Microstructures, mechanical and tribological properties of VN films deposited by PLD technique | |
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 | |
刊名 | RSC Advances |
2016 | |
卷号 | 6期号:40页码:33403-33408 |
ISSN号 | 2046-2069 |
通讯作者 | 贾均红 |
英文摘要 | 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. |
学科主题 | 材料科学与物理化学 |
收录类别 | SCI |
资助信息 | 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) |
语种 | 英语 |
WOS记录号 | WOS:000374045000022 |
内容类型 | 期刊论文 |
源URL | [http://210.77.64.217/handle/362003/20002] |
专题 | 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.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.Lanzhou Inst Technol, Lanzhou 730000, Peoples R China |
推荐引用方式 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.,...&Jia JH.(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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