Table of Contents
Retracted

Journal of Metallurgy has retracted the article titled “Inhibition Effect of Substituted Thiadiazoles on Corrosion Activity of N80 Steel in HCl Solution” [1]. The article was found to contain images reused in several other articles published by Mahendra Yadav and colleagues. The details of the reuse of images are as follows:

Figure 9(b) is similar to Figure 11b in [2], Figure 17b in [3], Figure 14b in [4], and Figure 5b in [5]. Figure 9(c) is similar to Figure 11c in [2], Figure 17c in [3], and Figure 14c in [4]. In particular, Figure 9 in [1] shares the same image of a sample in HCl as Figure 11 in [2] and the same image in the presence of an inhibitor, but these represent different inhibitors in each article, AMPT, and BAL, respectively.

We asked the authors to provide the underlying uncropped and unadjusted scanning electron microscopy (SEM) images, the raw data, and details of how the experiments were conducted.

The corresponding author, Dr. Yadav, said the SEM work was outsourced but did not give details on where, when, or by whom this work was performed. The equipment is described as a “JEOL JSM-6380 LA analytical scanning electron microscope” in this article. However, there is no description of the scanning electron microscope in [2] and in [6] it is described as a “Scanning Electron Microscope model SEM Jeol JSM-5800.” These are not the same model of microscope, despite these articles sharing some of the same SEM images.

Dr. Yadav provided us with replacement figures. However, they were identical for two of the articles, [1, 6], despite representing experiments with the inhibitors AMPT and ODAEODI, respectively. We were not told how these images were generated, the images were of low resolution, and the text in the images was illegible.

The corresponding author agreed to retraction and we have asked the institution to formally investigate.

View the full Retraction here.

References

  1. M. Yadav, S. Kumar, and D. Behera, “Inhibition Effect of Substituted Thiadiazoles on Corrosion Activity of N80 Steel in HCl Solution,” Journal of Metallurgy, vol. 2013, Article ID 256403, 14 pages, 2013.
  2. M. Yadav, S. Kumar, and P. N. Yadav, “Corrosion Inhibition of Tubing Steel during Acidization of Oil and Gas Wells,” Journal of Petroleum Engineering, vol. 2013, Article ID 354630, 9 pages, 2013.
  3. M. Yadav, U. Sharma, and P. N. Yadav, “Isatin compounds as corrosion inhibitors for N80 steel in 15% HCl,” Egyptian Journal of Petroleum, vol. 22, no. 3, pp. 335–344, 2013.
  4. M. Yadav, U. Sharma, and P. Yadav, “Corrosion inhibitive properties of some new isatin derivatives on corrosion of N80 steel in 15% HCl,” International Journal of Industrial Chemistry, vol. 4, no. 1, p. 6, 2013.
  5. M. Yadav, P. N. Yadav, and U. Sharma, “Substituted imidazoles as corrosion inhibitors for N80 steel in hydrochloric acid,” Indian Journal of Chemical Technology, vol. 20, pp. 363–370, 2013.
  6. M. Yadav, S. Kumar, U. Sharma, and P. N. Yadav, “Substituted amines as corrosion inhibitors for N80 steel in 15%HCl,” Journal of Materials and Environmental Science, vol. 4, no. 5, pp. 691–700, 2013.
Journal of Metallurgy
Volume 2013, Article ID 256403, 14 pages
http://dx.doi.org/10.1155/2013/256403
Research Article

Inhibition Effect of Substituted Thiadiazoles on Corrosion Activity of N80 Steel in HCl Solution

Department of Applied Chemistry, Indian School of Mines, Dhanbad 826004, India

Received 29 November 2012; Revised 2 March 2013; Accepted 18 March 2013

Academic Editor: Elena V. Pereloma

Copyright © 2013 M. Yadav et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The inhibition effect of some prepared compounds, namely, thiadiazole derivatives, on N80 steel corrosion in 15% HCl solutions has been studied by using the weight loss, electrochemical polarization, and electrochemical impedance spectroscopy techniques. It was found that the inhibition efficiency of the thiadiazole derivatives, namely, 2-amino-5-(4-methoxyphenyl)-1,3,4-thiazole (AMPT), 2-amino-5-phenyl-1,3,4-thiazole (APT), and 2-amino-5-(4-chlorophenyl)-1,3,4-thiazole (ACPT), increases with the increase in concentration. Inhibition efficiency follows the order AMPT > APT > ACPT. The effect of temperature on the corrosion was investigated by the weight loss method, and some thermodynamic parameters were calculated. The inhibitive action may be attributed to the adsorption of inhibitor molecules on the active sites of the metal surface following Langmuir adsorption isotherm. Polarization measurements indicated that thiadiazole derivatives act as mixed-type corrosion inhibitor. The adsorption of thiadiazole derivatives on N80 surface exposed to inhibitor-containing solutions was confirmed using SEM and FT-IR spectra.