| 镁合金表面新型高耐蚀性植酸化学转化膜的制备 |
| |
| 引用本文： | 曾纪勇,郭兴伍,郭嘉成,聂乐文,弓磊超,彭立明,丁文江.镁合金表面新型高耐蚀性植酸化学转化膜的制备[J].表面技术,2019,48(10):230-237. |
| |
| 作者姓名： | 曾纪勇 郭兴伍 郭嘉成 聂乐文 弓磊超 彭立明 丁文江 |
| |
| 作者单位： | 上海交通大学 材料科学与工程学院 轻合金精密成型国家工程研究中心和金属基复合材料 国家重点实验室,上海,200240;上海交通大学 材料科学与工程学院 轻合金精密成型国家工程研究中心和金属基复合材料 国家重点实验室,上海 200240;上海材料创新研究院,上海 200240 |
| |
| 基金项目： | 国家重点研发计划（2016YFB0301005）；高等学校学科创新引智计划（B16032） |
| |
| 摘 要： | 目的 提高镁合金的耐蚀性能。方法 通过在单一植酸转化膜基础上，利用植酸的强络合作用，在反应溶液中引入金属离子，获得新型高耐蚀性植酸转化膜层。通过正交实验、SEM、EDS和电化学方法，对新型植酸转化膜层的工艺配方、微观形貌、元素组成和耐蚀性进行分析。结果 正交试验研究得到了新型植酸转化膜层的最佳工艺参数为：25 g/L Mn(H2PO4)2+10 g/L植酸，反应温度95 ℃，反应时间10 min。在此工艺下，得到的膜层均匀，和未添加Mn离子的膜层相比，裂纹明显减小。EDS结果表明，膜层的主要元素为Mg、P、O、Mn、C，转化膜的成分可能是锰、镁与植酸形成的络合物。动电位极化曲线的实验结果表明，新型植酸转化膜可以极大地降低镁合金的腐蚀电流密度（Jcorr=0.337 ），对镁合金的保护效率为96.37%。结论 通过在植酸转化膜中添加Mn元素，不仅可以减小植酸膜层的裂纹宽度，还可以极大地提高镁合金的耐蚀性。
|
| 关 键 词： | 镁合金 植酸 化学转化膜 正交试验 耐腐蚀性能 |
| 收稿时间： | 2019/5/7 0:00:00 |
| 修稿时间： | 2019/10/20 0:00:00 |
Preparation of New Phytic Acid Chemical Conversion Coating with Excellent Corrosion Resistance on Magnesium Alloys |
| |
| ZENG Ji-yong,GUO Xing-wu,GUO Jia-cheng,NIE Le-wen,GONG Lei-chao,PENG Li-ming and DING Wen-jiang.Preparation of New Phytic Acid Chemical Conversion Coating with Excellent Corrosion Resistance on Magnesium Alloys[J].Surface Technology,2019,48(10):230-237. |
| |
| Authors: | ZENG Ji-yong GUO Xing-wu GUO Jia-cheng NIE Le-wen GONG Lei-chao PENG Li-ming and DING Wen-jiang |
| |
| Affiliation: | 1.National Engineering Research Center of Light Alloy Net Forming and Key State Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China,1.National Engineering Research Center of Light Alloy Net Forming and Key State Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; 2.Shanghai Innovation Institute for Materials, Shanghai 200240, China,1.National Engineering Research Center of Light Alloy Net Forming and Key State Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China,1.National Engineering Research Center of Light Alloy Net Forming and Key State Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China,1.National Engineering Research Center of Light Alloy Net Forming and Key State Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China,1.National Engineering Research Center of Light Alloy Net Forming and Key State Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; 2.Shanghai Innovation Institute for Materials, Shanghai 200240, China and 1.National Engineering Research Center of Light Alloy Net Forming and Key State Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; 2.Shanghai Innovation Institute for Materials, Shanghai 200240, China |
| |
| Abstract: | |
| |
| Keywords: | magnesium alloy phytic acid chemical conversion coating orthogonal experiment corrosion resistance |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《表面技术》浏览原始摘要信息 |
|
点击此处可从《表面技术》下载全文 |
|
