| YAN Jiangshan,GUO Peng,LIN Naiming,ZHANG Yingpeng,MA Guanshui,ZHOU Xiaohui,WANG Rujia,YAN Kai,LI Xiaokai,WANG Aiying.Effect of Double Glow Plasma Surface Alloying Cr Buffer Layer on Mechanical and Tribocorrosion Properties of Graphite-like Carbon Composite Coating[J],53(1):169-181 |
| Effect of Double Glow Plasma Surface Alloying Cr Buffer Layer on Mechanical and Tribocorrosion Properties of Graphite-like Carbon Composite Coating |
| Received:January 03, 2023 Revised:April 28, 2023 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2024.01.016 |
| KeyWord:double glow plasma surface alloying (DGPSA) DC magnetron sputtering (DCMS) graphite-like carbon (GLC) Cr interface layer bonding strength, tribocorrosion |
| Author | Institution |
| YAN Jiangshan |
College of Material Science and Engineering, Taiyuan University of Technology, Taiyuan , China;a.Key Laboratory of Marine Materials and Related Technologies, b.Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Zhejiang Ningbo , China |
| GUO Peng |
a.Key Laboratory of Marine Materials and Related Technologies, b.Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Zhejiang Ningbo , China |
| LIN Naiming |
College of Material Science and Engineering, Taiyuan University of Technology, Taiyuan , China |
| ZHANG Yingpeng |
a.Key Laboratory of Marine Materials and Related Technologies, b.Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Zhejiang Ningbo , China |
| MA Guanshui |
a.Key Laboratory of Marine Materials and Related Technologies, b.Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Zhejiang Ningbo , China |
| ZHOU Xiaohui |
a.Key Laboratory of Marine Materials and Related Technologies, b.Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Zhejiang Ningbo , China |
| WANG Rujia |
a.Key Laboratory of Marine Materials and Related Technologies, b.Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Zhejiang Ningbo , China |
| YAN Kai |
College of Material Science and Engineering, Taiyuan University of Technology, Taiyuan , China |
| LI Xiaokai |
College of Material Science and Engineering, Taiyuan University of Technology, Taiyuan , China |
| WANG Aiying |
a.Key Laboratory of Marine Materials and Related Technologies, b.Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Zhejiang Ningbo , China |
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| Abstract: |
| Due to its excellent chemical stability and high wear and corrosion resistance, graphite-like carbon (GLC) coating is considered as a promising tribocorrosion protective technology for metallic components under harsh marine environment. However, the inadequate adhesion strength can lead to the deposited GLC flaking or peeling off from the substrate. Because of the large mechanical and chemical mismatch between the GLC coating and the metallic substrates, such as 316L stainless steel, which may result in coating failure, especially under heavy bearing loading. Interfacial engineering is one effective strategy to solve the above-mentioned problems for GLC coating. Compared with other common physical vapor deposition methods, double glow plasma surface alloying (DGPSA) technology shows much more advantages for the preparation of buffer layer or interface layer, because its higher incident ion density benefits the formation of adhesive metallurgical layer to improve interfacial adhesion. Although much effort has been devoted to the effect of DGPSA process on the mechanical and tribological behavior of some surface modification layers, little is known about the role of Cr buffer layer prepared by DGPSA on the interfacial adhesion and tribocorrosion behavior of GLC coating. In this work, Cr interface layer was selected and introduced onto 316L substrate by DGPSA process, where the subsequent GLC coating as top layer was deposited by DC magnetron sputtering (DCMS) system. The microstructure, mechanical properties, interfacial adhesion and tribocorrosion behavior of GLC coating on the DGPSA-Cr layer were investigated. Scanning electron microscopy (SEM), confocal microscopic Raman spectrometer (Raman) and X-ray diffractometer (XRD) were used to characterize the microstructure, chemical composition and surface morphology of the coating. Scratch testing system, nano-indenter and ball on disc reciprocating friction were employed to test the interfacial adhesion strength and the mechanical and tribocorrosion properties of GLC coating, respectively. The results showed that the Cr interface layer by DGPSA method promoted the graphitization of top GLC coating. Meanwhile, even there was a great hardness difference of 14.42 GPa between GLC coating and 316L substrate, Cr/GLC composite coating exhibited the gradient transition of hardness (3.65 GPa for substrate, 8.97 GPa for Cr interface layer and 13.15 GPa for surface), which thereafter improved the bearing capacity and fracture toughness of coating. The enhanced interfacial bonding characteristics might be attributed to the synergistic effect of the formed metallurgical bonding between Cr interface layer and 316L substrate, as well as the interlocked structure between Cr interface layer and the top GLC coating. As a result, the Cr/GLC composite coating showed the higher critical load (≥50 N), low coefficient of friction (COF:0.055) and wear rate (3.22× 10–7 mm3.N–1.m–1). Specially, the wear rate of Cr/GLC composite coating was reduced by 98.27% and 46.86%, compared with those of 316L substrate and pure GLC coating without buffer layer, respectively. In addition, the Cr/GLC composite coating exhibited the excellent tribocorrosion resistance in 3.5 wt.% NaCl solution, where the graphitization transfer films were formed between Cr/GLC composite coating and Si3N4 counterpart ball. Therefore, the Cr/GLC composite coating with Cr buffer layer by DGPSA process and GLC prepared by DCMS technologies shows the excellent mechanical loading capability and tribocorrosion resistance for metallic 316L substrate, which can bring forward the promising protective coating strategy for friction components used in harsh marine environment. |
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