KMS Chongqing Institute of Green and Intelligent Technology, CAS
Microstructure and properties of nitrogen ion implantation/AlN/CrAlN/MoS2-phenolic resin duplex coatings on magnesium alloys | |
Xie, Zhiwen1,3; Chen, Qiang2; Chen, Tian3; Gao, Xu1; Yu, Xiaoguang1; Song, Hua1; Feng, Yongjun1 | |
2015-06-15 | |
摘要 | The novel nitrogen ion implantation/AlN/CrAIN/MoS2-phenolic resin duplex coatings are fabricated on the AM60 magnesium alloys. The microstructure, tribological and electrochemical properties of the duplex coatings are characterized by X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, Fourier transform infrared spectroscopy, Raman spectroscopy, nano-indenter, electrochemical corrosion and wear tester. These studies reveal that the MoS2-phenolic resin coating has a two-phase microstructure crystalline MoS2 particles embedded in the amorphous phenolic resin matrix. The single-layer MoS2-phenolic resin enhances the corrosion resistance of magnesium alloys, but shows poor wear resistance due to the low substrate's load bearing capacity. The addition of nitrogen ion implantation/AlN/CrAlN interlayer in the MoS2-phenolic resin/substrate system greatly enhances the substrate's load bearing capacity. The AlN/CrAlN/MoS2-phenolic resin duplex coating with a high load bearing capacity demonstrates super wear resistance (i.e., long wear life and low friction coefficient). In addition, the nitrogen ion implantation/AlN interlayer greatly depresses the effect of galvanic corrosion because its potential is close to that of the magnesium alloys, but the nitrogen ion implantation/AlN/CrAlN interlayer is inefficient in reducing the galvanic corrosion due to the large potential difference between the CrN phase and the substrate. As a result, the nitrogen ion implantation/AlN/MoS2-phenolic resin duplex coating shows a better corrosion resistance compared to the nitrogen ion implantation/AlN/CrAlN/MoS2-phenolic resin. (C) 2015 Elsevier B.V. All rights reserved. |
关键词 | Metals Coatings Tribology And Wear Corrosion |
DOI | 10.1016/j.matchemphys.2015.04.026 |
发表期刊 | MATERIALS CHEMISTRY AND PHYSICS |
ISSN | 0254-0584 |
卷号 | 160页码:212-220 |
收录类别 | SCI |
WOS记录号 | WOS:000356210200027 |
语种 | 英语 |