Comparative Study on the Corrosion Resistance of 6061Al and SiC<sub>3D</sub>/6061Al Composite in a Chloride Environment
Interface problems and the destruction of the continuity of the oxide film in the Al matrix usually reduce the corrosion resistance of the material. In this paper, the corrosion resistance of Al matrix composites (AMCs) was improved by introducing the silicon carbide skeletons (SiC<sub>3D</...
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2021-12-01
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| Online Access: | https://www.mdpi.com/1996-1944/14/24/7730 |
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| author | Liang Yu Shuangshuang Hao Xiaodong Nong Xiuling Cao Chen Zhang Yuan Liu Yulong Yan Yanli Jiang |
| author_facet | Liang Yu Shuangshuang Hao Xiaodong Nong Xiuling Cao Chen Zhang Yuan Liu Yulong Yan Yanli Jiang |
| author_sort | Liang Yu |
| collection | DOAJ |
| description | Interface problems and the destruction of the continuity of the oxide film in the Al matrix usually reduce the corrosion resistance of the material. In this paper, the corrosion resistance of Al matrix composites (AMCs) was improved by introducing the silicon carbide skeletons (SiC<sub>3D</sub>) obtained with polymer replica technology. SiC<sub>3D</sub>/6061Al was fabricated by infiltrating molten 6061Al alloy in the oxidized SiC<sub>3D</sub> using the low-pressure casting method. The corrosion resistance performances of 6061Al and SiC<sub>3D</sub>/6061Al in NaCl solution were studied by electrochemical, neutral salt spray corrosion (NSS), and salt leaching (SL) tests. Results show corrosion resistance of SiC<sub>3D</sub>/6061Al is higher than that of 6061Al alloys by open circuit potential (OCP), potentio-dynamic polarization (PDP), and electrochemical impedance spectroscopy (EIS) tests. However, NSS and SL tests show the corrosion resistance of SiC<sub>3D</sub>/6061Al is lower than that of 6061Al alloy. The reason is a corrosion resistant and anti-oxidation network macrostructure with large interface recombination, few concentrated interfaces, and a small specific area that formed in SiC<sub>3D</sub>/6061Al. SiC<sub>3D</sub> cannot damage the continuity of the Al<sub>2</sub>O<sub>3</sub> passivating film, and the network macrostructure greatly improves the corrosion resistance performance. |
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| id | doaj.art-0332b6fba32e44e3a4017c6382ea1826 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T03:38:42Z |
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| spelling | doaj.art-0332b6fba32e44e3a4017c6382ea18262023-11-23T09:22:11ZengMDPI AGMaterials1996-19442021-12-011424773010.3390/ma14247730Comparative Study on the Corrosion Resistance of 6061Al and SiC<sub>3D</sub>/6061Al Composite in a Chloride EnvironmentLiang Yu0Shuangshuang Hao1Xiaodong Nong2Xiuling Cao3Chen Zhang4Yuan Liu5Yulong Yan6Yanli Jiang7Key Laboratory of New Processing Technology for Nonferrous Metals & Materials, Guilin University of Technology, Guilin 541004, ChinaKey Laboratory of New Processing Technology for Nonferrous Metals & Materials, Guilin University of Technology, Guilin 541004, ChinaJihua Laboratory, Foshan 528200, ChinaHebei Technology Innovation Center for Intelligent Development and Control of Underground Built Environment, School of Exploration Technology and Engineering, Hebei Geosciences University, Shijiazhuang 050031, ChinaKey Laboratory of New Processing Technology for Nonferrous Metals & Materials, Guilin University of Technology, Guilin 541004, ChinaKey Laboratory of New Processing Technology for Nonferrous Metals & Materials, Guilin University of Technology, Guilin 541004, ChinaKey Laboratory of New Processing Technology for Nonferrous Metals & Materials, Guilin University of Technology, Guilin 541004, ChinaKey Laboratory of New Processing Technology for Nonferrous Metals & Materials, Guilin University of Technology, Guilin 541004, ChinaInterface problems and the destruction of the continuity of the oxide film in the Al matrix usually reduce the corrosion resistance of the material. In this paper, the corrosion resistance of Al matrix composites (AMCs) was improved by introducing the silicon carbide skeletons (SiC<sub>3D</sub>) obtained with polymer replica technology. SiC<sub>3D</sub>/6061Al was fabricated by infiltrating molten 6061Al alloy in the oxidized SiC<sub>3D</sub> using the low-pressure casting method. The corrosion resistance performances of 6061Al and SiC<sub>3D</sub>/6061Al in NaCl solution were studied by electrochemical, neutral salt spray corrosion (NSS), and salt leaching (SL) tests. Results show corrosion resistance of SiC<sub>3D</sub>/6061Al is higher than that of 6061Al alloys by open circuit potential (OCP), potentio-dynamic polarization (PDP), and electrochemical impedance spectroscopy (EIS) tests. However, NSS and SL tests show the corrosion resistance of SiC<sub>3D</sub>/6061Al is lower than that of 6061Al alloy. The reason is a corrosion resistant and anti-oxidation network macrostructure with large interface recombination, few concentrated interfaces, and a small specific area that formed in SiC<sub>3D</sub>/6061Al. SiC<sub>3D</sub> cannot damage the continuity of the Al<sub>2</sub>O<sub>3</sub> passivating film, and the network macrostructure greatly improves the corrosion resistance performance.https://www.mdpi.com/1996-1944/14/24/7730SiC<sub>3D</sub>/6061Al compositecorrosionCl<sup>−</sup>electrochemistrysalt spray test |
| spellingShingle | Liang Yu Shuangshuang Hao Xiaodong Nong Xiuling Cao Chen Zhang Yuan Liu Yulong Yan Yanli Jiang Comparative Study on the Corrosion Resistance of 6061Al and SiC<sub>3D</sub>/6061Al Composite in a Chloride Environment Materials SiC<sub>3D</sub>/6061Al composite corrosion Cl<sup>−</sup> electrochemistry salt spray test |
| title | Comparative Study on the Corrosion Resistance of 6061Al and SiC<sub>3D</sub>/6061Al Composite in a Chloride Environment |
| title_full | Comparative Study on the Corrosion Resistance of 6061Al and SiC<sub>3D</sub>/6061Al Composite in a Chloride Environment |
| title_fullStr | Comparative Study on the Corrosion Resistance of 6061Al and SiC<sub>3D</sub>/6061Al Composite in a Chloride Environment |
| title_full_unstemmed | Comparative Study on the Corrosion Resistance of 6061Al and SiC<sub>3D</sub>/6061Al Composite in a Chloride Environment |
| title_short | Comparative Study on the Corrosion Resistance of 6061Al and SiC<sub>3D</sub>/6061Al Composite in a Chloride Environment |
| title_sort | comparative study on the corrosion resistance of 6061al and sic sub 3d sub 6061al composite in a chloride environment |
| topic | SiC<sub>3D</sub>/6061Al composite corrosion Cl<sup>−</sup> electrochemistry salt spray test |
| url | https://www.mdpi.com/1996-1944/14/24/7730 |
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