Yaqin, Rizqi Ilmal (2016) Pengaruh pH Dan Laju Aliran Fluida Pada Flow Loop System Terhadap Karakteristik Korosi Baja Karbon Rendah Di Lingkungan CH3COOH. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Fenomena korosi adalah proses alami yang selalu terjadi pada logam, khususnya baja sebagai bahan utama untuk komponen dan peralatan industri. Pipeline merupakan salah satu komponen yang diserang oleh elektrolit atau media korosif, seperti minyak mentah, gas atau cairan lainnya. Selain media korosif, laju alir mempengaruhi tingkat korosi serta pH elektrolit. Laju korosi dapat diukur dengan banyak metode. Salah satu metode adalah Weightloss dan Tafel. Tujuan dari penelitian ini adalah untuk menganalisis pengaruh pH dan tingkat laju alir terhadap karakteristik korosi baja karbon rendah dalam lingkungan CH3COOH dengan simulasi flow loop. Penelitian ini menggunakan baja karbon rendah sebagai kupon ujinya dengan variasi pH 5,6,7 dan kecepatan aliran fluida 0 m/s, 0.645 m/s ,1.328 m/s. Berdasarkan pengujian Tafel dan weight loss selama 5 dan 10 hari ditemukan bahwa laju korosi meningkat dengan peningkatan laju aliran dan penurunan nilai pH. Laju korosi tertinggi didapat pada pH 5 dan kecepatan 1.328 m/s sebesar 0,6716 mm/year untuk hasil weight loss selama 5 hari , dan nilai 0,5998 mm/year untuk metode Tafel. Hasil pengujian XRD hanya ditemukan senyawa tunggal Fe namun tidak ditemukan senyawa hasil produk korosi di karenakan adanya gerusan yang di sebabkan oleh aliran fluida. Morfologi permukaan baja hasil pengujian SEM menunjukkan gerusan dan permukaan yang kasar yang disebabkan oleh aliran fluida.
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Corrosion phenomenon is a natural process that will always occurs on metals, particularly steel as major material for industrial components and equipment. Pipeline is one of component which attacked by the electrolyte or corrosive media, such as crude oil, gas or other liquids. Beside of corrosive media, the flow rate and pH affects rate of corrosion. The corrosion rate can be measured by several methods. The example are weightloss and Tafel method. The purpose of this study was to analyze the effect of pH and flow rate of electrolyte to the corrosion characteristics of low carbon steel in a simulated environment CH3COOH with flow loop. This study used a low-carbon steel as a test coupon with pH variation of 5,6,7 and fluid flow velocity of 0 m / s, 0645 m / s, 1328 m / s. Based on Tafel and weight loss testing for 5 and 10 days. It was found that the corrosion rate increases with increasing flow rate and a decrease in the pH value. The highest corrosion rate obtained at pH 5 and the speed of 1,328 m / s of 0.6716 mm / year for the results of weight loss for 5 days, and a value of 0.5998 mm / year for the Tafel method. The XRD examination perfomed only single crystal Fe but there wasn't any other Fe compound's phase because the corrosion products were scours by the fluid flow. The morphology of Steel surface examined using SEM test. The result showed a scours and a rough surface that could be caused by the fluid flow
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSMt 620.106 4 Yaq p |
| Uncontrolled Keywords: | Korosi, Laju aliran Fluida , pH , Flow Loop |
| Subjects: | T Technology > TN Mining engineering. Metallurgy > TN752.I5 Steel--Heat treatment |
| Divisions: | Faculty of Industrial Technology > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis |
| Depositing User: | Users 13 not found. |
| Date Deposited: | 06 Sep 2017 04:04 |
| Last Modified: | 28 Dec 2018 02:22 |
| URI: | http://repository.its.ac.id/id/eprint/48799 |
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