Research on the Corrosion Behaviors of L245 Steel and Ni-W Alloy Coating in Alkaline Sodium Sulfide Solution
During the exploitation and transportation of natural gas and petroleum, the sulfur content in the precipitated water is getting higher and higher, which could cause severe corrosion of the carbon steel joints in the gathering pipeline. In order to improve the corrosion resistance of steel substrate...
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| Language: | zho |
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Editorial Department of Materials Protection
2021-02-01
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| Series: | Cailiao Baohu |
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| Online Access: | http://www.mat-pro.com/fileup/1001-1560/PDF/20210209.pdf |
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| author | CAO Bo-yuan, LI Rong, CHENG Kai, WANG Yao-hui, LIU Gao-jian, LIANG Yong-ren |
| author_facet | CAO Bo-yuan, LI Rong, CHENG Kai, WANG Yao-hui, LIU Gao-jian, LIANG Yong-ren |
| author_sort | CAO Bo-yuan, LI Rong, CHENG Kai, WANG Yao-hui, LIU Gao-jian, LIANG Yong-ren |
| collection | DOAJ |
| description | During the exploitation and transportation of natural gas and petroleum, the sulfur content in the precipitated water is getting higher and higher, which could cause severe corrosion of the carbon steel joints in the gathering pipeline. In order to improve the corrosion resistance of steel substrate and extend the service life of connector, a Ni-W coating was prepared on the carbon steel connecting piece by electroplating method for improving the corrosion resistance of the carbon steel connecting piece. The corrosion behavior of Ni-W coating and L245 steel in the environment containing Na2S simulated production water was studied by immersion method and electrochemical method. Furthermore, the surface morphology, composition and structure of the corrosion products of Ni-W coating and L245 steel were compared and analyzed by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD). Results showed that the sulfur ions could accelerate the corrosion of L245 steel, and the Ni-W alloy coating would effectively improve the corrosion resistance of L245 steel in a sulfur-containing solution. When the sulfur ion concentration was 0.005 0 mol/L, the OH- generated from the sulfur ion hydrolysis reaction was adsorbed on the surface of the passivation film, which reduced the corrosion of the Ni-W coating. |
| format | Article |
| id | doaj-art-019bfc052d6f40399ef9905211868c2b |
| institution | Kabale University |
| issn | 1001-1560 |
| language | zho |
| publishDate | 2021-02-01 |
| publisher | Editorial Department of Materials Protection |
| record_format | Article |
| series | Cailiao Baohu |
| spelling | doaj-art-019bfc052d6f40399ef9905211868c2b2025-08-20T03:50:07ZzhoEditorial Department of Materials ProtectionCailiao Baohu1001-15602021-02-01542556410.16577/j.cnki.42-1215/tb.2021.02.010Research on the Corrosion Behaviors of L245 Steel and Ni-W Alloy Coating in Alkaline Sodium Sulfide SolutionCAO Bo-yuan, LI Rong, CHENG Kai, WANG Yao-hui, LIU Gao-jian, LIANG Yong-ren0(Western BaoDe Technologies Co., Ltd., Xi’an 710201, China)During the exploitation and transportation of natural gas and petroleum, the sulfur content in the precipitated water is getting higher and higher, which could cause severe corrosion of the carbon steel joints in the gathering pipeline. In order to improve the corrosion resistance of steel substrate and extend the service life of connector, a Ni-W coating was prepared on the carbon steel connecting piece by electroplating method for improving the corrosion resistance of the carbon steel connecting piece. The corrosion behavior of Ni-W coating and L245 steel in the environment containing Na2S simulated production water was studied by immersion method and electrochemical method. Furthermore, the surface morphology, composition and structure of the corrosion products of Ni-W coating and L245 steel were compared and analyzed by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD). Results showed that the sulfur ions could accelerate the corrosion of L245 steel, and the Ni-W alloy coating would effectively improve the corrosion resistance of L245 steel in a sulfur-containing solution. When the sulfur ion concentration was 0.005 0 mol/L, the OH- generated from the sulfur ion hydrolysis reaction was adsorbed on the surface of the passivation film, which reduced the corrosion of the Ni-W coating.http://www.mat-pro.com/fileup/1001-1560/PDF/20210209.pdfl245 steel; sulfur ion; electrochemical corrosion; ni-w coatings |
| spellingShingle | CAO Bo-yuan, LI Rong, CHENG Kai, WANG Yao-hui, LIU Gao-jian, LIANG Yong-ren Research on the Corrosion Behaviors of L245 Steel and Ni-W Alloy Coating in Alkaline Sodium Sulfide Solution Cailiao Baohu l245 steel; sulfur ion; electrochemical corrosion; ni-w coatings |
| title | Research on the Corrosion Behaviors of L245 Steel and Ni-W Alloy Coating in Alkaline Sodium Sulfide Solution |
| title_full | Research on the Corrosion Behaviors of L245 Steel and Ni-W Alloy Coating in Alkaline Sodium Sulfide Solution |
| title_fullStr | Research on the Corrosion Behaviors of L245 Steel and Ni-W Alloy Coating in Alkaline Sodium Sulfide Solution |
| title_full_unstemmed | Research on the Corrosion Behaviors of L245 Steel and Ni-W Alloy Coating in Alkaline Sodium Sulfide Solution |
| title_short | Research on the Corrosion Behaviors of L245 Steel and Ni-W Alloy Coating in Alkaline Sodium Sulfide Solution |
| title_sort | research on the corrosion behaviors of l245 steel and ni w alloy coating in alkaline sodium sulfide solution |
| topic | l245 steel; sulfur ion; electrochemical corrosion; ni-w coatings |
| url | http://www.mat-pro.com/fileup/1001-1560/PDF/20210209.pdf |
| work_keys_str_mv | AT caoboyuanlirongchengkaiwangyaohuiliugaojianliangyongren researchonthecorrosionbehaviorsofl245steelandniwalloycoatinginalkalinesodiumsulfidesolution |