Corrosion and optimum corrosion protection potential of friction stir welded 5083-O Al alloy for leisure ship

被引：10

作者：

Park, Sung-Hyeon ^{[2
]}

Kim, Jong-Shin ^{[1
]}

Han, Min-Su ^{[3
]}

Kim, Seong-Jong ^{[3
]}

机构：

[1] Korea Register Shipping, Taejon 305343, South Korea

[2] Mokpo Maritime Univ, Div Maritime Transportat Syst, Mokpo 530729, Jeonnam, South Korea

[3] Mokpo Maritime Univ, Div Marine Engn, Mokpo 530729, Jeonnam, South Korea

来源：

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2009年 / 19卷 / 04期

关键词：

5083-O Al alloy; electrochemical test; polarization; hydrogen embrittlement; optimum protection potential; HYDROGEN EMBRITTLEMENT PROPERTIES; ELECTROCHEMICAL PROPERTIES; SEAWATER; STEEL; HAZ;

D O I：

10.1016/S1003-6326(08)60373-8

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Electrochemical tests were undertaken to determine the optimum conditions in seawater for corrosion protection of friction stir-welded 5083-O Al alloy. Polarization trend observations show that the limiting potential that avoids the effects of hydrogen embrittlement is -1.6 V, corresponding to the crossover point between concentration polarization and activation polarization. However, the optimum protection potential is between -1.5 and -0.7 V since the current density at these values is low in the potentiostatic tests. When a galvanic cell is formed in the seawater, the welds exhibit electrochemically stable trends. Welded parts in galvanic tests with various area ratios are stable and have excellent anticorrosion characteristics.

引用

页码：898 / 903

页数：6

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