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      •   UMY Repository
      • 03. DISSERTATIONS AND THESIS
      • Students
      • Undergraduate Thesis
      • Faculty of Engineering
      • Department of Mechanical Engineering
      • View Item
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      PENGARUH KERAPATAN ARUS DALAM PROSES ELECTROPLATING STOD TERHADAP AREA HIGH CURRENT DAN LOW CURRENT

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      Date
      2019-10-16
      Author
      MAHA, HAIDAR RAMZY
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      Abstract
      Electroplating is the process of coating metal using the help of an electric current through an electrolyte solution. The coating material is called the anode and the coated material is called the cathode. Electroplating itself aims to make a metal rust resistant, wear resistant, and decorative. The purposes of this study are to determine the effect of the electric current density on the thickness of the nickel chrome layer on the stod and to determine the effect of the electric current density on the corrosion resistance of the nickel chrome layer on the stod. In this study, stod specimens are made from cast iron coated with nickel chrome. The electric current densitiy variations are used at 7 A / dm2 and 9 A / dm2. The first coating process is carried out for 40 minutes in the nickel solution and the second coating is carried out for 30 seconds in the chrome solution. Layer thickness measurements are carried out using an Olympus BX53M series microscope. Whereas corrosion resistance testing refers to the ASTM B117 standard with a testing time of 12 hours. The results showed the highest layer thickness for the variation of current density of 7 A / dm2 is in the 8th segment with a value of 57 μm and the highest layer thickness for the variation of the current density of 9 A / dm2 is in the 8th segment with a value of 83 μm. While the percentage of rust that occurs in the two variations in current density of 2%. Rust in the current density variation of 7 A / dm2 occurs in the low current area and in the current density variation 9 A / dm2 occurs in the high current area.
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      http://repository.umy.ac.id/handle/123456789/30311
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      • Department of Mechanical Engineering

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