Santoso, Khoirul Wahyu and , Agus Dwi Anggono, ST, M.Eng, Ph.D (2025) Pengaruh Variasi Waktu Celup Pada Baja Aisi 316 Terhadap Sudut Kontak Hydrophobic Pelapisan Cr-zn Dan Zn-cr Dengan Metode Electroplating. Skripsi thesis, Universitas Muhammadiyah Surakarta.
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Abstract
This study aims to determine the effect of immersion time variation in Cr-Zn and Zn-Cr electroplating on the hydrophobic surface properties of AISI 316 stainless steel. The specimens underwent a two-step electroplating process for 15 and 25 minutes, followed by Scanning Electron Microscope–Energy Dispersive X-ray Spectroscopy (SEM-EDS) analysis and water contact angle measurement. Results showed that Cr-Zn plating for 15 minutes yielded the highest contact angle of 131.711°, followed by Zn-Cr 15 minutes (122.712°), Cr-Zn 25 minutes (123.593°), and Zn-Cr 25 minutes (111.909°), while uncoated AISI 316 had only 94.874°. SEM observations indicated that 15-minute coatings formed rougher and denser microstructures, enhancing hydrophobicity, whereas excessive growth at 25 minutes led to reduced surface roughness. EDS analysis revealed increased Cr and Zn content depending on the plating sequence and duration. Cr-Zn electroplating for 15 minutes proved to be the most effective method in enhancing surface hydrophobicity by optimizing microstructure and elemental distribution.
| Item Type: | Thesis (Skripsi) |
|---|---|
| Uncontrolled Keywords: | AISI 316, Cr-Zn, Zn-Cr, electroplating, contact angle, hydrophobic, SEM- EDS |
| Subjects: | T Technology > T Technology (General) |
| Divisions: | Fakultas Teknik > S1 Teknik Mesin |
| Depositing User: | KHOIRUL WAHYU SANTOSO |
| Date Deposited: | 29 Jul 2025 03:43 |
| Last Modified: | 29 Jul 2025 03:43 |
| URI: | http://eprints.ums.ac.id/id/eprint/136496 |
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