| 压铸镁合金AZ91D在碱性NaCl溶液中的腐蚀行为 |
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| 引用本文： | 马全友,王振家,王璐科,李培杰.压铸镁合金AZ91D在碱性NaCl溶液中的腐蚀行为[J].腐蚀科学与防护技术,2005,17(5):328-330. |
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| 作者姓名： | 马全友 王振家 王璐科 李培杰 |
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| 作者单位： | 清华大学,机械工程系,北京,100084 |
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| 摘 要： | 采用电化学方法研究了压铸镁合金AZ91D在碱性NaCl溶液中的腐蚀行为，并用扫描电镜观察了腐蚀形貌，对腐蚀产物进行了能谱分析.结果表明：在强碱性pH=12的环境下，当Cl-的浓度低于0.1 mol/L时，合金表面可以形成较稳定的钝化膜；随着Cl-浓度的增加，点蚀电位逐渐降低；富Al相的耐蚀性高于基体相，在碱性环境中，腐蚀产物主要为Mg(OH)2和MgO.
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| 关 键 词： | AZ91D 碱性 腐蚀 |
| 文章编号： | 1002-6495（2005）05-0328-03 |
| 收稿时间： | 2004-03-04 |
| 修稿时间： | 2004-04-29 |
CORROSION BEHAVIOR OF AZ91D MAGNESIUM ALLOY IN ALKALINE SOLUTION OF NaCl |
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| MA Quan-you,WANG Zhen-jia,WANG Lu-ke,LI Pei-jie.CORROSION BEHAVIOR OF AZ91D MAGNESIUM ALLOY IN ALKALINE SOLUTION OF NaCl[J].Corrosion Science and Protection Technology,2005,17(5):328-330. |
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| Authors: | MA Quan-you WANG Zhen-jia WANG Lu-ke LI Pei-jie |
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| Abstract: | The corrosion behavior of AZ91D magnesium alloy in alkaline solution of NaCl was investigated by means of electrochemical means,and the corroded surface was examined by using SEM and EDX.The result showed that a stable passive film was formed on the alloy surface under the condition of pH=12 and concentration of Cl~- less than 0.1 mol/l;the pitting corrosion potential gradually decreased with the increase of Cl~- concentration; corrosion resistance of aluminumsaturated phase was better than the phase of matrix;the corrosion products were Mg(OH)_2 and MgO in alkaline solution of NaCl. |
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| Keywords: | AZ91D NaCl |
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