Ilham, Ilham Akbar Adzani Syukri (2025) Analisis Mekanisme Inhibisi Ekstrak Kubis Merah (Brassica Oleracea var.capitata f.rubra) Sebagai Inhibitor Organik Pada Baja ASTM A36 Dengan Variasi Temperatur Di Lingkungan Asam. Other thesis, Institut Teknologi Sepuluh Nopember.
![[thumbnail of 2038211082-Undergraduate_Thesis.pdf]](http://repository.its.ac.id/style/images/fileicons/text.png) |
Text
2038211082-Undergraduate_Thesis.pdf - Accepted Version Restricted to Repository staff only Download (9MB) | Request a copy |
Abstract
Korosi terjadi akibat reaksi elektrokimia antara logam dan lingkungan, yang pada akhirnya berakibat pada penurunan kualitas logam tersebut, seperti peningkatan kerapuhan, kasar dan rentan terhadap kerusakan. Faktor-faktor seperti uap, air,asam, garam dan suhu lingkungan yang tinggi berperan dalam memicu korosi logam. Salah satu metode untuk mencegah korosi ialah dengan menggunakan inhibitor. Inhibitor adalah senyawa kimia yang dalam jumlah kecil namun dapat menahan atau menghambat reaksi korosi logam baja dengan lingkungannya. Salah satu yang dapat digunakan untuk inhibitor organic yaitu tumbuhan kubis merah. Penelitian ini dilakukan dengan tujuan untuk mengetahui pengaruh inhibitor kubis merah terhadap laju korosi yang terjadi pada Baja ASTM A36 dengan media larutan HCL 1M. Pembuatan ekstrak dengan metode maserasi. Variasi tetap yang digunakan pada penelitian ini adalah variasi temperatur 25°C, 30°C, 35°C. Pengujian yang dilakukan pada sampel yaitu uji Polarisasi, EIS, Weight Loss, FTIR dan SEM. Pada pengujian polarisasi dengan efisiensi tertinggi terletak pada temperatur 30°C konsentrasi 0,6 mL/L sebesar 98,83% sedangkan pengujian EIS dengan efisiensi tertinggi berada pada temperatur 35°C dengan konsentrasi 0,2 mL/L sebesar 94,69%. Pengujian Weight Loss menggunakan hasil uji polarisasi terbaik dan konsentrasi 0 mL/L sebagai pembanding , didapatkan efisiensi sebesar 88,89% pada konsentrasi 0,6 mL/L dengan temperatur 30°C. Pengujian FTIR mengindikasikan adanya gugus fungsi yang dapat digunakan sebagai bahan inhibitor organik. Hasil uji SEM tanpa penggunaan inhibitor memiliki kepadatan rongga yang banyak dan menyebar , ukuran rongga yang besar dan tajam dan kondisi permukaan yang kasar dan terdegradasi, berbanding dengan hasil penggunaan inhibitor memiliki kepadatan rongga yang sangat sedikit , ukuran rongga kecil dan tumpul atau tidak tampak dan kondisi permukaan yang rata dan tertutup lapisan film
=================================================================================================================================
Corrosion occurs as a result of electrochemical reactions between metals and their environment, which ultimately leads to a deterioration in the quality of the metal, such as increased brittleness, roughness, and susceptibility to damage. Factors such as vapour, water, acid, salt, and high ambient temperatures play a role in triggering corrosion of metals. One method of preventing corrosion is to use inhibitors. Inhibitors are chemical compounds that, even in small quantities, can prevent or inhibit the corrosion reaction between steel and its environment. One such inhibitor that can be used is red cabbage. This study was conducted to determine the effect of red cabbage inhibitor on the corrosion rate of ASTM A36 steel in an HCl solution at a concentration of 1M. The extract was prepared using the maceration method. The constant variables used in this study were temperature variations of 25°C, 30°C, and 35°C. The 1M solution medium. The extract was prepared using the maceration method. The constant variables used in this study were temperature variations at 25°C, 30°C, and 35°C. The tests conducted on the samples included Polarization Testing, EIS, Weight Loss, FTIR, and SEM. In the Polarization test, the highest efficiency was observed at a temperature of 30°C and a concentration of 0.6 mL/L, reaching 98.83%, while in the EIS test, the highest efficiency was achieved at a temperature of 35°C and a concentration of 0.2 mL/L, reaching 94.69%. The Weight Loss test used the best Polarization test results and a concentration of 0 mL/L as a comparison, yielding an efficiency of 88.89% at a concentration of 0.6 mL/L and a temperature of 30°C. The FTIR test indicated the presence of functional groups that could be used as organic inhibitor materials. SEM test results without inhibitor use showed high porosity density and distribution, large and sharp pore sizes, and rough and degraded surface conditions, whereas inhibitor use resulted in very low porosity density, small and blunt or invisible pore sizes, and smooth surface conditions covered by a film layer
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Baja ASTM A36, HCL 1M, Inhibitor Organik, Korosi, Kubis Merah. ============================================================ ASTM A36 Steel, Corrosion, HCL, Organic Inhibitor, Red Cabbage |
| Subjects: | T Technology > T Technology (General) T Technology > TD Environmental technology. Sanitary engineering T Technology > TJ Mechanical engineering and machinery T Technology > TN Mining engineering. Metallurgy > TN690 Metallography. Physical metallurgy T Technology > TP Chemical technology T Technology > TP Chemical technology > TP155.7 Chemical processes. T Technology > TP Chemical technology > TP156 Crystallization. Extraction (Chemistry). Fermentation. Distillation. Emulsions. T Technology > TS Manufactures |
| Divisions: | Faculty of Vocational > Mechanical Industrial Engineering (D4) |
| Depositing User: | Ilham Akbar Adzani Syukri |
| Date Deposited: | 25 Jul 2025 03:51 |
| Last Modified: | 25 Jul 2025 03:51 |
| URI: | http://repository.its.ac.id/id/eprint/121218 |
Actions (login required)
 |
View Item |