Putra, Ragha Radithya Noer (2024) Pemetaan Tingkat Korosifitas Atmosfer Dengan Indikator Baja Galvalume 55%Al-Zn Tipe Struktural Kanal-C, Reng, Dan Hollow Pt. A Di Wilayah Kota Surabaya. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Korosi adalah suatu proses yang terjadi pada permukaan logam ketika terpapar dengan lingkungan yang bersifat reaktif. Fenomena ini menyebabkan kerusakan logam secara berangsur-angsur. Penelitian ini memetakan tingkatan korosi atmosferik di lima wilayah Surabaya. Logam yang digunakan pada penelitian ini adalah kerangka baja galvalum 55%Al-Zn dengan tipe reng, hollow, dan kanal-c. Penelitian ini dilakukan selama waktu pemaparan 150 hari. Laju korosi dihitung dengan menggunakan metode weight loss. Serta dilakukan uji XRD, Metalografi, dan Visual yang bertujuan unutuk membandingkan hasil dari ketiga tipe baja galvalum di lima wilayah pemaparan. Hasil penelitian menyimpulkan bahwa tingkat korosifitas atmosfer tinggi pada baja galvalum 55%Al-Zn tipe reng berada pada Kecamatan Rungkut (9,49 x 10-2 mpy), Kenjeran (9,48 x 10-2 mpy), Bulak (7,56 x 10-2 mpy), Pabean Cantikan (6,95 x 10-2 mpy), dan Asemrowo (6,47 x 10-2 mpy). Tingkat korosifitas atmosfer sedang berada pada Kecamatan Wonokromo (5,23 x 10-2 mpy), Pakal (4,97 x 10-2 mpy), Sukolilo (4,91 x 10-2 mpy), Tandes (4,63 x 10-2 mpy), dan Jambangan (4,57 x 10-2 mpy). Tingkat korosifitas atmosfer rendah berada pada Kecamatan Tegalsari (4,45 x 10-2 mpy), Bubutan (3,73 x 10-2 mpy), Simokerto (3,46 x 10-2 mpy), Gubeng (2,87 x 10-2 mpy), dan Wiyung (1,99 x 10-2 mpy). Sedangkan, tingkat korosifitas tinggi untuk baja galvalum 55%Al-Zn tipe hollow berada pada Rungkut (1,07 x 10-1 mpy), Bulak (8,70 x 10-2 mpy), Asemrowo (7,94 x 10-2 mpy), Kenjeran (6,76 x 10-2 mpy), dan Pabean Cantikan (6,16 x 10-2 mpy). Tingkat korosifitas atmosfer sedang berada pada Jambangan (5,92 x 10-2 mpy), Sukolillo (5,75 x 10-2 mpy), Pakal (5,46 x 10-2 mpy), Wonokromo (5,38 x 10-2 mpy), dan Tandes (5,30 x 10-2 mpy). Tingkat korosifitas atmosfer rendah berada pada Kecamatan Gubeng (5,28 x 10-2 mpy), Wiyung (4,87 x 10-2 mpy), Simokerto (4,69 x 10-2 mpy), Bubutan (4,28 x 10-2 mpy), dan Tegalsari (3,69 x 10-2 mpy). Kemudian, tingkat korosifitas atmosfer tinggi pada baja galvalum 55%Al-Zn tipe kanal-c berada pada Kecamatan Pabean Cantikan (3,35 x 10-1 mpy), Rungkut (1,72 x 10-1 mpy), Kenjeran (1,30 x 10-1 mpy), Sukolilo (1,25 x 10-1 mpy), dan Bulak (1,13 x 10-1 mpy). Tingkat korosifitas atmosfer sedang berada pada Kecamatan Simokerto (1,12 x 10-1 mpy), Asemrowo (1,01 x 10-1 mpy), Gubeng (1,03 x 10-1 mpy), Tandes (9,50 x 10-2 mpy), dan Pakal (9,18 x 10-2 mpy). Tingkat korosifitas atmosfer rendah berada pada Bubutan (8,95 x 10-2 mpy), Wonokromo (8,85 x 10-2 mpy), Jambangan (8,07 x 10-2 mpy), Wiyung (7,65 x 10-2 mpy), dan Tegalsari (7,59 x 10-2 mpy). Pemetaan dilakukan berdasarkan laju korosi di setiap kecamatan wilayah pemaparan. Laju korosi ini dipengaruhi oleh keberadaan industri pada kecamatan-kecamatan tersebut, serta letak geografisnya.
