| The Tribological Performances of Multilayer Graphite-Like Carbon (GLC) Coatings Sliding Against Polymers for Mechanical Seals in Water Environments | |
| Department | 固体润滑国家重点实验室 |
Guan XY(关晓艳)1,2 ; Wang LP(王立平)1; Wang LP(王立平)
| |
| 2012 | |
| Source Publication | Tribology Letters
 |
| ISSN | 1023-8883 |
| Volume | 47Issue:1Pages:67-78 |
| Abstract | Graphite-like carbon (GLC) coatings are being increasingly used in mechanical seals, especially under the water-lubricated condition, to improve component durability by providing a low friction coefficient and high wear resistance. We have addressed the friction and wear performances of multilayer Cr/CrN/GLC coatings sliding against polyether–ether–ketone (PEEK), polyimide (PI), and polytetrafluoroethylene (PTFE) in distilled water under various applied loads and sliding speeds using a ring-on-block test rig. Stribeck curves were developed to analyze the water lubrication mechanisms. Start–stop tests were also carried out to evaluate the tribological performances of the coatings. Our results showed that the friction coefficients and wear rates of the polymers decreased with increasing sliding speeds. Compared to the applied load, the sliding speed had a major effect on the friction and wear performance of the polymer. Three coating/polymer tribopairs demonstrated different tribological behaviors, which were attributed to their different molecular structures, the different mechanical properties of the polymers, and the different lubrication mechanisms. The transfer film determined the lubrication mechanism of the three tribopairs and also resulted in the low friction coefficient and wear rate. The initial and steady-state friction coefficient also decreased with increases in the repeated start–stop times. Based on our results, we concluded that the coating/PEEK tribopair presented an excellent tribological performance that we ascribed to the chemical properties of PEEK and the hydrodynamic lubrication regime of the coating/PEEK tribopair at high sliding speeds. |
| Keyword | Graphite-like Carbon Coatings Mechanical Seals Tribological Performance Coating/polymer Tribopairs Lubrication Mechanism |
| Subject Area | 材料科学与物理化学 |
| DOI | 10.1007/s11249-012-9963-2 |
| Funding Organization | the National Natural Science Foundation of China (Grant No. 50905178 & 11172300) |
| Indexed By | SCI |
| If | 1.743 |
| Language | 英语 |
| Funding Project | 低维材料摩擦学组 |
| compositor | 第一作者单位 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/3498 |
| Collection | 固体润滑国家重点实验室（LSL） |
| Corresponding Author | Wang LP(王立平) |
| Affiliation | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China |
| Recommended Citation GB/T 7714 | Guan XY,Wang LP,Wang LP. The Tribological Performances of Multilayer Graphite-Like Carbon (GLC) Coatings Sliding Against Polymers for Mechanical Seals in Water Environments[J]. Tribology Letters,2012,47(1):67-78. |
| APA | Guan XY,Wang LP,&王立平.(2012).The Tribological Performances of Multilayer Graphite-Like Carbon (GLC) Coatings Sliding Against Polymers for Mechanical Seals in Water Environments.Tribology Letters,47(1),67-78. |
| MLA | Guan XY,et al."The Tribological Performances of Multilayer Graphite-Like Carbon (GLC) Coatings Sliding Against Polymers for Mechanical Seals in Water Environments".Tribology Letters 47.1(2012):67-78. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 67-78.PDF（1002KB） | 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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