scholarly journals Henna Leaves Extract as Green Corrosion Inhibitor for 304 Stainless Steel in Sulphuric Acid Solution

2021 ◽  
Vol 9 (VII) ◽  
pp. 2212-2214
Author(s):  
Dr. Abhay Singh
Keyword(s):  
Stainless Steel ◽  
Corrosion Inhibitor ◽  
Corrosion Inhibition ◽  
Inhibition Efficiency ◽  
Sulphuric Acid Solution ◽  
Sem Analysis ◽  
304 Stainless Steel ◽  
Lawsonia Inermis ◽  
Green Corrosion Inhibitor ◽  
Corrosion Inhibition Efficiency

The corrosion inhibition of 304 stainless steel in 1.0 M H2SO4 has been investigated in the presence of Henna leaves (Lawsonia Inermis) extract using weight loss measurement and Scanning Electron Microscope (SEM) analysis. The study indicates that the corrosion inhibition efficiency increases with the increase in concentration of Henna leaves extract and decreases with increase in temperature. SEM analysis indicated the changes in metal surface morphology in the presence of inhibitor. The result obtained indicated that Henna leaves extract act as an efficient green corrosion inhibitor for 304 Stainless Steel.

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.

scholarly journals Effect of Silver Nanoparticles on the Corrosion Behaviour of Mild Steel and 316 Austenitic Stainless Steel in 0.5 M H2SO4

2019 ◽  
Vol 4 (4) ◽  
pp. 4-10
Author(s):  
Oluwatoyin Adenike Olaseinde ◽  
Olajesu F. Olarenwaju ◽  
Silifa T. Mohammed
Keyword(s):  
Silver Nanoparticles ◽  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Mild Steel ◽  
Corrosion Inhibition ◽  
Potentiodynamic Polarization ◽  
Ipomoea Batatas ◽  
Inhibition Efficiency ◽  
Corrosion Behaviour ◽  
Corrosion Inhibition Efficiency

The research investigated the effect of silver nanoparticles on the corrosion behaviour of Mild steel and 316 Austenitic stainless steel in 0.5M H2SO4 using the potentiodynamic polarization method. The nanoparticles were synthesized from the sweet potato (Ipomoea batatas) plant extracts using Silver Nitrate (AgNO3) and were characterized using Atomic Adsorption Spectroscopy, Fourier Transform Infrared Spectroscopy and the Ultraviolet Visible Spectroscopy Technique. The AAS results showed that the plant extract is eco-friendly as it does not contain heavy metals. The FTIR results showed the different functional groups present in the extracts obtained from the different parts of the plant to be Alcohol O-H, Nitrile C≡N, Alkyne C≡C, Alkene C=C and Benzene Ring C=C. The UV-Vis results showed the presence of phenolic compound which aided inhibition. The results from the potentiodynamic polarization showed that the nanoparticle obtained from the leaf has the highest corrosion inhibition efficiency and the corrosion inhibition efficiency increases as the concentration of inhibitors increases.

scholarly journals Analysis of the Anti-Corrosion Performance of Dextrin and Its Graft Copolymer on J55 Steel in Acid Solution

Processes ◽  
2021 ◽  
Vol 9 (9) ◽  
pp. 1642
Author(s):  
Mingxing Liu ◽  
Dayu Xia ◽  
Ambrish Singh ◽  
Yuanhua Lin
Keyword(s):  
Contact Angle ◽  
Corrosion Inhibitor ◽  
Corrosion Inhibition ◽  
Graft Copolymer ◽  
Inhibition Efficiency ◽  
Electrochemical Impedance ◽  
Inhibition Mechanism ◽  
Corrosion Inhibition Efficiency ◽  
Inhibition Performance ◽  
Hcl Solution

