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Citation: LIAO Qiang-Qiang, LI Wei, LI Yi-Jiu, ZHOU Qi. Corrosion Inhibition Behavior of Brass Tube by Sodium Diethyldithiocarbamate[J]. Chinese Journal of Applied Chemistry, ;2009, 26(10): 1227-1231. shu

Corrosion Inhibition Behavior of Brass Tube by Sodium Diethyldithiocarbamate

LIAO Qiang-Qiang ^a,b,, ,
LI Wei ^a ,
LI Yi-Jiu ^c ,
ZHOU Qi ^d

1.
a Department of Chemical Engineering, Shanghai University, Shanghai 201800;
2.
b Key Laboratory of Shanghai Colleges and Universities for Electric Power Corrosion Control and Applied Electrochemistry, Shanghai College of Electric Power, Shanghai 200090;
3.
c Department of Chemistry, Tongji University, Shanghai;
4.
d College of Environmental Science and Engineering, Tongji University, Shanghai

Corresponding author: LIAO Qiang-Qiang,
Received Date: 9 October 2008
Available Online: 20 January 2009
Fund Project: 上海市重点学科(P1304)资助项目 (P1304)

Inhibition behavior of brass corrosion by sodium diethyldithiocarbamate(SDDTC) in 3%(mass fraction) NaCl solution was investigated by means of mass-loss method,electrochemical impedance spectro-scopy(EIS) and potentiodynamic polarization. The mass-loss results show that SDDTC had an inhibition efficiency of up to 95% in a 3% NaCl solution at a concentration of 120×10^-4%. The EIS results indicate that the R_p value of brass electrodes initially increased with the increase of SDDTC concentration and immersion time,reaching a maximum at 120×10^-4% and 72 h. After that,the R_p value decreased slightly with further increase of SDDTC concentration and immersion time. Potentiodynamic polarization results reveal that the inhibitor had simultaneous inhibitory effects on both anodic and cathodic behavior of brass in a 3% NaCl solution.
- brass sodium diethyldithiocarbamate(SDDTC),
- mass-loss,
- electrochemical impedance spectro-scopy(EIS),
- polarization curves,
- inhibition efficiency,
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