TITLE:
Inhibition Effects of Pyrazine and Piperazine on the Corrosion of Mg-10Gd-3Y-0.5Zr Alloy in an Ethylene Glycol Solution
AUTHORS:
Daobing Huang, Yuanqiang Tu, Guangling Song, Xingpeng Guo
KEYWORDS:
GW103; Coolant; Inhibitor; Corrosion
JOURNAL NAME:
American Journal of Analytical Chemistry,
Vol.4 No.6A,
June
21,
2013
ABSTRACT:
The corrosion and inhibition effect of magnesium-based
rare-earth containing alloy Mg-10Gd-3Y-0.5Zr (GW103) was studied in an ethylene
glycol (EG) solution mixed with organic inhibitors. The inhibition efficiencies
of piperazine and pyrazine inhibitors on the corrosion of GW103 were compared
by means of potentiodynamic polarization curve, electrochemical
impedance spectroscopy (EIS) and weight loss measurements. It was found that
the corrosion process of GW103 alloy in EG solution was hindered by these two
inhibitors and the inhibition of pyrazine was more effective than that of
piperazine. It was implied that pyrazine could be an effective inhibitor for
GW103 in an ethylene glycol coolant solution.