The corrosion kinetics of cordierite-based ZrO2 composites obtained from natural zeolite in dilute HCl acid solution

2021 ◽  
pp. 002199832199675
Author(s):  
Betül Çıtak ◽  
Derya Kırsever ◽  
Aysun Ayday ◽  
Hamza Boussebha ◽  
A Şükran Demirkıran
Keyword(s):  
Mechanical Properties ◽  
Acid Solution ◽  
Natural Zeolite ◽  
Activation Energies ◽  
Acid Solutions ◽  
Corrosion Properties ◽  
Corrosion Kinetics ◽  
Weight Loss Method ◽  
Loss Method ◽  
Kinetics Of

Being a versatile ceramic, which can be used in various applications, cordierite has always been subject to optimization and research. Nevertheless, the corrosion resistance of the ceramic, synthesized from natural zeolite, has not been widely investigated. In this study, cordierite with 2:2:5 compositions of MgO/Al2O3/SiO2, respectively, was obtained from the natural zeolite. Following sintering at 1250°C for 1 h, of cordierite with 10 and 20% amount of added zirconia (ZrO2), the mechanical properties exhibited proportional amelioration, accompanied by an enhanced homogeneity and reduced microcracks. The corrosion properties were investigated via the weight loss method in 2 vol. % and 5 vol. % HCl acid solutions maintained for up to 480 h at 25, 50, and 75°C. The corrosion kinetics were evaluated from corrosion curves, followed by a calculation of the activation energies of corrosion. The results revealed that ZrO2 addition enhances the resistance, with an optimum observed for the 10% zirconia doped cordierite samples, with varying activation energies between 113 kJ/mol for 5 vol. % HCl acid solution and 119 kJ/mol for 2 vol. % HCl acid solution.

scholarly journals Study on the Corrosion Kinetics of Iron in Acid and Base Medium

2011 ◽  
Vol 8 (s1) ◽  
pp. S358-S362 ◽  
Author(s):  
D. B. Patil ◽  
A. R. Sharma
Keyword(s):  
Weight Loss ◽  
Nitric Acid ◽  
Sulphuric Acid ◽  
Potassium Hydroxide ◽  
Corrosion Kinetics ◽  
Acid And Base ◽  
Weight Loss Method ◽  
Loss Method ◽  
Corrosion Of Iron ◽  
Kinetics Of

The kinetics of corrosion of iron in acid and base medium by weight loss method was investigated. The corrosion kinetics was studied in sulphuric acid, nitric acid and potassium hydroxide by weight loss method at different time intervals at 25.0°C to 40.0°C. The result showed that the corrosion rate vary with different time interval and different acid – base concentration. The order of corrosion of iron in these media was found to be nitric acid > sulphuric acid > potassium hydroxide. Further the specific reaction rate, half-life time, energy of activation, entropy of activation and enthalpy of activation was also evaluated.

Anti-Corrosion Properties of Composite WC-Ni Based Brazing Coatings

2011 ◽  
Vol 347-353 ◽  
pp. 1605-1608
Author(s):  
Da Quan Zhang ◽  
Li Xin Gao ◽  
Huan Wu
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
316L Stainless Steel ◽  
Vacuum Furnace ◽  
Corrosion Properties ◽  
Mixed Powder ◽  
Weight Loss Method ◽  
Loss Method ◽  
Superior Corrosion Resistance ◽  
Scanning Electron

The flexible metallic cloth was made of mixed powder consisting of WC and organic blend. A brazing coating was obtained through the high temperature brazing of the metallic cloth in vacuum furnace. The anti-corrosion of the brazing coating was investigated by weight-loss method and electrochemical measurements. The surface morphology observation was conducted by the scanning electron microscopy (SEM). The results show that the composite coating has superior corrosion resistance compared with 316L stainless steel.

scholarly journals Mechanism of Inhibitive Action of Dl-Methionine Towards the Corrosion of Mild Steel in Hydrochloric Acid Solution

2021 ◽  
Vol 9 (10) ◽  
pp. 887-890
Author(s):  
Dr. Abhay Singh
Keyword(s):  
Hydrochloric Acid ◽  
Acid Solution ◽  
Mild Steel ◽  
Hydrochloric Acid Solution ◽  
Inhibition Efficiency ◽  
Sem Analysis ◽  
Weight Loss Method ◽  
Loss Method ◽  
Inhibitive Action ◽  
Scanning Electron

Abstract: DL-methionine has been investigated as inhibitor for the corrosion of mild steel in 1.0M hydrochloric acid solution using weight loss method and Scanning Electron Microscope (SEM) analysis. The investigated results showed that the inhibition efficiency increases with the increase in concentration of the inhibitor and decreases with the increase in temperature. SEM analysis indicated that the metal surface was in a better condition in the presence of inhibitor than the specimen exposed in the absence of the inhibitor. DL-methionine acted as a very good inhibitor and is also environmentally friendly, non -toxic, biodegradable and relatively cheap. Keywords: DL-methionine, mild steel, SEM, Corrosion inhibitor.

