Influence of Heat Treatment on the Corrosion Resistance of Aluminum-Copper Coating
Influence of heat treatment on the corrosion resistance of the aluminum-copper (Al-Cu) coating on the aluminum substrate was investigated. The coating was produced by the electrical discharge alloying (EDA) method. The surface and microstructure of the specimens were observed by a scanning electron...
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MDPI AG
2020-07-01
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| Online Access: | https://www.mdpi.com/2075-4701/10/7/966 |
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| author | Mieczyslaw Scendo Slawomir Spadlo Katarzyna Staszewska-Samson Piotr Mlynarczyk |
| author_facet | Mieczyslaw Scendo Slawomir Spadlo Katarzyna Staszewska-Samson Piotr Mlynarczyk |
| author_sort | Mieczyslaw Scendo |
| collection | DOAJ |
| description | Influence of heat treatment on the corrosion resistance of the aluminum-copper (Al-Cu) coating on the aluminum substrate was investigated. The coating was produced by the electrical discharge alloying (EDA) method. The surface and microstructure of the specimens were observed by a scanning electron microscope (SEM). The phase analysis of the composite materials by X-ray diffraction (XRD) and energy-dispersive spectroscopy (EDS) indicated that intermetallic compounds (i.e., CuAl<sub>2</sub> and Cu<sub>9</sub>Al<sub>4</sub>) were formed through reactions between Al and Cu. during the EDA process. A significant increase in the hardness of the Al-Cu coating was affected by the improvement of the alloy structure. The heat treatment of materials was carried out at 400 °C or 600 °C in the air atmosphere. A corrosion test of materials was carried out by using electrochemical methods. The corrosive environment was acidic chloride solution. After heat treatment at 400 °C the mechanical properties of the Al/Cu alloy increased significantly and the oxide layer protect of the alloy surface against corrosion. However, after heat treatment at elevated temperature, i.e., 600 °C it was found that the (Al<sub>2</sub>O<sub>3</sub>)<sub>ads</sub> and (CuO)<sub>ads</sub> coatings were destroyed. The mechanical properties of the Al/Cu alloy decreased, and its surface has undergone deep electrochemical corrosion. |
| first_indexed | 2024-03-10T18:25:03Z |
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| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T18:25:03Z |
| publishDate | 2020-07-01 |
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| series | Metals |
| spelling | doaj.art-c735cf8345c74e12b3f53a56def514f82023-11-20T07:05:00ZengMDPI AGMetals2075-47012020-07-0110796610.3390/met10070966Influence of Heat Treatment on the Corrosion Resistance of Aluminum-Copper CoatingMieczyslaw Scendo0Slawomir Spadlo1Katarzyna Staszewska-Samson2Piotr Mlynarczyk3Institute of Chemistry, Jan Kochanowski University in Kielce, Uniwersytecka 15G, PL-25406 Kielce, PolandDepartment of Computer Techniques and Armaments, Kielce University of Technology, Tysiaclecia Panstwa Polskiego 7, PL-25314 Kielce, PolandInstitute of Chemistry, Jan Kochanowski University in Kielce, Uniwersytecka 15G, PL-25406 Kielce, PolandDepartment of Computer Techniques and Armaments, Kielce University of Technology, Tysiaclecia Panstwa Polskiego 7, PL-25314 Kielce, PolandInfluence of heat treatment on the corrosion resistance of the aluminum-copper (Al-Cu) coating on the aluminum substrate was investigated. The coating was produced by the electrical discharge alloying (EDA) method. The surface and microstructure of the specimens were observed by a scanning electron microscope (SEM). The phase analysis of the composite materials by X-ray diffraction (XRD) and energy-dispersive spectroscopy (EDS) indicated that intermetallic compounds (i.e., CuAl<sub>2</sub> and Cu<sub>9</sub>Al<sub>4</sub>) were formed through reactions between Al and Cu. during the EDA process. A significant increase in the hardness of the Al-Cu coating was affected by the improvement of the alloy structure. The heat treatment of materials was carried out at 400 °C or 600 °C in the air atmosphere. A corrosion test of materials was carried out by using electrochemical methods. The corrosive environment was acidic chloride solution. After heat treatment at 400 °C the mechanical properties of the Al/Cu alloy increased significantly and the oxide layer protect of the alloy surface against corrosion. However, after heat treatment at elevated temperature, i.e., 600 °C it was found that the (Al<sub>2</sub>O<sub>3</sub>)<sub>ads</sub> and (CuO)<sub>ads</sub> coatings were destroyed. The mechanical properties of the Al/Cu alloy decreased, and its surface has undergone deep electrochemical corrosion.https://www.mdpi.com/2075-4701/10/7/966electrical discharge alloyingcopper coatingheat treatmentacidic chloride solutioncorrosion parameterscorrosion rate |
| spellingShingle | Mieczyslaw Scendo Slawomir Spadlo Katarzyna Staszewska-Samson Piotr Mlynarczyk Influence of Heat Treatment on the Corrosion Resistance of Aluminum-Copper Coating Metals electrical discharge alloying copper coating heat treatment acidic chloride solution corrosion parameters corrosion rate |
| title | Influence of Heat Treatment on the Corrosion Resistance of Aluminum-Copper Coating |
| title_full | Influence of Heat Treatment on the Corrosion Resistance of Aluminum-Copper Coating |
| title_fullStr | Influence of Heat Treatment on the Corrosion Resistance of Aluminum-Copper Coating |
| title_full_unstemmed | Influence of Heat Treatment on the Corrosion Resistance of Aluminum-Copper Coating |
| title_short | Influence of Heat Treatment on the Corrosion Resistance of Aluminum-Copper Coating |
| title_sort | influence of heat treatment on the corrosion resistance of aluminum copper coating |
| topic | electrical discharge alloying copper coating heat treatment acidic chloride solution corrosion parameters corrosion rate |
| url | https://www.mdpi.com/2075-4701/10/7/966 |
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