Wijaksono, M Agung (2024) ANALISIS LAJU KOROSI PADA BAJA SIKU DENGAN VARIASI MEDIA KOROSIF HCl DAN WAKTU MENGGUNAKAN UJI KEKERASAN DAN STRUKTURMIKRO. Undergraduate thesis, Universitas 17 Agustus 1945 Surabaya.
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Abstract
Peristiwa korosi terjadi secara alami dan tidak dapat dicegah sepenuhnya. Tujuan dari penelitian ini adalah bagaimana pengaruh laju korosi terhadap besi siku dan mengetahui hasil variasi lama perendaman dalam air laut dan HCl besi siku dengan menggunakan uji kekerasan dan uji mikro. Sampel yang digunakan adalah besi siku dengan media korosif yaitu air laut dan HCl. Proses yang dilakukan adalah perendaman Besi Siku selama 72 jam, 144 jam dan 216 jam. Hasil yang diharapkan dari penelitian ini adalah mengetahui pengaruhnya terhadap ketahanan korosi. Pengujian kekerasan di lakukan menggunakan alat uji Hardnes Rockwell di laboratorium Teknik Mesin Universitas Negeri Surabaya, dapat di simpulkan bahwa semakin lama waktu perendaman spesimen, maka nilai kekerasan yang didapat semakin rendah.rata-rata HR air laut 72 jam 13.4, 144 jam 7.9, 216 jam 2.4. HCl 9% 72 jam 13.5, 144 jam 7.2, 216 jam 3.7. HCl 18% 72 jam 8.4, 144 jam 6.3, 216 jam 2.2. Kinerja pada baja siku itu sudah mulai menurun, namun perbedaan selisih nilai kekerasan yang menggunakan waktu 144 jam dan 216 jam, menunjukan bahwa penurun nilai kekerasan terhadap air laut dan HCl. Pengujian struktur mikro ini dilakukan Laboratorium Universitas Muhammadiyah Sidoarjo, pengujian struktur mikro ini menggunakan optik 50x, dengan variasi waktu 72 jam, 144 jam, 216 jam, semakin lama waktu perendaman spesimen aka semakin terlihat jelas korosinya. Perhitungan laju korosi, dari ketiga hasil tersebut, seharus nya akan mendapatkan lama waktu perendaman maka laju korosinya semakin tinggi. Dari penelitian yang telah dilakukan maka berikut adalah saran yang dapat diberikan untuk penelitian berikutnya yaitu dalam pengamplasan sebaiknya menggunakan mesin amplas kertas gosok.
| Item Type: | Thesis (Undergraduate) |
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| Uncontrolled Keywords: | Kata kunci: besi siku, korosi, HCl, air laut, laju korosi |
| Subjects: | T Technology > TJ Mechanical engineering and machinery |
| Divisions: | Fakultas Teknik > Program Studi Teknik Mesin |
| Depositing User: | 1421800040 M Agung Wijaksono |
| Date Deposited: | 17 Jun 2026 10:21 |
| Last Modified: | 17 Jun 2026 10:21 |
| URI: | http://repository.untag-sby.ac.id/id/eprint/36918 |
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