Effect of multicomponent doping on the structure and tribological properties of VN-based coatings

被引：17
作者：
Cai, Qun [1 ,2 ]
Li, Shuxin [2 ]
Pu, Jibin [1 ]
Cai, Zhaobing [1 ]
Lu, Xia [1 ]
Cui, Qifen [3 ]
Wang, Liping [1 ]
机构：
[1] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Marine Mat & Related Technol, Zhejiang Key Lab Marine Mat & Protect Technol, Ningbo 315201, Zhejiang, Peoples R China
[2] Ningbo Univ, Fac Mech Engn & Mech, Ningbo 315211, Zhejiang, Peoples R China
[3] China Aerosp Sci & Technol Grp Co Ltd, Inst Aerosp Syst Engn Shanghai, Space Struct & Mech Technol Lab, Shanghai 201100, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2019年 / 806卷
基金：
国家重点研发计划; 中国国家自然科学基金;
关键词：
VN-Based coatings; Mechanical properties; Friction coefficient; Synergistic lubrication; MECHANICAL-PROPERTIES; NANOCOMPOSITE COATINGS; OXIDATION BEHAVIOR; CARBON COATINGS; OXIDE FORMATION; THIN-FILMS; FRICTION; WEAR; SURFACE; TIN;
D O I：
10.1016/j.jallcom.2019.07.274
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The VN-based coatings doped with different elements (carbon, aluminum and silver) were comprehensively investigated in terms of their chemical composition, structure, mechanical properties as well as tribological performance. Results revealed that introduction of aluminum into the coatings can enhance the hardness and modulus of coatings resulting from solution strengthening of Al and the formation of hard AlN phase. The sp(2)-hybrized carbon and VC phases were found in C-doped coatings, playing decisive roles in reducing the friction at room temperature and raising hardness of coatings, respectively. The addition of silver significantly changed the mechanical and high temperature tribological behavior of the coatings owing to their easy-shearing structure. All coatings had the lower friction coefficients at 550 degrees C than those at room temperature. Among them, the friction coefficient of VAlCN-Ag coating is as low as about 0.25 at 550 degrees C, which is closely related to the synergistic lubrication dominated by V2O5 and silver vanadate phases formed by tribochemical reaction on the worn surface, indicating a design of promising self-lubricating VN-based coatings working at high temperature. (C) 2019 Elsevier B.V. All rights reserved.
引用
收藏
页码：566 / 574
页数：9
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