Chusururi, Mochamad Alvan Mifta (2018) Studi Kinerja Pengaruh Pencampuran Inhibitor Ekstrak Daun Pegagan Dengan Inhibitor Sarang Semut Dan Inhibitor Ekstrak Daun Urang-Aring Dengan Inhibitor Ekstrak Sarang Semut Terhadap Ketahanan Korosi Baja API 5L Grade B Dalam Larutan 1M HCL Dengan Variasi Temperature. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Inhibitor organic memiliki beberapa kelebihan daripada inhibitor anorganik, antara lain: bersifat aman, biodegradable, dan ramah lingkungan dan tentunya harga yang murah, namun inhibitor organic memiliki kelemahan yaitu mengalami kerusakan pada kenaikan temperature, sehingga tidak bisa digunakan pada pipa baja di industri minyak dan gas bumi. Penelitian ini bertujuan untuk menganalisa pengaruh pencampuran inhibitor Centella asiatica (pegagan) dengan inhibitor Myrmecodia Pendans (sarang semut) dan inhibitor Eclipta alba (urang aring) dengan inhibitor Myrmecodia Pendans (sarang semut) terhadap ketahanan korosi baja API 5L Grade B pada kenaikan temperature. Pengujian Pada penelitian ini menggunakan FTIR,Weightloss,Electrochemical,SEM dan EDS. Perbandingan konsentrasi terbaik yang didapatkan pada penelitaian ini adalah 70CA+30MP(%wt) dan 70EA+30MP(%wt). Pada pengujian FTIR menunjukkan beberapa gugus fungsi seperti O-H; C≡N; NH3+ dan NO2 yang teradsorpsi pada permukaan baja. Pada pengujian polarisasi menujukkan kedua konsentrasi bertipe mixing inhibitor kecuali pada konsentrasi 70EA+30MP(%wt) ditemperature 50°C bertipe anodic inhibitor. Pengujian EIS menunjukkan laju korosi logam dengan pencampuran inhibitor dikontrol oleh proses difusi. Pengujian SEM terlihat terbentuk lapisan barrier akibat adsorpsi molekul inhibitor dan EDS menunjukkan persebaran atom N dan S. dengan nilai effesiensi maksimum pada konsentrasi 70CA+30MP(%wt) adalah 91.53583% pada temperature 70°C dan konsentrasi 70EA+30MP(%wt) 90.54553% pada temperature 40°C.Mekanisme ikatan secara kimia dengan kenaikan temperature.
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Organic inhibitors have some advantages over inorganic inhibitors, among others: safe, biodegradable, and environmentally friendly and of course cheap price, but organic inhibitors have a weakness that is damaged at the rise in temperature so it can not be used in oil pipelines in oil and gas industry. This study aims to analyze the effect of mixing of Centella asiatica (pegagan) inhibitor with Myrmecodia Pendans (sarang semut) inhibitor and inhibitor Eclipta alba (urang aring) with Myrmecodia Pendans(sarang semut) inhibitor on steel corrosion resistance of API 5L Grade B at temperature rise. Tests In this study used FTIR, Weightloss, Electrochemical, SEM, EDS. Comparison The best concentrations obtained in this study were 70CA + 30MP (wt%) and 70EA + 30MP (% wt). The FTIR test shows several functional groups such as O-H; C≡N; NH3+ and NO2 are adsorbed on the steel surface. In the polarization test showed both concentration of type mixing inhibitor except at concentration 70EA + 30MP (% wt) at 50°C type anodic inhibitor. The EIS test shows that the rate of corrosion of metals with controlled by the diffusion process. SEM testing appears to form a barrier layer due to adsorption of molecular inhibitors and EDS shows the spread of N and S. atoms with maximum efficiency value at 70CA + 30MP (% wt) concentration is 91.53583% at 70 ° C and 70EA + 30MP (% wt) 90.54553 % at 40 ° C. Chemical bonding mechanism with temperature rise.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSMt 620.112 23 Chu s-1 3100018076476 |
| Uncontrolled Keywords: | Inhibitor Korosi, Potensiodinamik, Electrochemichal Impedance Spectroscopy, Weightloss, Inhibitor Korosi, Potensiodinamik, Electrochemichal Impedance Spectroscopy, Weightloss |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) > TA418.74 Corrosion and anti-corrosives |
| Divisions: | Faculty of Industrial Technology > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis |
| Depositing User: | Mochamad Alvan Mifta Chusururi |
| Date Deposited: | 07 Feb 2019 03:10 |
| Last Modified: | 23 Oct 2020 06:54 |
| URI: | http://repository.its.ac.id/id/eprint/53387 |
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