This paper studies the corrosion inhibition performance and mechanism of dextrin (Dxt) and its graft copolymer with caprolactam (Dxt-g-CPL) on J55 steel in 1 M HCl solution. Caprolactam is grafted and copolymerized with dextrin by a chemical synthesis method, to obtain a dextrin graft copolymer corrosion inhibitor. The composition of the synthesized graft copolymer was characterized by FTIR to identify whether the grafting was successful. Through weightlessness, electrochemical impedance spectroscopy (EIS), potentiodynamic polarization curve (TAFEL), scanning electrochemical microscope (SECM), scanning electron microscope (SEM), and contact angle experiments, the graft copolymer to J55 steel in 1 M HCl solution and the corrosion inhibition performance were evaluated. Moreover, we discuss its corrosion inhibition mechanism. The dextrin graft copolymer has good corrosion inhibition performance for J55 in 1 M HCl solution. When the concentration of the corrosion inhibitor increases, the corrosion inhibition efficiency will also increase. At a certain concentration, when the temperature rises, the corrosion inhibition efficiency will gradually decrease. When the concentration is 300 mg/L, it has a better corrosion inhibition effect, and the corrosion inhibition efficiency is 82.38%. Potential polarization studies have shown that Dxt-g-CPL is a mixed corrosion inhibitor, which inhibits both the cathode and the anode of the electrode reaction. SEM, SECM, and contact angle analysis results show that Dxt-g-CPL can significantly inhibit corrosion. Compared with Dxt, Dxt-g-CPL has a better inhibitory effect.

Synthesis and Characterization of New poly β-Lactam from poly acrolein and Study Corrosion Inhibition for Stainless steel in Hydrochloric Acid Solution

2021 ◽  
pp. 3039-3944
Author(s):  
Amaal S. Sadiq ◽  
Entesar O. Al-Tamimi
Keyword(s):  
Stainless Steel ◽  
Schiff Base ◽  
Corrosion Inhibition ◽  
Inhibition Efficiency ◽  
The Novel ◽  
Inhibition Effect ◽  
Organic Inhibitors ◽  
Corrosion Inhibition Efficiency ◽  
Loss Method

A new poly chain derivative of polyacrolein has been synthesized from the two basic precursors, polyacrolein and aromatic amine/substituted amine in chloroform to prepare poly Schiff base compounds (A1-A4). The novel poly subs.β-lactam derivative is obtained via coupling of poly schiff base with chloroacetyl chloride and trimethylamine (B1-B4). Newly synthesized compound was identified via spectral methods; their [13C-NMR, 1H-NMR, and FTIR] also measurement of some of its physical properties. Furthermore the inhibition effect of synthesized compounds (B1-B4) on the corrosion of stainless steel in 1N HCl was studied by wight loss method. The results of weight loss measurements showed that corrosion inhibition efficiency by increasing the concentration of organic inhibitors for stainless steel in 1M HCl solution at 30°C.

scholarly journals Evaluation of Lime Juice as Potential Green Corrosion Inhibitor Using Gravimetric and Electrochemical Studies

2020 ◽  
Vol 32 (8) ◽  
pp. 2055-2060
Author(s):  
S.J. Hepziba Magie Jessima ◽  
B.G. Rakesh ◽  
Moksha Muthappa ◽  
S. Subhashini
Keyword(s):  
Corrosion Inhibitor ◽  
Corrosion Inhibition ◽  
Inhibition Efficiency ◽  
Soluble Sugars ◽  
Electrochemical Studies ◽  
Lime Juice ◽  
Immersion Period ◽  
Optical Profilometer ◽  
Corrosion Inhibition Efficiency ◽  
Best Fit

Lime, a vibrant fruit of citrus family is known for its antioxidant as well as anti-microbial properties. The constituents of lime juice include organic acids, polyphenols, soluble sugars, vitamins, minerals and amino acids. These details prompted to experiment lime juice as corrosion inhibitor for mild steel in 1 M HCl. The weight loss studies showed that the corrosion inhibition efficiency increased with increase in concentration of the lime juice as well as increase of temperature. The inhibition efficiency reached a maximum of 96% for an immersion period of 24 h. The best fit for the adsorption process obeyed Langmuir isotherm. The negative value of ΔGads showed the spontaneity of the corrosion inhibition process. The corrosion inhibition efficiency of the acidified lime juice was further validated by electrochemical studies namely AC impedance studies and potentiodynamic polarization studies. The surface morphology study was performed used optical profilometer.

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