/T 7714 | Ji, Keju,Xia YQ,Wang HL,et al. Foamed-metal reinforced material: tribological behaviours of foamed-copper filled with polytetrafluoroethylene and graphite[J]. Proceedings of the Institution of Mechanical Engineerings, Part J: Journal of Engineering Tribology,2012,226(J2):123-137. |
APA | Ji, Keju,Xia YQ,Wang HL,Dai, Zhendong,&夏延秋.(2012).Foamed-metal reinforced material: tribological behaviours of foamed-copper filled with polytetrafluoroethylene and graphite.Proceedings of the Institution of Mechanical Engineerings, Part J: Journal of Engineering Tribology,226(J2),123-137. |
MLA | Ji, Keju,et al."Foamed-metal reinforced material: tribological behaviours of foamed-copper filled with polytetrafluoroethylene and graphite".Proceedings of the Institution of Mechanical Engineerings, Part J: Journal of Engineering Tribology 226.J2(2012):123-137. |
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LZ01028513.pdf(11463KB) | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text |
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