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Corrosion is a process that occurs on metal surfaces when exposed to a reactive environment. This phenomenon causes gradual deterioration of the metal. This study mapped the extent of atmospheric corrosion in five areas of Surabaya. The metal used in this study is 55%Al-Zn Galvalume Steel with batten, hollow, and canal-c types. The study was conducted over an exposure time of 150 days. The corrosion rate was calculated using the weight loss method. XRD, Metallographic, and Visual tests were conducted to compare the results of the three types in five exposure areas. The results concluded that the high level of atmospheric corrosivity of 55%Al-Zn lath-type galvalume steel is in the districts of Rungkut (9,49 x 10-2 mpy), Kenjeran (9,48 x 10-2 mpy), Bulak (7,56 x 10-2 mpy), Pabean Cantikan (6,95 x 10-2 mpy), and Asemrowo (6,47 x 10-2 mpy). The medium atmospheric corrosivity level is in Wonokromo (5,23 x 10-2 mpy), Pakal (4,97 x 10-2 mpy), Sukolilo (4,91 x 10-2 mpy), Tandes (4,63 x 10-2 mpy), and Jambangan (4,57 x 10-2 mpy ) sub-districts. Low atmospheric corrosivity levels are in Tegalsari Kecamatan Tegalsari (4,45 x 10-2 mpy), Bubutan (3,73 x 10-2 mpy), Simokerto (3,46 x 10-2 mpy), Gubeng (2,87 x 10-2 mpy), and Wiyung (1,99 x 10-2 mpy) sub-districts. Meanwhile, the high corrosivity level for hollow type 55%Al-Zn galvalume steel is in Rungkut (1,07 x 10-1 mpy), Bulak (8,70 x 10-2 mpy), Asemrowo (7,94 x 10-2 mpy), Kenjeran (6,76 x 10-2 mpy), and Pabean Cantikan (6,16 x 10-2 mpy). Medium atmospheric corrosivity levels are in Jambangan (5,92 x 10-2 mpy), Sukolillo (5,75 x 10-2 mpy), Pakal (5,46 x 10-2 mpy), Wonokromo (5,38 x 10-2 mpy), and Tandes (5,30 x 10-2 mpy). The low atmospheric corrosivity level is in Gubeng (5,28 x 10-2 mpy), Wiyung (4,87 x 10-2 mpy), Simokerto (4,69 x 10-2 mpy), Bubutan (4,28 x 10-2 mpy), and Tegalsari (3,69 x 10-2 mpy) sub-districts. Then, the high level of atmospheric corrosivity in canal-c type 55%Al-Zn galvalume steel is in Pabean Cantikan (3,35 x 10-1 mpy), Rungkut (1,72 x 10-1 mpy), Kenjeran (1,30 x 10-1 mpy), Sukolilo (1,25 x 10-1 mpy), and Bulak (1,13 x 10-1 mpy) sub-districts. The medium atmospheric corrosivity level is in Simokerto (1,12 x 10-1 mpy), Asemrowo (1,01 x 10-1 mpy), Gubeng (1,03 x 10-1 mpy), Tandes (9,50 x 10-2 mpy), and Pakal (9,18 x 10-2 mpy) sub-districts. Low atmospheric corrosivity levels are in Bubutan (8,95 x 10-2 mpy), Wonokromo (8,85 x 10-2 mpy), Jambangan (8,07 x 10-2 mpy), Wiyung (7,65 x 10-2 mpy), and Tegalsari (7,59 x 10-2 mpy). The mapping was done based on the corrosion rate in each sub-district of the exposure area. The corrosion rate is influenced by the presence of industry in these sub-districts, as well as their geographical location.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Atmospheric Corrosion, Corrosion Rate, Galvalume Steel, Mapping. Baja Galvalum, Korosi Atmosferik, Laju Korosi, Pemetaan |
| Subjects: | T Technology > TS Manufactures > TS156 Quality Control. QFD. Taguchi methods (Quality control) |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis |
| Depositing User: | Ragha Radithya Noer Putra |
| Date Deposited: | 02 Aug 2024 02:33 |
| Last Modified: | 17 Sep 2024 06:01 |
| URI: | http://repository.its.ac.id/id/eprint/111457 |
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