Developing Improved Corrosion-Resistant AA5083—BN/WC Composites for Tribological Applications
In this study, corrosion-resistant AA5083—BN/WC composites were developed for tribological applications through adequate control of the reinforcement content (WC and BN) in the matrix (AA5083 alloy). The effects of 6% and 12% tungsten carbide (WC) as well as 6% and 12% boron nitride (BN) additions o...
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MDPI AG
2023-02-01
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| author | Hany R. Ammar Elsayed M. Sherif Subbarayan Sivasankaran Fahad A. Almufadi Abdel-baset H. Mekky |
| author_facet | Hany R. Ammar Elsayed M. Sherif Subbarayan Sivasankaran Fahad A. Almufadi Abdel-baset H. Mekky |
| author_sort | Hany R. Ammar |
| collection | DOAJ |
| description | In this study, corrosion-resistant AA5083—BN/WC composites were developed for tribological applications through adequate control of the reinforcement content (WC and BN) in the matrix (AA5083 alloy). The effects of 6% and 12% tungsten carbide (WC) as well as 6% and 12% boron nitride (BN) additions on the corrosion behavior of AA5083 aluminum composite in 3.5% NaCl solution were carried out. Electrochemical techniques such as cyclic potentiodynamic polarization (CPP), changes in the chronoamperometric current with time (CCT), and electrochemical impedance spectroscopy (EIS) were utilized. The polarization results showed that the addition of 6% WC to the AA5083 alloy matrix improved its resistance to corrosion (R<sub>P</sub>). Rp exhibited an additional increase by adding 12% WC to the matrix. The values of R<sub>P</sub> were observed to increase for the AA5083 composite when adding 6% BN, and the highest R<sub>P</sub> values were recorded for the composite that contains 12% BN. The results obtained by the CPP method were confirmed by CCT and EIS measurements, where the presence of WC and BN protected the developed AA5083- BN/WC composites against corrosion. The corrosion resistance revealed an additional improvement with an increase in WC and BN content from 6% to 12%. The results also confirm that pitting corrosion decreased in the presence of WC and BN in the fabricated composites. |
| first_indexed | 2024-03-11T08:29:51Z |
| format | Article |
| id | doaj.art-daaa4b76ac5b41689dbcd44882f914cd |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T08:29:51Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-daaa4b76ac5b41689dbcd44882f914cd2023-11-16T21:52:48ZengMDPI AGMaterials1996-19442023-02-01164166310.3390/ma16041663Developing Improved Corrosion-Resistant AA5083—BN/WC Composites for Tribological ApplicationsHany R. Ammar0Elsayed M. Sherif1Subbarayan Sivasankaran2Fahad A. Almufadi3Abdel-baset H. Mekky4Department of Mechanical Engineering, College of Engineering, Qassim University, Buraydah 51452, Saudi ArabiaCenter of Excellence for Research in Engineering Materials (CEREM), Deanship of Scientific Research, King Saud University, Riyadh 11421, Saudi ArabiaDepartment of Mechanical Engineering, College of Engineering, Qassim University, Buraydah 51452, Saudi ArabiaDepartment of Mechanical Engineering, College of Engineering, Qassim University, Buraydah 51452, Saudi ArabiaDepartment of Physics, College of Science and Arts El-Meznab, Qassim University, Buraydah 51931, Saudi ArabiaIn this study, corrosion-resistant AA5083—BN/WC composites were developed for tribological applications through adequate control of the reinforcement content (WC and BN) in the matrix (AA5083 alloy). The effects of 6% and 12% tungsten carbide (WC) as well as 6% and 12% boron nitride (BN) additions on the corrosion behavior of AA5083 aluminum composite in 3.5% NaCl solution were carried out. Electrochemical techniques such as cyclic potentiodynamic polarization (CPP), changes in the chronoamperometric current with time (CCT), and electrochemical impedance spectroscopy (EIS) were utilized. The polarization results showed that the addition of 6% WC to the AA5083 alloy matrix improved its resistance to corrosion (R<sub>P</sub>). Rp exhibited an additional increase by adding 12% WC to the matrix. The values of R<sub>P</sub> were observed to increase for the AA5083 composite when adding 6% BN, and the highest R<sub>P</sub> values were recorded for the composite that contains 12% BN. The results obtained by the CPP method were confirmed by CCT and EIS measurements, where the presence of WC and BN protected the developed AA5083- BN/WC composites against corrosion. The corrosion resistance revealed an additional improvement with an increase in WC and BN content from 6% to 12%. The results also confirm that pitting corrosion decreased in the presence of WC and BN in the fabricated composites.https://www.mdpi.com/1996-1944/16/4/1663AA5083-matrix compositetungsten carbide (WC)boron nitride (BN)corrosion passivationchloride solutionselectrochemical methods |
| spellingShingle | Hany R. Ammar Elsayed M. Sherif Subbarayan Sivasankaran Fahad A. Almufadi Abdel-baset H. Mekky Developing Improved Corrosion-Resistant AA5083—BN/WC Composites for Tribological Applications Materials AA5083-matrix composite tungsten carbide (WC) boron nitride (BN) corrosion passivation chloride solutions electrochemical methods |
| title | Developing Improved Corrosion-Resistant AA5083—BN/WC Composites for Tribological Applications |
| title_full | Developing Improved Corrosion-Resistant AA5083—BN/WC Composites for Tribological Applications |
| title_fullStr | Developing Improved Corrosion-Resistant AA5083—BN/WC Composites for Tribological Applications |
| title_full_unstemmed | Developing Improved Corrosion-Resistant AA5083—BN/WC Composites for Tribological Applications |
| title_short | Developing Improved Corrosion-Resistant AA5083—BN/WC Composites for Tribological Applications |
| title_sort | developing improved corrosion resistant aa5083 bn wc composites for tribological applications |
| topic | AA5083-matrix composite tungsten carbide (WC) boron nitride (BN) corrosion passivation chloride solutions electrochemical methods |
| url | https://www.mdpi.com/1996-1944/16/4/1663 |
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