| Tribological Performance of Lubricating Greases Based on Calcium Carbonate Polymorphs Under the Boundary Lubrication Condition | |
| Department | 固体润滑国家重点实验室 |
Liu DB(刘大波)1,2; Zhao GQ(赵改青)1 ; Wang XB(王晓波)1; Wang XB(王晓波)
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| 2012 | |
| Source Publication | Tribology letters
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| ISSN | 1023-8883 |
| Volume | 47Issue:2Pages:183-194 |
| Abstract | In this article, we synthesized the calcium sulphonate grease (CSG) based on the calcite using the bright stock (150BS) as the base oil. In order to investigate the tribological performance of lubricating grease containing different calcium carbonate polymorphs under boundary lubrication condition, a calcium sulphonate complex grease (CSCG) based on the vaterite was used as a reference. An oscillating reciprocating friction and wear tester set at a series of applied loads and frequencies was adopted to evaluate the tribological performance under boundary condition. Results showed that the lubricating grease that was composed of crystalline calcite as the partial thickener had excellent friction-reducing and antiwear (AW) properties, regardless of the applied loads and frequencies. The vaterite in CSCG easily experienced a polymorph transformation into calcite or aragonite characterized by Raman spectroscopy. This polymorph transformation was attributed to the highly local friction temperature and activated hydrogen from water or acids oxidated in the rubbing process at high load or frequency. The physical polymorph transformation corresponded to the fluctuations of the friction coefficients, then contributed to the severe wear. XPS analysis indicated that two calcium sulphonate lubricating greases occurred a tribochemical reaction and boundary tribofilms consisted of CaCO3, CaO, iron oxide and FeSO4 were formed on the rubbing surfaces. The tribofilm formed by the introduction of the CSG that mainly depended upon the thickeners of calcite structure contributed to an excellent AW protection. The possible boundary friction mechanism for greases based on various calcium carbonate polymorphs was also proposed. Effect of calcium carbonate polymorphs on the tribological performance was discussed. |
| Keyword | Calcium Carbonate Polymorphs Boundary Lubrication Tribological Performance Lubricating Grease |
| Subject Area | 材料科学与物理化学 |
| DOI | 10.1007/s11249-012-9976-x |
| Funding Organization | the National 973 Program of China (Grant No. 2011CB706603) |
| Indexed By | SCI |
| If | 1.743 |
| Language | 英语 |
| Funding Project | 工业润滑研究组 |
| compositor | 第一作者单位 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/3501 |
| Collection | 固体润滑国家重点实验室（LSL） |
| Corresponding Author | Wang XB(王晓波) |
| 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 | Liu DB,Zhao GQ,Wang XB,et al. Tribological Performance of Lubricating Greases Based on Calcium Carbonate Polymorphs Under the Boundary Lubrication Condition[J]. Tribology letters,2012,47(2):183-194. |
| APA | Liu DB,Zhao GQ,Wang XB,&王晓波.(2012).Tribological Performance of Lubricating Greases Based on Calcium Carbonate Polymorphs Under the Boundary Lubrication Condition.Tribology letters,47(2),183-194. |
| MLA | Liu DB,et al."Tribological Performance of Lubricating Greases Based on Calcium Carbonate Polymorphs Under the Boundary Lubrication Condition".Tribology letters 47.2(2012):183-194. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 183-194.PDF（1086KB） | 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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