Microstructure and properties of VN/Ag composite films with various silver content | |
Department | 固体润滑国家重点实验室 |
Guo HJ(国洪建)1,2,3; Han MM(韩敏敏)2,3; Chen WY(陈文元)2; Lu, Cheng2,3; Li B(李波)2; Wang WZ(王文珍)2; Jia JH(贾均红)2; Jia JH(贾均红) | |
2017 | |
Source Publication | Vacuum |
ISSN | 0042-207X |
Volume | 137Pages:97-103 |
Abstract | The VN/Ag composite films with various silver content were prepared by PLD technique, and the microstructures, mechanical and tribological properties at elevated temperature to 900 °C of films were investigated, respectively. The results show that the films were composed of the fcc VN and Ag nano-crystalline grains. With the increase of silver content from 8.2 to 56.1 at.%, the grain size increased and the surface morphology deteriorated gradually, the hardness and elastic modulus of the films decreased from 18.6 GPa, 226.3 GPa–8.1 GPa, 126.6 GPa, respectively. Only appropriate silver addition could improve the lubricity of the VN/Ag films. The film with 16.6 at.% Ag were found to be optimized for lubrication from RT to 900 °C. At low temperatures, the lubricant property of the film relied on the metal silver heavily. At elevated temperatures, a series of Magnéli phase (vanadium oxides) and the layered structure silver vanadates (such as Ag3VO4, AgVO3) formed by tribochemical reactions in the contact area played a critical role in improving lubrication properties. A synergy of the lubricating Ag at low temperatures and the new lubrication phases generated at high temperatures could be responsible to the excellent lubricity of the VN/Ag films in wide temperature range. |
Keyword | Vn/ag Film Pulsed Laser Deposition(Pld) Tribological Property Silver Vanadates Lubrication Mechanism |
Subject Area | 材料科学与物理化学 |
DOI | 10.1016/j.vacuum.2016.12.020 |
Funding Organization | the National Natural Science Foundation of China (Grant No. 51665026;51675508);National Defense Science and Technology Innovation Foundation of Chinese Academy of Sciences (Grant No. CXJJ-14-M39);the Young Science and Technology Foundation of Gansu Province (Grant No. 1506RJYA058);the Project of Gansu Province Longyuan young Creative Talents (Grant No. 2015GS06462) in China |
Indexed By | SCI |
If | 1.530 |
Language | 英语 |
Funding Project | 金属润滑材料研究组 |
compositor | 第二作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/21468 |
Collection | 固体润滑国家重点实验室(LSL) |
Corresponding Author | Jia JH(贾均红) |
Affiliation | 1.Lanzhou Inst Technol, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
Recommended Citation GB/T 7714 | Guo HJ,Han MM,Chen WY,et al. Microstructure and properties of VN/Ag composite films with various silver content[J]. Vacuum,2017,137:97-103. |
APA | Guo HJ.,Han MM.,Chen WY.,Lu, Cheng.,Li B.,...&贾均红.(2017).Microstructure and properties of VN/Ag composite films with various silver content.Vacuum,137,97-103. |
MLA | Guo HJ,et al."Microstructure and properties of VN/Ag composite films with various silver content".Vacuum 137(2017):97-103. |
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