Corrosion Inhibition of Polyethylene Glycol for Magnesium Alloy AZ91 at Different Temperatures

2014 ◽  
Vol 1015 ◽  
pp. 692-695
Author(s):  
Wei Shang ◽  
Zhou Lan Yin ◽  
Yu Qing Wen ◽  
Xu Feng Wang
Keyword(s):  
Polyethylene Glycol ◽  
Magnesium Alloy ◽  
Corrosion Inhibition ◽  
Inhibition Efficiency ◽  
Nacl Solution ◽  
Alloy Az91 ◽  
Magnesium Alloy Az91 ◽  
Polyethylene Glycol 200 ◽  
Different Temperatures ◽  
Corrosion Inhibition Efficiency

the corrosion inhibition of polyethylene glycol 200 for magnesium alloy AZ91 in 1% NaCl solution at different temperatures are studied. The morphology of the sample at 25°C is analyzed by SEM. And CHI600C electrochemistry workstation is employed to investigate the corrosion inhibition of the samples. The results show that the corrosion inhibition efficiency of polyethylene glycol 200 to the magnesium alloy AZ91 is affected by temperature. Polyethylene glycol 200 has superior corrosion inhibition to the magnesium alloy at the temperature of 25°C.

scholarly journals New Aromatic Azo-Schiff as Carbon Steel Corrosion Inhibitor in 1 M H2SO4

2018 ◽  
Vol 34 (5) ◽  
pp. 2471-2476 ◽  
Author(s):  
Hamida Edan Salman ◽  
Asim A. Balakit ◽  
Ali Ahmed Abdulridha
Keyword(s):  
Weight Loss ◽  
Carbon Steel ◽  
Corrosion Inhibitor ◽  
Corrosion Inhibition ◽  
Potentiodynamic Polarization ◽  
Inhibition Efficiency ◽  
Steel Corrosion ◽  
Spectroscopic Techniques ◽  
Different Temperatures ◽  
Corrosion Inhibition Efficiency

A new aromatic Schiff base with azo linkage (AS) has been synthesized and characterized by FT-IR, 1H NMR and 13C NMR spectroscopic techniques. The new compound (AS) has been evaluated as carbon steel corrosion inhibitor at different concentrations (0.005, 0.01, 0.02, 0.04 and 0.08 mM) and different temperatures (303 – 333 K). The corrosion inhibition efficiency was studied by potentiodynamic polarization and weight loss measurements. The effects of concentration and temperature on the inhibition efficiency were studied by potentiodynamic polarization studies, the results showed that increasing concentration of AS increases the inhibition efficiency while increasing the temperature decreases it, the highest corrosion inhibition efficiency, 93.9% was recorded with 0.08 mM of AS at 313 K in 1 M H2SO4. Weight loss measurements showed that the inhibition efficiency reached 97.1% in the presence of AS (0.08 mM) at 313 K. The adsorption process was found to obey Langmuir isotherm, and the adsorption thermodynamic parameters were studied. Scanning electron microscope (SEM) was used to confirm the results.

Experimental and theoretical studies of 4,6-diamino-2-mercaptopyrimidine as a copper inhibitor in 3.5 wt% NaCl solution

RSC Advances ◽  
2016 ◽  
Vol 6 (18) ◽  
pp. 15210-15219 ◽  
Author(s):  
Zhi Cheng ◽  
Shi Mo ◽  
Jing Jia ◽  
Ji Feng ◽  
Hong Qun Luo ◽  
...  
Keyword(s):  
Corrosion Inhibition ◽  
Inhibition Efficiency ◽  
Copper Surface ◽  
Theoretical Studies ◽  
Nacl Solution ◽  
High Corrosion ◽  
Corrosion Inhibition Efficiency ◽  
Experimental And Theoretical Studies

4,6-Diamino-2-mercaptopyrimidine can be adsorbed on copper surface and exhibits a high corrosion inhibition efficiency in 3.5 wt% NaCl solution.

