Microstructural and tribological characterization of NiAI matrix self-lubricating composite coatings by atmospheric plasma spraying | |
Department | 固体润滑国家重点实验室 |
Li, Bo(李博)1,2; Jia JH(贾均红)1; Gao, Yimin2; Han MM(韩敏敏)1; Wang WZ(王文珍)1; Jia JH(贾均红) | |
2017 | |
Source Publication | Tribology International |
ISSN | 0301-679X |
Volume | 109Pages:563-570 |
Abstract | The NiAl-Mo-Ag and NiAl-Cr2O3-Mo-Ag composite coatings were fabricated by atmospheric plasma spraying with the substrate material of Inconel 718. The effect of heat treatment on the microstructure, adhesive strength, microhardness and tribological properties of NiAl-Cr2O3-Mo-Ag composite coating was investigated. The heat treatment temperatures were chosen as 400, 500 and 600 °C. The composition and microstructure of composite coatings were analyzed by X-ray diffraction (XRD), scanning election microscopy (SEM) and transmission electron microscopy (TEM). The results show that the addition of Cr2O3 could effectively reduce the wear rate of NiAl-Mo-Ag composite coating. The adhesive strength, microhardness and tribological properties of NiAl-Cr2O3-Mo-Ag composite coating were improved by heat treatment. After 500 °C heat treatment, the microstructure of composite coating became more homogeneous and the coating had the highest adhesive strength, microhardness and the best tribological properties. The sliding process could promote the silver, nickel and molybdenum occur tribo-chemical reaction to form silver molybdates and nickel molybdates lubricating films which were responsible for the good tribological properties of composite coatings at elevated temperatures. |
Keyword | Atmospheric Plasma Spraying Elevated Temperature Heat Treatment Adhesive Strength Tribological Properties |
Subject Area | 材料科学与物理化学 |
DOI | 10.1016/j.triboint.2017.01.031 |
Funding Organization | the National Natural Science Foundation of China (Grant Nos. 51575505;51471181;51675508) |
Indexed By | SCI |
If | 2.903 |
Language | 英语 |
Funding Project | 金属润滑材料研究组 |
compositor | 第一作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/21733 |
Collection | 固体润滑国家重点实验室(LSL) |
Corresponding Author | Gao, Yimin; Jia JH(贾均红) |
Affiliation | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou, Peoples R China 2.Xi An Jiao Tong Univ, Sch Mat Sci & Engn, State Key Lab Mech Behav Mat, Xian, Peoples R China |
Recommended Citation GB/T 7714 | Li, Bo,Jia JH,Gao, Yimin,et al. Microstructural and tribological characterization of NiAI matrix self-lubricating composite coatings by atmospheric plasma spraying[J]. Tribology International,2017,109:563-570. |
APA | Li, Bo,Jia JH,Gao, Yimin,Han MM,Wang WZ,&贾均红.(2017).Microstructural and tribological characterization of NiAI matrix self-lubricating composite coatings by atmospheric plasma spraying.Tribology International,109,563-570. |
MLA | Li, Bo,et al."Microstructural and tribological characterization of NiAI matrix self-lubricating composite coatings by atmospheric plasma spraying".Tribology International 109(2017):563-570. |
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