FACTORS EFFECTING ON THE HYDROGEN EVOLUTION  ON Al-ANODES IN STRONG ALKALINE SOLUTION

J Chin Soc Corr Pro

2006, Vol. 26

Issue (4): 237-240 DOI:

Research Report

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FACTORS EFFECTING ON THE HYDROGEN EVOLUTION ON Al-ANODES IN STRONG ALKALINE SOLUTION

Yusu Song;Yan Zhang;Liqing Zhou

武汉海军工程大学兵器工程系

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Abstract By means of the constant current gathering volumes of hydrogen evolution,potentiodynamic and the surface corrosion morphology observed,the effect factors of the hydrogen evolution on Al anodes in strong alkaline solution were studied.The factors includes the alloying elements,the concentration of KOH solution,the temperature and the anti-hydrogen evolution agents.The aluminum alloy anode which contains mixed rare earth elements(RE) had the lower se lf-corrosion property and the hydrogen evolution rate in its surface also decreased greatly.When the concentration of KOH solution was 4 mol/L,the anode had the better activity and the lowest H2-evolution rate,The higher the temperature,the faster the H2-evolution rate.The anti-hydrogen evolution agents (eg.aminophenol) could reduce the H2-evolution rate.The results showed that the mixed rare earth(RE) aluminum alloy,4 mol/L KOH solution and the 0.4 mol/L o-aminophenol additive were suitable conditions to reduce the hydrogen evolution rate on the surface of A l-anodes,especially at the high temperature.

Key words: hydrogen evolution Al anode the alkaline solution

Received: 21 January 2005

ZTFLH:

TG174.42

Corresponding Authors: Yusu Song E-mail: caosys@263.net

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Yusu Song; Yan Zhang; Liqing Zhou. FACTORS EFFECTING ON THE HYDROGEN EVOLUTION ON Al-ANODES IN STRONG ALKALINE SOLUTION. J Chin Soc Corr Pro, 2006, 26(4): 237-240 .

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2006/V26/I4/237

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