Microstructures, mechanical and tribological properties of VN films deposited by PLD technique | |
Department | 固体润滑国家重点实验室 |
Guo HJ(国洪建)1,2,3; Li, Bo1; Wang JY(汪建义)1,2; Chen WY(陈文元)1,2; Zhang, Zhenyu3; Wang WZ(王文珍)1; Jia JH(贾均红)1; Jia JH(贾均红) | |
2016 | |
Source Publication | RSC Advances |
ISSN | 2046-2069 |
Volume | 6Issue:40Pages:33403-33408 |
Abstract | Consistent stoichiometric FCC structured vanadium nitride (VN) films were fabricated by the pulsed laser deposition (PLD) technique at room temperature and 300 °C, for which the microstructures and mechanical and tribological properties were systematically investigated. The results indicated that the films deposited at 300 °C displayed a denser structure and possessed higher hardness and elastic modulus values than the films deposited at room temperature that exhibited a columnar structure. The wear behaviors of VN films were investigated at elevated temperature to 900 °C against an alumina ball under an ambient atmosphere. Due to the densified structure and excellent mechanical properties, the VN films deposited at 300 °C held lower friction coefficients over the investigated temperature range compared to those of the films deposited at room temperature and registered the lowest friction coefficient of about 0.21 at 900 °C. According to the XRD and Raman spectroscopy results, the oxidation behaviors of VN films at elevated temperatures formed a series of vanadium oxides, such as V2O5, V3O7, V6O11 and V6O13, which displayed easy crystallographic shear planes with reduced binding strength and influenced the tribological properties significantly. Moreover, liquid self-lubrication existed in the tribology process above 700 °C due to the melting of V2O5 that registered low melting points of 680 °C. Combining the vanadium oxides phase and lubrication phases with the lubricious oxide layer, as well as the liquid lubrication in the contact area, can cause decreased friction coefficients at higher temperatures. |
Subject Area | 材料科学与物理化学 |
DOI | 10.1039/c6ra02403c |
Funding Organization | the National Natural Science Foundation of China (Grant No. 51471181);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 Longyuan young Creative Talents (Grant No. 2015GS06462) |
Indexed By | SCI |
If | 3.108 |
Language | 英语 |
Funding Project | 高温抗磨材料组 |
compositor | 第一作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/20002 |
Collection | 固体润滑国家重点实验室(LSL) |
Corresponding Author | Jia JH(贾均红) |
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 100049, Peoples R China 3.Lanzhou Inst Technol, Lanzhou 730000, Peoples R China |
Recommended Citation GB/T 7714 | Guo HJ,Li, Bo,Wang JY,et al. Microstructures, mechanical and tribological properties of VN films deposited by PLD technique[J]. RSC Advances,2016,6(40):33403-33408. |
APA | Guo HJ.,Li, Bo.,Wang JY.,Chen WY.,Zhang, Zhenyu.,...&贾均红.(2016).Microstructures, mechanical and tribological properties of VN films deposited by PLD technique.RSC Advances,6(40),33403-33408. |
MLA | Guo HJ,et al."Microstructures, mechanical and tribological properties of VN films deposited by PLD technique".RSC Advances 6.40(2016):33403-33408. |
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