Influence of Different Aqueous Media on the Corrosion Behavior of B<sub>4</sub>C-Modified Lightweight Al-Mg-Si Matrix Composites
In this study, we have investigated the electrochemical corrosion behavior of boron carbide (B<sub>4</sub>C) ceramic-reinforced Al-Mg-Si matrix composites in various aqueous environments (NaOH, NaCl, HCl, and H<sub>2</sub>SO<sub>4</sub>). The samples were produced...
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MDPI AG
2022-11-01
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| Online Access: | https://www.mdpi.com/1996-1944/15/23/8531 |
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| author | Neeraj Kumar Ashutosh Sharma Manoranjan Kumar Manoj |
| author_facet | Neeraj Kumar Ashutosh Sharma Manoranjan Kumar Manoj |
| author_sort | Neeraj Kumar |
| collection | DOAJ |
| description | In this study, we have investigated the electrochemical corrosion behavior of boron carbide (B<sub>4</sub>C) ceramic-reinforced Al-Mg-Si matrix composites in various aqueous environments (NaOH, NaCl, HCl, and H<sub>2</sub>SO<sub>4</sub>). The samples were produced by the powder metallurgy (P/M) route and the corrosion investigations were conducted by potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS) methods. The morphology of the as-prepared and corroded samples was examined by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) studies. The investigations revealed that the corrosion resistance of Al-Mg-Si composites is highest in NaCl medium due to a less negative corrosion potential, higher charge transfer (R<sub>ct</sub>) resistance, and lower double-layer capacitance (C<sub>dl</sub>) as compared to other media. The SEM morphology suggests that B<sub>4</sub>C ceramics enhance corrosion resistance by forming a protective barrier layer of OH- and Cl- deposits in the composite and unreinforced alloy, respectively. |
| first_indexed | 2024-03-09T17:41:29Z |
| format | Article |
| id | doaj.art-3f0574a6a727495fba7f21780629b7a6 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T17:41:29Z |
| publishDate | 2022-11-01 |
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| spelling | doaj.art-3f0574a6a727495fba7f21780629b7a62023-11-24T11:29:52ZengMDPI AGMaterials1996-19442022-11-011523853110.3390/ma15238531Influence of Different Aqueous Media on the Corrosion Behavior of B<sub>4</sub>C-Modified Lightweight Al-Mg-Si Matrix CompositesNeeraj Kumar0Ashutosh Sharma1Manoranjan Kumar Manoj2Metallurgical and Materials Engineering, National Institute of Technology (NIT), Raipur 492010, IndiaDepartment of Materials Science and Engineering, Ajou University, Suwon 16499, Republic of KoreaMetallurgical and Materials Engineering, National Institute of Technology (NIT), Raipur 492010, IndiaIn this study, we have investigated the electrochemical corrosion behavior of boron carbide (B<sub>4</sub>C) ceramic-reinforced Al-Mg-Si matrix composites in various aqueous environments (NaOH, NaCl, HCl, and H<sub>2</sub>SO<sub>4</sub>). The samples were produced by the powder metallurgy (P/M) route and the corrosion investigations were conducted by potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS) methods. The morphology of the as-prepared and corroded samples was examined by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) studies. The investigations revealed that the corrosion resistance of Al-Mg-Si composites is highest in NaCl medium due to a less negative corrosion potential, higher charge transfer (R<sub>ct</sub>) resistance, and lower double-layer capacitance (C<sub>dl</sub>) as compared to other media. The SEM morphology suggests that B<sub>4</sub>C ceramics enhance corrosion resistance by forming a protective barrier layer of OH- and Cl- deposits in the composite and unreinforced alloy, respectively.https://www.mdpi.com/1996-1944/15/23/8531corrosionpowder metallurgymetal matrix composite (MMC)ceramicsaluminum alloys |
| spellingShingle | Neeraj Kumar Ashutosh Sharma Manoranjan Kumar Manoj Influence of Different Aqueous Media on the Corrosion Behavior of B<sub>4</sub>C-Modified Lightweight Al-Mg-Si Matrix Composites Materials corrosion powder metallurgy metal matrix composite (MMC) ceramics aluminum alloys |
| title | Influence of Different Aqueous Media on the Corrosion Behavior of B<sub>4</sub>C-Modified Lightweight Al-Mg-Si Matrix Composites |
| title_full | Influence of Different Aqueous Media on the Corrosion Behavior of B<sub>4</sub>C-Modified Lightweight Al-Mg-Si Matrix Composites |
| title_fullStr | Influence of Different Aqueous Media on the Corrosion Behavior of B<sub>4</sub>C-Modified Lightweight Al-Mg-Si Matrix Composites |
| title_full_unstemmed | Influence of Different Aqueous Media on the Corrosion Behavior of B<sub>4</sub>C-Modified Lightweight Al-Mg-Si Matrix Composites |
| title_short | Influence of Different Aqueous Media on the Corrosion Behavior of B<sub>4</sub>C-Modified Lightweight Al-Mg-Si Matrix Composites |
| title_sort | influence of different aqueous media on the corrosion behavior of b sub 4 sub c modified lightweight al mg si matrix composites |
| topic | corrosion powder metallurgy metal matrix composite (MMC) ceramics aluminum alloys |
| url | https://www.mdpi.com/1996-1944/15/23/8531 |
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