Studies on Corrosion inhibition of 90Cu10NiFe Alloy by Eco-Friendly Organic Compound ; Sodium Diethyl Dithio Carbamate(NaDDC) |
Gil-Bong Jung, Doo-Han Kim, Sung-Do Lee |
DTaQ |
친환경 유기화합물(NaDDC)에 의한 90Cu10NiFe합금의 부식억제 연구 |
정길봉, 김두한, 이성도 |
국방기술품질원 |
|
Abstract |
The improved properties of corrosion for 90Cu10NiFe alloy in natural seawater were explained by sodium diethyl dithio carbamate(NaDDC), namely organic compound, which is reagent for heavy metal extractions of waste water. The efficiency of NaDDC as corrosion inhibitor for 90Cu10NiFe alloy has been investigated in seawater after immersion in various concentrations of NaDDC solutions for 12~36hrs at pH 8.2 by weight loss test and electrochemical techniques including potentiodynamic polarization and SEM-EDS measurements. The results showed that the corrosion resistance of 90Cu10NiFe alloy improves with the increasing concentration of NaDDC but it did not improves with increasing time any more, so the highest inhibition efficiency was 93% at 100mg/L, 36hrs. The results obtained from weight losses and corrosion rates in polarization curve measurements were in good agreement. Therefore, it showed that NaDDC is a good inhibitor for copper corrosion of 90Cu10NiFe alloy. |
Key Words:
Corrosion Inhibitor, Chemisorption, Sodium Diethyl Dithio Carbamate, Inhibition Efficiency |
|