Laju Korosi Pada Baja Karbon Sedang Akibat Proses Pencelupan Pada Larutan Asam Sulfat (H2SO4) dan Asam Klorida (HCl) dengan Waktu Bervariasi

2020 ◽  
Vol 2 (1) ◽  
pp. 13-21
Author(s):  
Miduk Tampubolon ◽  
Roy Ganda Gultom ◽  
Lestina Siagian ◽  
Partahi Lumbangaol ◽  
Charles Manurung
Keyword(s):  
Sulfuric Acid ◽  
Carbon Steel ◽  
Corrosion Rate ◽  
Acid Solution ◽  
Sulfuric Acid Solution ◽  
Medium Carbon Steel ◽  
Medium Carbon ◽  
Long Time ◽  
Weight Loss Method ◽  
Loss Method

An experiment has been conducted to determine corrosion rate of medium carbon stell with sulfuric acid solution, Aquades 90,2% + H2SO4 9,8% and hydrochloric acid solution, Aquades 96,8% + HCl 3,2%. By using weight loss method, if medium carbon steel dipped into sulfuric acid solution then the corrosion rate is faster than it dipped into hydrochloric solution. If medium carbon steel dipped in a long time than the corrosion rate slowing down.

FORMATION AND STABILITY OF HYPOBROMOUS ACID IN PERCHLORIC ACID SOLUTIONS OF BROMINE AND BROMATE IONS

1951 ◽  
Vol 29 (8) ◽  
pp. 666-677 ◽  
Author(s):  
R. H. Betts ◽  
Agnes N. Mackenzie
Keyword(s):  
Acid Solution ◽  
Perchloric Acid ◽  
Chemical Data ◽  
Acid Solutions ◽  
Hypobromous Acid ◽  
Kinetics Of

Spectral and chemical data are presented which show that bromine and bromate ion in acid solution are unstable with respect to, formation of hypobromous acid. At higher concentrations of hypobromous acid, the reaction is reversed, and this species decomposes relatively rapidly to bromine and bromate. Some aspects of the kinetics of these reactions are described, from which deductions are made regarding possible mechanisms of the two processes.

Effects of Alchornea cordifolia leaf extract on the mechanical properties of mild steel in acidic medium

2021 ◽  
Vol 19 (3) ◽  
pp. 55-62
Author(s):  
E. Oparaku ◽  
E. Osarolube
Keyword(s):  
Mechanical Properties ◽  
Mild Steel ◽  
Sulphuric Acid ◽  
Acidic Medium ◽  
Leaf Extract ◽  
Substantial Improvement ◽  
Sulphuric Acid Solution ◽  
The Third ◽  
Weight Loss Method ◽  
Loss Method

The effect of Alchornea Cordifolia leaf extract on the mechanical properties of mild steel in acidic medium was studied using weight loss method. The first sample was not introduced to any medium. It served as the control1 sample. The second sample was introduced to a medium containing 0.2M Sulphuric acid solution in the absence of the Alchornea Cordifolia leaves extract for 21 days, while the third sample was immersed in a vessel containing 0.2M sulphuric2 acid and 0.5g/L of Alchornea Cordifolia leaves extract as an inhibitor for 21 days. Results obtained showed a substantial improvement on the mechanical properties of mild steel exposed to the medium with the inhibitor. Keywords: Mechanical Properties, Corrosion, Inhibition, Alchornea Cordifolia, Sulphuric acid

Novel Compounds of Imidazole Derivatives as Effective Corrosion Inhibitors for Mild Steel in Hydrochloric Acid Solution

2020 ◽  
pp. 132-155
Author(s):  
Moussa Ouakki ◽  
M. Galai ◽  
Z. Aribou ◽  
M. Rbaa ◽  
B. Lakhrissi ◽  
...  
Keyword(s):  
Weight Loss ◽  
Acid Solution ◽  
Mild Steel ◽  
Steel Surface ◽  
Langmuir Adsorption Isotherm ◽  
Electrochemical Tests ◽  
Imidazole Derivatives ◽  
Weight Loss Method ◽  
Loss Method ◽  
Inhibition Performance

The inhibition performance of two imidazole derivatives, IM-Cl and IM-CH3, on the corrosion behavior of MS in 1M HCl acid solution was studied through weight loss method and electrochemical tests. The results obtained from the electrochemical methods show that inhibition efficiency increases with the increase of inhibitors concentration. The adsorption of inhibitors on the mild steel surface obeys Langmuir adsorption isotherm. The corrosion protection was once also investigated with the aid of UV–Vis spectrophotometry. SEM-EDX was performed and discussed for surface study of uninhibited and inhibited mild steel samples.

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