Analysis of The Effect of Variations of Natural Inhibitors and Solution Media on Corrosion Rate of ST 41 Carbon Steel (Case Study: JIIPE Manyar Gresik Port)

Hariyanto, Aditya Dwi (2022) Analysis of The Effect of Variations of Natural Inhibitors and Solution Media on Corrosion Rate of ST 41 Carbon Steel (Case Study: JIIPE Manyar Gresik Port). Undergraduate thesis, Universitas 17 Agustus 1945 Surabaya.

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Abstract

The use of carbon steel in the development of technology and the machining industry as one of the supporting materials has a fairly large role. St 41 carbon steel is known to have a high enough strength when used for heavy equipment structures in a port environment. However, in its application, many factors cause the usability of carbon steel to decrease. One of the causes is corrosion. Corrosion is material damage caused by the influence of the surrounding environment. Corrosion can cause a lot of losses due to a relatively large reduction in dimensions per unit time and also reduces the life of the building. Carbon steel that undergoes erosion corrosion will experience accelerated or increased damage caused by the relative motion and corrosive media on the metal surface. Corrosion can occur quickly if environmental control and prevention are not carried out. This test is carried out using the weight loss method, a corrosion test method that utilizes the weight loss of a test specimen which will then be calculated and analyzed using the formula. The test was carried out for a period of 20 days, with 9 specimens without inhibitor and 18 specimens using the addition of inhibitor solution. The corrosion rate of st 41 carbon steel added with guava leaf inhibitor was better or more efficient, both in fertilizer solution medium, salt solution and soda solution ash. The efficiency of guava leaf extract inhibitor increased with increasing immersion time, and reached the optimum value on the 25th day with an efficiency of 58.8% in the fertilizer solution medium, on the 20th day with an efficiency of 81.4% in the salt solution medium and on day 4 with an efficiency of 82.6% in soda ash solution medium. Keywords: Corrosion, Natural Inhibitors, Papaya, Guava

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Corrosion, Natural Inhibitors, Papaya, Guava
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Fakultas Teknik > Program Studi Teknik Mesin
Depositing User: 1421800135 Aditya Dwi Hariyanto
Date Deposited: 19 Aug 2022 07:50
Last Modified: 19 Aug 2022 07:50
URI: http://repository.untag-sby.ac.id/id/eprint/16309

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