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| Correlation of Corrosion Protection of Porous Membrane on Metal Surface with Electrolytes in Solution |
| Yafei Kuang; |
| 湖南大学化学化工学院 |
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Abstract The relationship between the electrolytic composition and the interfacial electic characteristics of the porous membrane of anodized aluminum was investigated. The pHIEP at isoelectric point of the porous membrane was equal to 9.20 in 1.0*10-2mol/L KCl solution. Pretreatment of the porous membrane was equal to 9.20 in 1.0*10-2mol/L KCl solution.Pretreatment of porous membrane with F-,PO43-,SiO32-, S2O32- and tannic acid shifted the pHIEP to 3.40,3.30,4.30,4.50 and 3.90, respectively. The change state and ionic selectivity of the membrane could be characterized by the place of its pHIEP relative to pHsol in solution. The membrane was positively changed and selectively pemeable to anions when pHsol
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Received: 26 March 1999
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Corresponding Authors:
Yafei Kuang
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[1 ]SatoN .Towardamorefundamentalunderstandingofcorrosionprocesses[J].Corrosion ,1 989,45 ( 5 ) :35 4～ 36 8
[2 ]旷亚非 ,王玲 ,胡飞 .铝阳极氧化膜的界面电性能研究 [J] 电化学 ,1 998,4( 2 ) :1 6 4～ 1 6 9.
[3]巴德AJ ,福克纳LR ,谷林瑛等译 .电化学方法 [M] 北京 :化学工业出版社 ,1 986 :5 78
[4 ]KalantaryMR ,GabeDR ,RossDH .Amodelforthemechanismofnickelfluoridecoldsealingofanodizedaluminum[J].JApplElectrochem ,1 992 ,2 2 :2 6 8～ 2 76 |
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