| The corrosion rate of hydrogen evolution, open circuit potential, galvanostatic polarizations electrode potential of Al-Me (Me: Mg, Zn, Bi, Sn, Pb, In, Ga) binary alloy in 25 ℃ 4 mol/L NaOH alkaline medium was studied respectively.The results showed that the hydrogen evolution rate of aluminium alloy slight increment when the Zn, In elements is putted in the pure Al, when Bi, Ga elements is added to the pure Al, the hydrogen evolution rate of aluminium alloy has no influence ，but the corrosion potential of aluminium alloy shifte positively .In contrast, the hydrogen evolution rate of aluminium alloy reduce to some extent, the corrosion potential shifte negatively when other elements(Mg，Sn，Pb)is added to the pure Al .Besides,the electrode potential of Al-Me binary alloy shift negatively slightly when Mg，Zn，Bi，In is putted in pure Al.the electrode potential of Al-Me binary alloy shift positively substantially when Sn，Pb，Ga is added to pure Al. |
