# Expression of concern: Experimental and surface morphological studies of corrosion inhibition on carbon steel in HCl solution using some new hydrazide derivatives

## TL;DR

This paper addresses concerns about a study on using hydrazide derivatives to inhibit corrosion on carbon steel in HCl solution.

## Contribution

The paper raises concerns about the validity or reliability of previously published corrosion inhibition experiments.

## Key findings

- The paper expresses concern about the experimental and surface morphological study findings.
- It questions the conclusions drawn from the use of new hydrazide derivatives as corrosion inhibitors.

## Abstract

Expression of concern for ‘Experimental and surface morphological studies of corrosion inhibition on carbon steel in HCl solution using some new hydrazide derivatives’ by Abd El-Aziz S. Fouda et al., RSC Adv., 2021, 11, 13497–13512, https://doi.org/10.1039/d1ra01405f.