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Optimizing the Corrosion Parameters and Assessing Corrosion Inhibitions for Cast Cu45Mn25Al15Fe5Cr5Ni5 HEA in Nitric Acid Solution via DOE and RSM Analysis

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Title Optimizing the Corrosion Parameters and Assessing Corrosion Inhibitions for Cast Cu45Mn25Al15Fe5Cr5Ni5 HEA in Nitric Acid Solution via DOE and RSM Analysis
 
Creator Gaber, Ghalia A
Aly, Hayam A
Abdelghafar, Khaled A
Mohamed, Lamiaa Z
 
Subject Cu45Mn25Al15Fe5Cr5Ni5 HEA
Corrosion inhibition
Corrosive media
Microstructure
Experimental correlations
 
Description 897-910
The corrosion performance of the cast Cu45Mn25Al15Fe5Cr5Ni5 HEA was examined in HNO3 solutions of varying
concentrations (0.5%, 1%, 5%, and 10%). The microstructure and elemental composition of the alloy were examined using
scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDX). Corrosion behavior was assessed through
the weight-loss method at room temperature. To gain a thorough understanding of the corrosion parameters, both statistical
analysis and interaction plots were utilized. Central composite design (CCD) was applied to investigate the primary and
interaction effects of these parameters on the response. The optimal parameters for maximizing output were determined.
Response Surface Methodology (RSM) with conditions of 24 h, 5% HNO3 concentration, and a pH of 0.248 predicted a
maximum fit of 81.64%. RSM also allows for more detailed analyses of the individual and interaction effects between the
variables. The corrosion rate (CR) increased with higher HNO3 concentrations. When 0.5% HNO3was used, the inhibitor
additions of Nano-TiO2, Nan-SiO2, or Nano-ZnO resulted in decreased CR values from 1.04 mm/y to 0.11, 0.12, or 0.22
mm/y, respectively.
 
Date 2024-10-03T11:20:29Z
2024-10-03T11:20:29Z
2024-10
 
Type Article
 
Identifier 0975-0959 (Online); 0301-1208 (Print)
http://nopr.niscpr.res.in/handle/123456789/64677
https://doi.org/10.56042/ijpap.v62i10.11811
 
Language en
 
Publisher NIScPR-CSIR,India
 
Source IJPAP Vol.62(10) [October 2024]