Corrosion Behavior of Mild Steel in Seawater from Karangsong & Eretan of West Java Region, Indonesia

Abstract

<p><em>The corrosion behavior of mild carbon steel, has been investigated using an immersion test and energy-dispersive X-ray spectroscopy in solutions from the sites of Karangsong and Eretan, Northern Coast of West Java Region, Indonesia. As reference, solutions of 3.5% and 5% NaCl were prepared. Salinity, conductivity, and total dissolved solids (TDS) were measured. It was found that uniform corrosion observed on mild steel during the immersion test. Corrosion resistance of alloys decreases with increasing exposure time in natural seawater solutions. Since magnitudes of conductivity, salinity and TDS of all test solutions are similar, it implied that chloride ion have primary role for inducing the corrosion risk of mild steel. That parameter hinders the formation of stable passive film on the surface of corroded mild steel.</em></p><p><strong>Key words:</strong> <em>conductivity; immersion test; mild steel; salinity; seawater; total dissolved solids</em>.</p>

A Field Study of Atmospheric Corrosion of Carbon Steel after Short Exposure in Pelabuhan Ratu, West Java Province, Indonesia

“…Where CR = Corrosion rate in mills per year (mpy); ∆W = Weight loss in grams; K = Constant; d = metal density in g/cm 3 ; t = exposure time (day). The morphology of corroded surface, the distribution of elemental composition for rust product and various phase of corrosion products were identified by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD), respectively.…”

“…Moreover, the effect of pollutants, such as chloride and sulfur can enhance significantly the corrosion attack [2]. Sundjono et al [3] and Priyotomo et al [4] showed the detrimental effect of chloride with the increase of corrosion attack on carbon steel as represent of offshore structure. Furthermore, in the Atmospheric Corrosion of Carbon Steel after Short Exposure Gadang PRIYOTOMO et al http://wjst.wu.ac.th marine atmosphere, the main role of chloride refers to the atmospheric salinity.…”

Atmospheric Corrosion Behavior of Carbon Steel and Galvanized Steel after Exposure in Eretan and Ciwaringin, West Java Province, Indonesia

“…The airborne salt that contains chloride ion was dissolved in a thin electrolyte layer on the metallic surface during the condensation process, where the conductivity of it increases significantly. The higher conductivity of electrolytes could contribute to accelerating the corrosion process of metals [18][19]. In current work, the airborne salinity level was represented by the deposition rate of chloride refers to International Standard Organization (ISO) 9223:2012 [20].…”

Deteksi Proses Korosi Pada Baja Dengan Menggunakan Lapisan Akrilik Termodifikasi Phenolphthalein

“…Penelitian ini menggunakan lapisan cat organic berbahan dasar akrilik sebagai binder. Cat berbasis akrilik merupakan cat kering cepat dimana pengikatnya merupakan senyawa polimer gugus akrilik [12]. Umumnya, cat berbasis akrilik ini dapat larut dalam media air (water borne acrylic) namun cat ini bersifat tahan air saat kering di udara terbuka.…”

“…Namun, fenomena retak lapisan juga terjadi saat pengaplikasian. Retak lapisan akrilik yang menembus hingga logam dasar dapat terjadi dan diperparah dengan kondisi lingkungan garam sodium klorida (NaCl) dan berkelembaban diatas 80% [16].…”