Effects of Propargyl Alcohol on Electrochemical Behaviors of AZ91 Magnesium Alloy Anode in 3.5% NaCl Solution

Abstract:

To improve corrosion rates and activation properties of AZ91 magnesium alloy anode, effects of additives (propargyl alcohol) on electrochemical behaviors of AZ91 magnesium alloy in 3.5% NaCl solution have been examined by studying corrosion rate, polarization, open circuit potential (E_ocp) and transfer resistance values (R_t) of electrochemical impedance spectroscopy(EIS). The results show that propargyl alcohol not only decreases corrosion rate of AZ91 magnesium alloy anode, corrosion-inhibition ratio is 64.6%, but also increases activation properties of AZ91 when 1.0 % propargyl alcohol added into 3.5% NaCl solution. The current density of AZ91 reaches 9.46 mA.cm^-2 at-1.35V. Its active potential (E_act ) is-1.527 V , and E_ocp is-1.556 V.

• Periodical: Advanced Materials Research (Volumes 750-752)
• Pages: 1137-1140
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.750-752.1137
• Online since: August 2013
• Authors: Zu Xiao Yu*, Shi Xiong Hao, Qing Shan Fu
• Keywords: Additives Propargyl Alcohol, AZ91 Magnesium Alloy Anode, Electrochemical Property, NaCl Solution

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