【作者】 杨潇薇； 王桂香； 董国君； 龚凡；

【Author】 Yang Xiaowei,Wang Guixiang,Dong Guojun,Gong Fan (Harbin Engineering University,College of Materials Science and Chemical Engineering,Key laboratory of superlight material and surface technology,Harbin,150001)

【机构】 哈尔滨工程大学材料科学与化学工程学院超轻材料与表面工程教育部重点实验室；

【摘要】 利用无铬阳极氧化技术在镁锂合金表面生成了阳极氧化膜,通过扫描电镜、X射线衍射、极化曲线和电化学阻抗谱测试技术对氧化膜进行了表面形貌、晶相组成和耐蚀性能的研究。讨论了基本电解液里不同的植酸加入量对氧化膜性能的影响。研究结果表明,基本电解液里添加植酸后获得的氧化膜表面形貌没有得到很大改善,仍然存在孔洞;当植酸加入量为10.0g/L时,可得到表面光滑亮白,耐蚀性最好的阳极氧化膜。更多还原

【Abstract】 An anodizing technology for Mg-8.5Li alloys,based on chrome-free electrolyte has been studied to develop anodic film.The morphology and crystal composition of the films were examined by scanning electron microscopy(SEM) and X -ray diffraction(XRD).The corrosion resistance of the films was researched by polarization curves and electrochemical impedance spectroscopy(EIS).The effect of additive amount of phytic acid in the basic electrolyte on the property of anodic films was also researched.The results showed that the morphology of the films had no obvious difference after the addition of phytic acid in the basic electrolyte;when the additive amount of phytic acid was 10.0g/L,the white anodic film was the most corrosion resistant.更多还原