Corrosion Behavior of Magnesium Alloy AZ91 and Its MMC in NaCl Solution

1998 ◽  
Vol 16 (1-2) ◽  
pp. 43-52 ◽  
Author(s):  
W.M. Chan, ◽  
F.T. Cheng, ◽  
L.K. Leung, ◽  
R.J. Horylev, ◽  
T.M. Yue,
Keyword(s):  
Magnesium Alloy ◽  
Corrosion Behavior ◽  
Nacl Solution ◽  
Alloy Az91 ◽  
Magnesium Alloy Az91

Influence of sodium alginate inhibitor addition on the corrosion protection performance of AZ91D magnesium alloy in NaCl solution

2017 ◽  
Vol 64 (5) ◽  
pp. 486-491 ◽  
Author(s):  
Yan Li ◽  
Zhi Xin Ba ◽  
Yong Liang Li ◽  
Yan Ge ◽  
Xi Chang Zhu
Keyword(s):  
Corrosion Resistance ◽  
Magnesium Alloy ◽  
Synergistic Effect ◽  
Sodium Alginate ◽  
Corrosion Inhibition ◽  
Inhibition Efficiency ◽  
Nacl Solution ◽  
Adsorption Film ◽  
Content Type ◽  
Az91d Magnesium Alloy

Purpose This paper aims to investigate the inhibition effect of sodium silicate (SS), sodium alginate (SA) and sodium tungstate (ST) on the corrosion behavior of AZ91D magnesium alloy in 3.5 per cent NaCl solution through polarization curve test at room temperature, electrochemical impedance spectroscopy and weight loss measurement. Design/methodology/approach The influence of SA concentration on the inhibition efficiency of the corrosion inhibitor was mainly analyzed. The corrosion morphology and inhibition mechanism of the samples were also analyzed with scanning electron microscopy and energy-dispersive spectroscopy. Findings The results show that with the increase of SA concentration, the corrosion inhibition first increases and then decreases. When SA concentration is 0.03 mol/L, the inhibition efficiency is the highest, reaching 98 per cent. The adsorption film formed by SA and other deposition films produce a synergistic effect on the improvement of corrosion resistance of AZ91D magnesium alloy. Originality/value The adsorption film formed by SA with other deposition films produces a synergistic effect on the improvement of corrosion resistance of AZ91D magnesium alloy. With the increase of SA concentration, the corrosion inhibition first increases and then decreases. When the concentrations of SA, SS and ST are 0.03 mol/L, 0.015 mol/L and 0.02 mol/L, respectively, the inhibition efficiency of the inhibitor is the highest, reaching 98 per cent.

Study the Corrosion behavior of AA7051 Aluminum alloy at different temperatures and inhibitor concentration in Acidic medium

2021 ◽  
pp. 4977-4982
Author(s):  
Khudhair Abbas Kareem Al-Rudaini ◽  
Khulood Abid Saleh Al-Saadie
Keyword(s):  
Corrosion Inhibition ◽  
Inhibition Efficiency ◽  
Kinetic Equations ◽  
Milk Thistle ◽  
Linear Regression Coefficient ◽  
Langmuir Adsorption ◽  
Different Temperatures ◽  
Corrosion Inhibition Efficiency ◽  
Main Component ◽  
Mixed Type Inhibitor

This study will be investigating acidic corrosion of AA7051 alloy at a different temperature, and introduces milk thistle aqueous extract as a new and widely available green corrosion inhibitor. The electrochemical methods were used to measure weight loss, penetration loss, corrosion inhibition efficiency and other parameters. The data substituted in Langmuir adsorption isotherm as well as in kinetic equations. The finding exhibit high corrosion inhibition efficiency at 0.5g/L of milk thistle extract and the efficiency rose from around 72% at 293K to just over 86% at 333K. Langmuir model linear regression coefficient ( =0.98) and the slight change in corrosion potential refer to mixed-type inhibitor attach to the surface by chemisorption. FTIR spectra for crude extract supported by literatures shows the molecular structure of the main component of milk thistle extract and exhibit the O-H group as a major group participate in adsorption.

Adsorption and corrosion inhibition characteristics of two medicinal molecules

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Hydrochloric Acid ◽  
Corrosion Rate ◽  
Mild Steel ◽  
Corrosion Inhibition ◽  
Half Life ◽  
Thermodynamic Data ◽  
Inhibition Efficiency ◽  
Gravimetric Method ◽  
Corrosive Environment ◽  
Corrosion Inhibition Efficiency

The corrosion inhibition characteristics of two medicinal molecules phenylalanine and rutin on mild steel in 1.0M Hydrochloric acid were evaluated using gravimetric method. Corrosion inhibition efficiency of 83.78 and 90.40 % was obtained respectively after seven days. However, phenylalanine showed weak accumulative higher corrosion inhibition efficiency. The presence of both molecules in the corrosive environment reduced the corrosion rate constant and increased the material half-life. Thermodynamic data calculated suggests a spontaneous adsorption of the molecules on the mild steel’s surface.

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