scholarly journals Corrosion protection mechanism of Ce4+/organic inhibitor for AA2024 in 3.5% NaCl

RSC Advances ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 2227-2240 ◽  
Author(s):  
Mohamed Gobara ◽  
Ahmad Baraka ◽  
Robert Akid ◽  
Mahmoud Zorainy
Keyword(s):  
Corrosion Protection ◽  
Protection Mechanism ◽  
Organic Inhibitor

Proposed corrosion protection mechanism of Ce4+/ organic inhibitor for AA2024.

scholarly journals Nephelium lappaceum Extract as an Organic Inhibitor to Control the Corrosion of Carbon Steel Weldment in the Acidic Environment

2021 ◽  
Vol 13 (21) ◽  
pp. 12135
Author(s):  
Femiana Gapsari ◽  
Djarot B. Darmadi ◽  
Putu H. Setyarini ◽  
Hubby Izzuddin ◽  
Kartika A. Madurani ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Weld Metal ◽  
Oxide Layer ◽  
Base Metal ◽  
Acidic Environment ◽  
Protection Mechanism ◽  
Steel Weldment ◽  
Nephelium Lappaceum ◽  
The Stability ◽  
Organic Inhibitor

Organic inhibitors have been considered as an effective way to control the corrosion of carbon steel weldment in an acidic environment. This work proposes a new green organic inhibitor made of extract of rambutan fruit (Nephelium lappaceum) peel and aims at analyzing its corrosion inhibitor properties and protection mechanism. Specimens of carbon steel weldment were tested for their corrosion by using electrochemical and immersion methods in 1M HCl solution containing 0 to 6 g/L of Nephelium peel (NP) extract. Results showed that, in the same solution, the corrosion rate was measured to be higher on the weld metal zone than that of base metal zone, which could be related to the coarser grain of the weld metal zone and the stability of the formed oxide layer. The addition of NP extract was found to increase the stability of the oxide layer, thus increasing the corrosion resistance of the specimens. The maximum inhibition efficiency of the NP extract was reached at 97% for weld metal with 5 g/L of extract, at 80% for the heat affected zone with 5 g/L, and at 70% for base metal with 4 g/L. This work reveals the particularity of different weldment zones to the different needs of inhibitor concentration for obtaining the optimum corrosion protection.

scholarly journals Corrosion Protection Mechanism of Polyaniline Blended Organic Coating on Steel

2009 ◽  
Vol 156 (4) ◽  
pp. C127 ◽  
Author(s):  
S. Sathiyanarayanan ◽  
R. Jeyaram ◽  
S. Muthukrishnan ◽  
G. Venkatachari
Keyword(s):  
Corrosion Protection ◽  
Organic Coating ◽  
Protection Mechanism

Corrosion protection of steel with DMEA-based organic inhibitor

2013 ◽  
Vol 44 ◽  
pp. 507-513 ◽  
Author(s):  
E. Rakanta ◽  
Th. Zafeiropoulou ◽  
G. Batis
Keyword(s):  
Corrosion Protection ◽  
Organic Inhibitor

Research Progress in Protective Organic Silane Films

2011 ◽  
Vol 306-307 ◽  
pp. 1537-1540
Author(s):  
Xiao Li Ran ◽  
Tian Yi Li
Keyword(s):  
Surface Treatment ◽  
Corrosion Protection ◽  
Metal Surface ◽  
Research Progress ◽  
Treatment Technique ◽  
Silane Treatment ◽  
Protection Mechanism ◽  
Phosphate Treatment

The silane treatment is a new kind of metal surface treatment technique. Compared with the traditional chromate and phosphate treatment, organic silane treatment is friendly to environment. In this paper, the structure, classification and corrosion protection mechanism of silane films were introduced. The application and research progress of protective organic silane films were reviewed．The prospect of organic silane treatment technique was put forward．

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