Inhibition of Corrosion of Carbon Steel in 3.5% NaCl Solution byMyrmecodia PendansExtract

Abstract

Inhibitor is a substance that is added to the corrosive media to inhibit corrosion rate. Organic inhibitors are preferred to inorganic ones since they are environmentally friendly. One of the organic compounds which is rarely reported as a corrosion inhibitor isMyrmecodia Pendans. The organic compounds can be adsorbed on the metal surface and block the active surface to reduce the rate of corrosion. In this study, the used pipe was carbon steel API 5L Grade B with 3.5% NaCl solution as the corrosion medium. The objective of this research was to analyze the inhibition mechanismMyrmecodia Pendanstowards carbon steel in a corrosion medium. Concentration variations of extractMyrmecodia Pendanswere 0–500 ppm. Fourier Transform Infrared (FTIR) was used for chemical characterization ofMyrmecodia Pendans. Polarization and Electrochemical Impedance Spectroscopy (EIS) were used to measure the corrosion rate and behaviour. From the electrochemical measurements, it was found that the addition of 400 mg/L inhibitor gave the highest inhibition efficiency.Myrmecodia Pendansacted as a corrosion inhibitor by forming a thin layer on the metal surface.

A peony-leaves-derived liquid corrosion inhibitor: protecting carbon steel from NaCl

“…This shows that PLS inhibits corrosion by mostly blocking the cathodic active sites (58). In fact, PLS is oxidized and acts as the anodic compared to steel (37). The increase in the cathodic Tafel slope also indicates that the addition of PLS changes the mechanism of the reduction reaction (59).…”

“…The most updated articles have used Theobroma cacao (32), Kudingcha (33), Origanum majorana (34), Morinda citrifolia (35), Neem leave (36), and Myrmecodia pendans (37). Yetri et al (32) evaluated the corrosion inhibition behavior of T. cacao peels extract on mild steel in 1.5 M NaCl.…”

“…The corrosion rate was least with 5 vol.% extract and increased with increase in extract concentration based on weight loss test. Pradityana et al (37) used M. pendans extract as a green corrosion inhibitor for carbon steel in 3.5% NaCl Solution. The highest inhibition efficiency occurred in the presence of 400 mg/L extract.…”

Corrosion Inhibition of Carbon Steel Using Palm Oil Leaves Extract

“…The electrochemical study was carried out using a potentiostat and connected to a computer for data analysis. The experiments were performed using a cell with a three-electrode system consisting of a platinum electrode as the reference electrode and carbon steel as the working electrode and counter electrode [10].…”

Sarang Semut (Myrmecodia Pendans) Extract as a Green Corrosion Inhibitor for Mild Steel in Acid Solution

“…Therefore, organic inhibitors are preferred as an alternative for corrosion inhibitors due to their wide availability, low cost of production, and environmental friendliness. Sarang semut is one of many local natural ingredients that appear to have excellent potential as an organic inhibitor adding an extract of this substance into a solution of NaCl at 3.5% showed inhibition efficiency of about 90% (Pradityana et al, 2014;Pradityana et al, 2016). Sarang semut, widely known as Myrmecodia pendans, is an epiphytic plant that grows naturally in Papua.…”