| 纯铝微弧氧化陶瓷膜组织及耐腐蚀性能 |
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| 引用本文： | 王志平,孙宇博,丁坤英,刘佳,蔡珣.纯铝微弧氧化陶瓷膜组织及耐腐蚀性能[J].焊接学报,2008,29(12):74-76. |
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| 作者姓名： | 王志平 孙宇博 丁坤英 刘佳 蔡珣 |
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| 作者单位： | 1. 中国民航大学,理学院,天津,300300
2. 上海交通大学,材料学院,上海200030 |
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| 摘 要： | 利用微弧氧化技术,在碱性硅酸盐电解液中对纯铝进行表面改性处理,制备均匀致密的陶瓷膜。利用扫描电子显微镜(SEM)观察氧化陶瓷膜表面形貌及横截面组织结构,利用纳米压入硬度测试仪测量陶瓷膜的显微硬度和杨氏模量的分布,运用电化学方法测量陶瓷膜的耐腐蚀性能。结果表明,铝合金微弧氧化陶瓷膜的表面硬度高达25.3GPa,纳米硬度和杨氏模量在陶瓷膜的横截面分布相似,从膜基结合处向膜层表面呈下降趋势。从极化曲线中的腐蚀电势和腐蚀电流来看,微弧氧化处理后,纯铝的抗腐蚀能力得到很大的提高。
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| 关 键 词： | 铝 微弧氧化 陶瓷膜 耐腐蚀 |
| 收稿时间： | 2008/10/20 0:00:00 |
Structure and electrochemistry corrosion behaviors of microarc oxidation on aluminum |
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| WANG Zhiping,SUN Yubo,DING Kunying,LIU Jia and CAI Xun.Structure and electrochemistry corrosion behaviors of microarc oxidation on aluminum[J].Transactions of The China Welding Institution,2008,29(12):74-76. |
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| Authors: | WANG Zhiping SUN Yubo DING Kunying LIU Jia and CAI Xun |
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| Affiliation: | College of Sciences, Civil Aviation University of China, Tianjin 300300, China,College of Sciences, Civil Aviation University of China, Tianjin 300300, China,College of Sciences, Civil Aviation University of China, Tianjin 300300, China,College of Sciences, Civil Aviation University of China, Tianjin 300300, China and School of Materials Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, China |
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| Abstract: | The thick, dense and ultra-hard ceramic coating was obtained on the aluminum surface in a silicate electrolyte by microarc oxidation. The surface morphology and cross section of ceramic coating were observed by SEM, the hardness and Young s modulus of ceramic coating were estimated by nano-hardness tester, and the electrochemistry corrosion behaviors of ceramic coating were evaluated using polarization curves. The results show that the highest surface hardness of ceramic surface coating is 25.3 GPa; the hardness and Young's modulus of cross section of coating distribute similarly, both of them decrease from interface to surface of the coating; from the results of electrochemistry, microarc oxidation is effective method to form an anti-corrosion protective film on aluminum. |
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| Keywords: | aluminum microarc oxidation ceramic coating electrochemistry corrosion behaviors |
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