EFFECT OF ROLLING TEMPERATURE ON MICROSTRUCTURE AND PERFORMANCES OF Al-Mg-Sn-Bi-Ga-In ALLOY ANODE

J Chin Soc Corr Pro

2010, Vol. 30

Issue (4): 295-299 DOI:

Research Articles

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EFFECT OF ROLLING TEMPERATURE ON MICROSTRUCTURE AND PERFORMANCES OF Al-Mg-Sn-Bi-Ga-In ALLOY ANODE

LIANG Shuquan, ZHANG Yong, GUAN Dikai, TAN Xiaoping, TANG Yan, MAO Zhiwei

School of Materials Science and Engineering,Central South University, Changsha 410083

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Abstract

Modern testing techniques such as TEM, SEM, EDAX, Tafel curves, E-T curves and hydrogen collection test have been applied to analyze the effect of rolling temperature on the microstructure, electrochemical and anti-corrosion properties of Al-Mg-Sn-Bi-Ga-In alloy anode in alkaline solution （80℃, Na₂SnO₃+5 mol/L NaOH）. The results show that when controlling the pass deformation at 40\%, with the increase of rolling temperature, the microstructure of Al alloy anode undergoes a process from disordered dislocations cell structure, subgrain structure to dynamic recrystallized structure. When the rolling temperature is 420℃, the Al alloy anode has the most negative electrode potential of about -1.48 V（vs•Hg/HgO） and the lowest hydrogen evolution rate of 0.1716 mL•cm^-2•min^-1 due to the uniform distribution of active elements and decrease of segregation phases in alloy. The optimum comprehensive performance of Al alloy anode has been obtained.

Key words: rolling temperature Al alloy anode microstructure electrochemical property anti-corrosion property

Received: 23 February 2009

ZTFLH:

TM911.41

Corresponding Authors: zhiwei M AO E-mail: cw04zhangyong@126.com

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LIANG Shuquan, ZHANG Yong, GUAN Dikai, TAN Xiaoping, TANG Yan, MAO Zhiwei. EFFECT OF ROLLING TEMPERATURE ON MICROSTRUCTURE AND PERFORMANCES OF Al-Mg-Sn-Bi-Ga-In ALLOY ANODE. J Chin Soc Corr Pro, 2010, 30(4): 295-299.

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2010/V30/I4/295

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