LICP OpenIR  > 固体润滑国家重点实验室(LSL)
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 PublicationVacuum
ISSN0042-207X
Volume137Pages: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.

KeywordVn/ag Film Pulsed Laser Deposition(Pld) Tribological Property Silver Vanadates Lubrication Mechanism
Subject Area材料科学与物理化学
DOI10.1016/j.vacuum.2016.12.020
Funding Organizationthe 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 BySCI
If1.530
Language英语
Funding Project金属润滑材料研究组
compositor第二作者单位
Citation statistics
Cited Times:32[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.licp.cn/handle/362003/21468
Collection固体润滑国家重点实验室(LSL)
Corresponding AuthorJia JH(贾均红)
Affiliation1.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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