The Effect of Chromium and Manganese Addition on the Corrosion of As-cast Al-Si-Fe-Cu Alloy System in Caustic Soda
The effect of chromium and manganese addition on the corrosion of Al-Si-Fe-Cu alloy system in caustic soda (NaOH) at room temperature (28 °C) was investigated using weight loss method. The alloys containing 0.1 to 0.3% Cr and Mn were produced and sand cast into cylindrical test bars at the foundry s...
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| Format: | Article |
| Language: | English |
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al-Farabi Kazakh National University
2008-01-01
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| Series: | Eurasian Chemico-Technological Journal |
| Online Access: | http://ect-journal.kz/index.php/ectj/article/view/686 |
| _version_ | 1818514479018672128 |
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| author | S.A. Yaro V.S. Aigbodion |
| author_facet | S.A. Yaro V.S. Aigbodion |
| author_sort | S.A. Yaro |
| collection | DOAJ |
| description | The effect of chromium and manganese addition on the corrosion of Al-Si-Fe-Cu alloy system in caustic soda (NaOH) at room temperature (28 °C) was investigated using weight loss method. The alloys containing 0.1 to 0.3% Cr and Mn were produced and sand cast into cylindrical test bars at the foundry shop of the National Metallurgical Development Center, Jos. After casting the microstructures of the as- cast alloys were determined. The as-cast test bars were machined to corrosion coupons and immersed into 0.5M NaOH solution and their rate of corrosion determined using the weight loss method. It was observed that simultaneous addition of chromium and manganese to the alloy system imparted the highest corrosion resistance to the alloy due to the formation of hard and passive phases which acted as strong protective barriers to corrosion. While addition of chromium alone to the alloy gave a better corrosion resistance than the addition of manganese alone due to the formation of passive oxide layer of chromium oxide. |
| first_indexed | 2024-12-11T00:16:25Z |
| format | Article |
| id | doaj.art-9aa991f715244e21a5583133552210ae |
| institution | Directory Open Access Journal |
| issn | 1562-3920 2522-4867 |
| language | English |
| last_indexed | 2024-12-11T00:16:25Z |
| publishDate | 2008-01-01 |
| publisher | al-Farabi Kazakh National University |
| record_format | Article |
| series | Eurasian Chemico-Technological Journal |
| spelling | doaj.art-9aa991f715244e21a5583133552210ae2022-12-22T01:27:56Zengal-Farabi Kazakh National UniversityEurasian Chemico-Technological Journal1562-39202522-48672008-01-01101798410.18321/ectj443686The Effect of Chromium and Manganese Addition on the Corrosion of As-cast Al-Si-Fe-Cu Alloy System in Caustic SodaS.A. Yaro0V.S. Aigbodion1Department of Metallurgical and Materials Engineering, Ahmadu Bello University, Zaria P.M.B 1045, Zaria, NigeriaDepartment of Metallurgical and Materials Engineering, Ahmadu Bello University, Zaria P.M.B 1045, Zaria, NigeriaThe effect of chromium and manganese addition on the corrosion of Al-Si-Fe-Cu alloy system in caustic soda (NaOH) at room temperature (28 °C) was investigated using weight loss method. The alloys containing 0.1 to 0.3% Cr and Mn were produced and sand cast into cylindrical test bars at the foundry shop of the National Metallurgical Development Center, Jos. After casting the microstructures of the as- cast alloys were determined. The as-cast test bars were machined to corrosion coupons and immersed into 0.5M NaOH solution and their rate of corrosion determined using the weight loss method. It was observed that simultaneous addition of chromium and manganese to the alloy system imparted the highest corrosion resistance to the alloy due to the formation of hard and passive phases which acted as strong protective barriers to corrosion. While addition of chromium alone to the alloy gave a better corrosion resistance than the addition of manganese alone due to the formation of passive oxide layer of chromium oxide.http://ect-journal.kz/index.php/ectj/article/view/686 |
| spellingShingle | S.A. Yaro V.S. Aigbodion The Effect of Chromium and Manganese Addition on the Corrosion of As-cast Al-Si-Fe-Cu Alloy System in Caustic Soda Eurasian Chemico-Technological Journal |
| title | The Effect of Chromium and Manganese Addition on the Corrosion of As-cast Al-Si-Fe-Cu Alloy System in Caustic Soda |
| title_full | The Effect of Chromium and Manganese Addition on the Corrosion of As-cast Al-Si-Fe-Cu Alloy System in Caustic Soda |
| title_fullStr | The Effect of Chromium and Manganese Addition on the Corrosion of As-cast Al-Si-Fe-Cu Alloy System in Caustic Soda |
| title_full_unstemmed | The Effect of Chromium and Manganese Addition on the Corrosion of As-cast Al-Si-Fe-Cu Alloy System in Caustic Soda |
| title_short | The Effect of Chromium and Manganese Addition on the Corrosion of As-cast Al-Si-Fe-Cu Alloy System in Caustic Soda |
| title_sort | effect of chromium and manganese addition on the corrosion of as cast al si fe cu alloy system in caustic soda |
| url | http://ect-journal.kz/index.php/ectj/article/view/686 |
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