Tai, Donatus Nikodemus (2024) ANALISA PENGARUH TEMPERATUR PADA PROSES PERLAKUAN PANAS DAN MEDIA PENDINGIN TERHADAP LAJU KOROSI BAJA ST 41. Undergraduate thesis, Universitas 17 Agustus 1945 Surabaya.
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Abstract
Korosi merupakan peristiwa perusakan atau degradasi material logam akibat reaksi kimia dalam lingkungannya. Korosi menjadi salah satu aspek utama dalam pertimbangan pemilihan material pabrikasi karena dapat menyebabkan kerugian signifikan. Baja adalah logam paduan dengan besi sebagai unsur dasar yang dipadukan dengan beberapa elemen lain, salah satunya adalah baja karbon. Baja ST 41 mampu menahan kekuatan tarik sebesar 41 kgf/mm² dengan komposisi 0,1517% karbon, 0,1994% silikon, 0,5631% mangan, 0,0224% fosfor, dan 0,047% sulfur. Baja ST 41 memiliki kekuatan tinggi, stabilitas dimensi yang baik, dan nilai kekerasan yang cukup, sehingga banyak digunakan dalam berbagai aplikasi seperti poros, batang penekanan (plunger), pin camshaft, spring pin, dan lain-lain. Penelitian ini bertujuan untuk mengetahui pengaruh variasi media pendingin terhadap laju korosi Baja ST 41 dengan media korosi air laut, air PDAM, dan H2SO4, serta pengaruh variasi media korosi pada Baja ST 41 terhadap laju korosi. Metode yang digunakan adalah pengujian weight loss, yaitu dengan menghitung berat awal dan berat akhir spesimen. Spesimen diperlakukan panas pada variasi temperatur 800°C, 850°C, 900°C dengan waktu tahan selama 30 menit, kemudian didinginkan menggunakan media pendingin air. Selanjutnya, spesimen direndam dalam media korosi air laut, air PDAM, dan H2SO4 selama 21 hari (504 jam) dan dihitung laju korosinya. Hasil penelitian menunjukkan bahwa laju korosi terbaik diperoleh pada spesimen yang didinginkan dengan media pendingin air laut dan diuji dengan media korosi air PDAM dan H2SO4, dengan nilai rata-rata laju korosi sebesar 0,0895 mm/y.
| Item Type: | Thesis (Undergraduate) |
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| Uncontrolled Keywords: | Baja ST 41, Laju Korosi |
| Subjects: | T Technology > TJ Mechanical engineering and machinery |
| Divisions: | Fakultas Teknik > Program Studi Teknik Mesin |
| Depositing User: | 1421700159 Donatus Nikodemus Tai |
| Date Deposited: | 15 Jun 2026 07:54 |
| Last Modified: | 15 Jun 2026 07:54 |
| URI: | http://repository.untag-sby.ac.id/id/eprint/34254 |
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