Putra, Nanda Rizky Anugerah Irdanin (2020) Pengaruh Kadar Timah (Sn) pada Anoda Aluminium terhadap Struktur Mikro dan Karakteristik Proteksi. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Anoda korban aluminium merupakan anoda yang sering digunakan untuk proteksi pada lingkungan air laut. Penambahan Sn pada anoda aluminium berpengaruh terhadap struktur mikro dan karakteristik proteksinya. Oleh karenanya, penelitian ini mengarah kepada analisis pengaruh kadar Sn pada anoda aluminium terhadap struktur mikro dan karakteristik proteksinya. Karakteristik proteksi akan mengarah terkait aspek open circuit potential, laju korosi, laju konsumsi, kapasitas arus, dan efisiensi anoda korban aluminium setelah ditambahkan variasi 0.3, 0.9, dan 1.6 Sn. Metode yang digunakan yaitu pengecoran dengan cetakan permanen. Kemudian dilakukan pengujian XRF, metalografi, tafel, open circuit potential, dan galvanik. Hasil yang didapat yaitu peningkatan penambahan Sn menyebabkan munculnya presipitat Sn pada batas butir matriks α-Al sehingga menimbulkan efek galvanik. Hal itu berpengaruh terhadap peningkatan aktivitas anoda aluminium melalui semakin negatifnya nilai open circuit potential hingga -1.122 V vs Ag/AgCl. Kemudian laju korosi dan laju konsumsi semakin meningkat hingga 0.73279 mpy dan 4.56 Kg/A.y namun kapasitas arus dan efisiensi semakin turun menjadi 1921 A.h/Kg dan 73.27%.
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Aluminium anode is an anode that usually uses to protect the structure in sea environment. The protection characteristic of aluminium anode is affected by the content of Sn. Because of that, this research is about analysis the effect of Sn addition into the microstructure and protection characteristic of aluminium anode. The protection characteristic of aluminium anode is include of open circuit potential, corrosion rate, consumption rate, current capacity, and efficiency after the addition of 0.3 Sn, 0.9 Sn, and 1.6 Sn. The method of this research is casting with permanent mold. Then the result is tested by XRF, metallography, tafel, open circuit potential, and galvanic. The result is the addition of Sn cause the appearance of Sn precipitates in the grain boundary of matrix α-Al that causes the galvanic effect. Because of that, the activity of aluminium anode is increase through the value of open circuit potential become more negative into -1.122 V vs Ag/AgCl Then the corrosion and consumption rate increase into 0.73279 mpy and 4.56 Kg/A.y, but the current capacity and efficiency decrease into 1921 A.h/Kg and 73.27%.
| Item Type: | Thesis (Other) |
|---|---|
| Additional Information: | RSMt 620.112 23 Put p-1 2020 |
| Uncontrolled Keywords: | Anoda, Al, Karakteristik, Pengecoran, Sn |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) > TA418.74 Corrosion and anti-corrosives T Technology > TN Mining engineering. Metallurgy > TN689+ Physical metallurgy T Technology > TN Mining engineering. Metallurgy > TN690 Metallography. Physical metallurgy |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis |
| Depositing User: | Nanda Rizky Anugerah Putra Irdanin |
| Date Deposited: | 08 Jan 2024 02:04 |
| Last Modified: | 08 Jan 2024 02:04 |
| URI: | http://repository.its.ac.id/id/eprint/74446 |
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