Wahyu Adharis, Kiki (2023) Pengaruh Variasi Pelapisan Graphite Pada Pelat Stainless Steel 304 Menggunakan Metode Screen Printing Sebagai Pelat Konduktor Polimer. Other thesis, Fakultas Teknik Mesin.

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Abstract

Fuel cell is an electrochemical conversion device to produce electricity from the reaction of hydrogen and oxygen. One of the methods chosen in the manufacture of polymer conductor plates is screen printing, where screen printing is a printing technique in which the printing process uses a screen with a certain density. This study aims to obtain the most optimal sample values ??and variations of stainless steel plate coating and results from data collection on electrical conductivity, microstructure and surface bending test strength of stainless steel 304 plate. In this study, the material to be coated is a 304 stainless steel plate, the variations of the graphite coating are without coating, 3 layers, 5 layers and 7 layers. The results of the graphite layer thickness occurred in a variation of 7 layers (sample 4) namely 2340.08 µm. From the results of the electrical conductivity test, the highest resistivity value was obtained for sample 1 (without coating), namely 0.33 ?, while the highest conductance and conductivity values ??were obtained for sample 4 (7 layers of graphite variation), namely 8.33 S and 2.77 S/cm. This is because the higher the number of layers is able to provide greater electrical capacity resulting in an increase in the value of conductance and electrical conductivity. The optimal bending strength test results occur in the sample 3 (variation of 5 layers of graphite) which is 38.86MPa. This is because the more number of layers is able to provide a bond between the surface of the 304 stainless steel plate which is higher. However, the high number of layers does not mean good for the value of bending strength, because the deposition of graphite on the surface of the polymer conducting plate substrate decreases.

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