| ECAP变形后超硬铝合金的电化学腐蚀行为 |
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| 引用本文： | 常德功,于宁宁,吕明利. ECAP变形后超硬铝合金的电化学腐蚀行为[J]. 腐蚀与防护, 2009, 0(12) |
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| 作者姓名： | 常德功 于宁宁 吕明利 |
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| 作者单位： | 青岛科技大学机电工程学院; |
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| 摘 要： | 采用电化学测量技术,研究了等径转角挤压方法(ECAP)变形后的AA7075-T651铝合金在NaCl溶液中的电化学腐蚀行为。结果表明:同道次ECAP状态下,随着Cl-浓度增加,AA7075-T651的自腐蚀电位和点蚀电位负移,耐腐蚀性能降低;而在同浓度NaCl溶液中,随着ECAP挤压道次增加,AA7075-T651的自腐蚀电位和点蚀电位正移,耐腐蚀性能提高。本次试验也表明了Cl-浓度对于该铝合金耐腐蚀性能的影响程度要远超过ECAP技术。
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| 关 键 词： | 电化学腐蚀 超硬铝合金 极化曲线 等径转角挤压方法(ECAP) |
Electrochemical Corrosion Behavior of Super-hard Aluminum Alloy Deformed by ECAP |
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| CHANG De-gong,YU Ning-ning,LU Ming-li. Electrochemical Corrosion Behavior of Super-hard Aluminum Alloy Deformed by ECAP[J]. Corrosion & Protection, 2009, 0(12) |
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| Authors: | CHANG De-gong YU Ning-ning LU Ming-li |
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| Affiliation: | CHANG De-gong,YU Ning-ning,LU Ming-li(Qingdao University of Science and Technology,Qingdao 266061,China) |
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| Abstract: | The electrochemical corrosion behavior of aluminum alloy AA7075-T651 deformed by equal-channel angular pressing(ECAP) in NaCl solutions was studied by using electrochemical techniques.The experimental results showed that self-corrosion potential and pitting potential of AA7075-T651 deformed by the same EACP moved in negative direction with increasing Cl-concentration,However,in the same NaCl solution,self-corrosion potential and pitting potential of AA7075-T651 deformed by different EACP moved in positive d... |
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| Keywords: | electrochemical corrosion super-hard aluminum alloy polarization curve ECAP |
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