Pengaruh Penambahan Serbuk Nano-Tio2 Pada Proses Pengecatan Baja ST 37 Untuk Meningkatkan Ketahanan Terhadap Korosi

Romadhon, Syarifudin Hidayatur (2025) Pengaruh Penambahan Serbuk Nano-Tio2 Pada Proses Pengecatan Baja ST 37 Untuk Meningkatkan Ketahanan Terhadap Korosi. Undergraduate thesis, Politeknik Negeri Jember.

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Abstract

Corrosion is one of the main problems in ST 37 steel material used in various industries. To improve corrosion resistance, this study examines the use of epoxy paint with TiO2 nano powder mixture as a protective coating on ST 37 steel immersed in sulfuric acid solution. The variations used include 0%, 1%, 3%, and 5% TiO2 nano powder. The results showed that the addition of TiO2 nano powder can improve corrosion resistance to a certain extent. In the specimen without powder (0%), the highest corrosion rate was recorded at 1.19 g/m2.h, while the 1% and 3% variations decreased significantly to 0.357 g/m2.h and 0.238 g/m2.h, respectively, but in the 5% variation. The corrosion rate increased to 0.417 g/m2.h, presumably due to excessive coating thickness and uneven distribution. From the results of this study, it can be concluded that the optimal composition to improve corrosion resistance is 3% TiO2 nano powder, while the use of more than 3% can reduce the effectiveness of protection due to the imperfect distribution of particles in the paint layer.

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