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All Journal Al-Kimia Journal of Energy, Mechanical, Material and Manufacturing Engineering JURNAL VOKASI TEKNOLOGI INDUSTRI (JVTI)
Soleh Wahyudi
Institut Teknologi Sains Bandung
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Mechanical Engineering

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Pengaruh Konsentrasi Tembaga dan Rapat Arus terhadap Morfologi Endapan Elektrodeposisi Tembaga Soleh Wahyudi; Syoni Soepriyanto; Mohammad Zaki Mubarok; Sutarno Sutarno
Al-Kimia Vol 7 No 2 (2019): DECEMBER
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (841.695 KB) | DOI: 10.24252/al-kimia.v7i2.7818

Abstract

Copper deposits have been obtained by the electrolysis method using copper sulfate and sulfuric acid. The effect of copper concentration and current density on the surface morphology of copper deposits and current efficiency have been studied. The variation of copper concentration is 0.04 M and 0.8 M and the variation of current density is 2-8 A/dm2. The copper deposits will be photographed macro, weighed and characterized by Scanning Electron Microscope (SEM) to determine the surface morphology of deposits and Energy-Dispersive X-ray spectroscopy (EDX) to determine the chemical composition of deposits. The surface morphology of copper deposits in the form of compact and without nodules was reached at copper concentration is 0.8 M and the current density is 2 A/dm2 with the average of current efficiency is 96%.
Optimization of the Effect of Electropolishing's Current Density and Time on Roughness, Microstructure and Corrosion Resistance Sutarno; Bambang Widyanto; E.P. Syuryana; Soleh Wahyudi; Fikri Septian Nurul Bayan; Camalia Bani Rachma; Gusti Verhan Pratama; Riskamti; Ariq Akmal Muwaffaq
JEMMME (Journal of Energy, Mechanical, Material, and Manufacturing Engineering) Vol. 6 No. 3 (2021)
Publisher : University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/jemmme.v6i3.19828

Abstract

The surface roughness of medical, pharmaceutical, food, and beverage equipment in direct contact with materials and products plays an important role in product quality, hygiene, equipment corrosion, and ease of cleaning. The high surface roughness is feared as a place for the accumulation of process residues, products, and nesting of microbes such as pathogenic bacteria that degrade product quality. The purpose of this research is to investigate the parameters of the electropolishing process, namely the electric current density and the time of the electropolishing process. The electrolyte solution is a mixture of 35% sulfuric acid and 51% phosphoric acid with the electropolishing process temperature being maintained at 50°C, using stainless steel as cathode, and the material being processed is AISI 316L. Characterization of electropolishing results includes roughness, microstructure, and corrosion resistance.
Studi Pengaruh Rasio Konsentrasi Nikel Sulfat/Nikel Klorida dan Rapat Arus Terhadap Efisiensi Arus pada Sintesitas Serbuk Nikel dengan Metode Elektrolisis Soleh Wahyudi; Syoni Soepriyanto; Satrio Panji Anggolo
JURNAL VOKASI TEKNOLOGI INDUSTRI (JVTI) Vol 4, No 2 (2022): Jurnal Vokasi, Teknologi, dan Industri (JVTI)
Publisher : Institut Teknologi Sains Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1627.799 KB) | DOI: 10.36870/jvti.v4i2.307

Abstract

Dalam penelitian ini dipelajari tentang pengaruh rasio konsentrasi nikel sulfat (NiSO4) dengan nikel klorida (NiCl2) serta rapat arus terhadap efisiensi arus pada sintesis serbuk nikel dengan metode elektrolisis. Proses elektrolisis serbuk nikel dilakukan dengan menggunakan nikel murni sebagai anoda dan stainless steel 316L sebagai katoda, waktu proses elektrolisis selama 5 menit dan suhu elektrolit 25꙳C. Parameter yang divariasikan adalah rasio konsentrasi NiSO4/NiCl2 dan rapat arus. Variasi rasio konsentrasi NiSO4/NiCl2 adalah NiSO4; 19:1; 9:1; 1:1 dan 1:9 dengan konsentrasi ion nikel dalam larutan dibuat tetap sebesar 1,2 M. Sedangkan variasi rapat arusnya adalah 0,5; 0,6; 0,7 dan 0,8 A/cm2. Serbuk yang mengendap di permukaan katoda di-scrapping lalu dibilas dengan aquades dan dikeringkan pada suhu 100꙳C dalam atmosfir udara. Serbuk yang dihasilkan diuji Scanning Electron Microscope (SEM) untuk mengetahui morfologi dan ukuran partikel serbuk, Energy Dispersive X-ray Spectroscopy (EDS) untuk mengetahui komposisi unsur serbuk dan X-Ray Diffraction (XRD) untuk mengetahui senyawa serbuk. Efisiensi arus terbesar sebesar 83,36% diperoleh pada kondisi rasio konsentrasi NiSO4/NiCl2 sebesar 9:1. Pada kondisi tersebut dihasilkan serbuk nikel dengan bentuk angular dan memiliki ukuran partikel rata-rata sebesar 1,95 μm.
Co-Authors Ariq Akmal Muwaffaq Bambang Widyanto Camalia Bani Rachma E.P. Syuryana Fikri Septian Nurul Bayan Gusti Verhan Pratama Mohammad Zaki Mubarok Riskamti Satrio Panji Anggolo Sutarno Sutarno Sutarno Syoni Soepriyanto Syoni Soepriyanto