高焕方,赵春雪,罗天元,李聪.AZ31B镁合金磷化工艺研究[J].表面技术,2008,37(4):37-38,56.
GAO Huan-fang,ZHAO Chun-xue,LUO Tian-yuan,LI Cong.Study on Phosphate Process for A231B Magnesium Alloy[J].Surface Technology,2008,37(4):37-38,56 |
| AZ31B镁合金磷化工艺研究 |
| Study on Phosphate Process for A231B Magnesium Alloy |
| 投稿时间：2008-05-19 修订日期：2008-08-10 |
| DOI： |
| 中文关键词: 磷化 镁合金 防腐 极化曲线 环氧涂层 |
| 英文关键词:Phosphating Magnesium alloy Anticorrosion Polarization carre Epoxy coating |
| 基金项目:重庆市教育委员会科学技术研究资助项目( KJ070601) |
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| Author | Institution |
| GAO Huan-fang | 1. School of Chemistry and Biological Engineering, Chongqing Institute of Technology, Chongqing 400050, China;2. Materials Science and Engineering College, Chongqing University, Chongqing 400030, China |
| ZHAO Chun-xue | School of Chemistry and Biological Engineering, Chongqing Institute of Technology, Chongqing 400050, China |
| LUO Tian-yuan | The Natural Environmental Test and Research Center of COSTIND, Chongqing 400039, China |
| LI Cong | School of Chemistry and Biological Engineering, Chongqing Institute of Technology, Chongqing 400050, China |
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| 中文摘要: |
| 应用Tafel极化曲线分析方法，对在不同磷化时间及不同磷化温度条件下磷化的AZ31B镁合金的防腐性能进行了研究，此外还研究了磷化膜的存在对AZ31B镁合金表面环氧涂层防腐性能的影响。研究结果表明：磷化时间及磷化温度对AZ31B镁合金磷化膜的防腐性能有较大影响，其最佳磷化时间为5min，最佳磷化温度为50℃。在最佳条件下，磷化膜的腐蚀电流密度最小，腐蚀电位明显正移，且极化电阻最大。此外，磷化膜的存在使环氧涂层在AZ31B镁合金表面的腐蚀电流密度下降了3个数量级，腐蚀电位正向移动了588mV，即磷化膜可提高环氧涂层在AZ31B镁合金表面的防腐性能。 |
| 英文摘要: |
| The anticorrosive performance of bare AZ31B magnesium alloy at different phosphating times and different phosphating temperature was studied by Tafel, and the effect of the exsited phosphating film on anticorrosion of epoxy coatings on the AZ31B was studied. Results indicate that the phosphating times and phosphating temperature are obvious influence on the anticorrosive performance of AZ31B magnesium alloy, the best phosphating times is 5min and the best phosphating temperature is 50℃ . The corrosion current density of the phosphate fiim is least, the corrosion potential shift positively, and the polarization resistance is most at the best conditions. The corrosion current density of the epoxy coating on AZ31B magnesium alloy declines three orders of magnitude, and the corrosion potentials shifte positively 588mV because of the phosphate film. In other words, the phosphate film can improve the anticorrosive performance of the epoxy coatings on AZ31B magnesium alloy. |
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