Construction of a highly-effective/sustainable corrosion protective composite nanofilm based on Aminotris(methylphosphonic acid) and trivalent cerium ions on mild steel against chloride solution

2020 ◽  
Vol 261 ◽  
pp. 119838 ◽  
Author(s):  
Ali Dehghani ◽  
Bahram Ramezanzadeh ◽  
Fatemeh Poshtiban ◽  
Ghasem Bahlakeh
2012 ◽  
Author(s):  
Zalilah Sharer Sahir ◽  
John Malcolm Sykes

Degradasi pada besi bersalut cat dari segi gelembung yang terbentuk telah dikaji selepas direndam di dalam larutan 3% natrium klorida dan 3% ammonium klorida. Imbasan probe Kelvin (SKP) telah digunakan untuk menghasilkan peta keupayaan kimia–elektro bagi mengenal pasti kawasan anod dan katod dibawah gelembung dan kawasan persekitarannya. Bagi gelembung yang terhasil pada panel yang direndam dalam larutan 3% sodium klorida, peta upaya SKP menunjukkan gelembung yang terbentuk adalah di kawasan katod yang disebabkan oleh alkali, dimana kawasan anod juga dilihat terbentuk berdekatan. Walhal bagi peta upaya SKP untuk gelembung yang terhasil pada panel yang direndam di dalam larutan 3% ammonium klorida menunjukkan kehadiran kawasan katod dikelilingi oleh kawasan anod. Kata kunci: Cat organik; imbasan probe Kelvin; gelembung The degradation of a coated metal in term of the area underneath a blister has been studied after being immersed in 3% sodium chlorida and 3% ammonium chloride solution. Scanning Kelvin probe (SKP) was used to map electrochemical potentials, identifying anodic and cathodic regions underneath a blister and the surrounding coating. For blisters formed on coated panel immersed in sodium chlorida solution, SKP potential map reveals that the blister has formed at a cathode due to alkali but anodes form nearby (not remote). Meanwhile SKP potential map for blister formed on coated panel in 3% ammonium chloride reveals the presence of cathodic regions within the anodic areas. Key words: Organic coating; scanning Kelvin Probe; blister


2020 ◽  
Vol 5 (4) ◽  
pp. 429-435
Author(s):  
Sandra Viveros ◽  
Carmina Menchaca ◽  
Miguel A. Hernandez ◽  
Alba Covelo ◽  
Jorge Uruchurtu

Acrylonitrile-butadiene-styrene (ABS) is a common waste polymer by-product from industry. Outdated medicines are usually discarded and could be a valuable asset for other applications such as metallic corrosion inhibition. The aims of the present work is to manufacture a recycled ABS polymer doped with outdated lansoprazole medicament as a corrosion protection composite coating. It was applied to mild steel and immersed in chloride solution, and evaluate its possible corrosion protection properties using different electrochemical techniques. The manufactured coating presents good corrosion protection properties showing an 80% efficiency as a function of time of immersion in the aggressive solution.


2012 ◽  
Vol 38 (9) ◽  
pp. 2309-2325 ◽  
Author(s):  
S. Belkaid ◽  
K. Tebbji ◽  
A. Mansri ◽  
A. Chetouani ◽  
Belkheir Hammouti

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