Ultralow Friction and Wear of Polymer Composites under Extreme Unlubricated Sliding Conditions | |
Qi HM(齐慧敏)1,2; Zhang G(张嘎)1; Chang, Li3; Zhao FY(赵福燕)1; Wang TM(王廷梅)1; Wang QH(王齐华)1 | |
刊名 | Advanced Materials Interfaces |
2017 | |
卷号 | 4期号:13 |
关键词 | high-performance composites tribofilms ultralow friction ultralow wear |
ISSN号 | 2196-7350 |
通讯作者 | 张嘎 |
英文摘要 | Dependence of the tribological behaviors of polyimide- and polyetheretherketone-based composites on pv (pressure × speed) factors is investigated in air ambience. It is demonstrated that the hybrid composites filled with nanosilica/carbon fibers/graphite exhibit ultralow friction and wear under extreme conditions. In particular, the friction coefficients of the hybrid nanocomposites at 40 MPa m s−1 are in the range of 0.03–0.04, which are even lower than those obtained with poly alpha olefin lubrication. Moreover, the friction coefficients are lower than those of carbon fibers reinforced polymer composites ever reported in literatures. In order to reveal the underlying mechanisms of ultralow friction and wear, tribochemistry and tribofilms' nanostructures are comprehensively analyzed. It is identified that chelation of polymeric molecular radicals with steel counterface occurs enhancing tribofilm's bonding strength. Striking orientation of the molecules of remnant polymer in tribofilm is indicative that the film exhibits an easy-to-shear characteristic under extreme pv conditions. Nanosilica released onto sliding interface and iron oxide particles abraded from the counterface are thereafter tribosintered into a compact layer, which accounts for the high load-carrying capability of the tribofilm. |
学科主题 | 材料科学与物理化学 |
收录类别 | SCI |
资助信息 | National Natural Science Foundation of China (Grant No. 51475446);Chinese “Thousand Youth Talents Plan” Project |
语种 | 英语 |
WOS记录号 | WOS:000405123200014 |
内容类型 | 期刊论文 |
源URL | [http://210.77.64.217/handle/362003/22105] |
专题 | 兰州化学物理研究所_先进润滑与防护材料研究发展中心 兰州化学物理研究所_固体润滑国家重点实验室 |
作者单位 | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Univ Sydney, Ctr Adv Mat Technol, Sch Aerosp Mech & Mechatron Engn, Sydney, NSW 2006, Australia |
推荐引用方式 GB/T 7714 | Qi HM,Zhang G,Chang, Li,et al. Ultralow Friction and Wear of Polymer Composites under Extreme Unlubricated Sliding Conditions[J]. Advanced Materials Interfaces,2017,4(13). |
APA | Qi HM,Zhang G,Chang, Li,Zhao FY,Wang TM,&Wang QH.(2017).Ultralow Friction and Wear of Polymer Composites under Extreme Unlubricated Sliding Conditions.Advanced Materials Interfaces,4(13). |
MLA | Qi HM,et al."Ultralow Friction and Wear of Polymer Composites under Extreme Unlubricated Sliding Conditions".Advanced Materials Interfaces 4.13(2017). |
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