摘要
探索了新的不含有害物质的铝合金阳极氧化膜绿色封闭技术;新方法使用了铈盐化学处理和钼盐溶液电化学处理相结合的工艺。对比了不同封闭方法对L3铝合金阳极氧化膜在NaCl溶液中耐蚀性的影响,包括氟化镍封闭,重铬酸钾封闭和铈-钼盐封闭。利用动电位极化法研究了封闭后阳极氧化膜的腐蚀行为。利用扫描电子显微镜(SEM)观察了封闭后阳极氧化膜的表面形貌和成分。结果表明铈-钼盐封闭工艺可以为铝合金阳极氧化膜在NaCl溶液中提供较高的耐蚀性。
A green sealing method of anodic films on aluminum alloy L3 was studied to eliminate the toxic materials. The new process uses chemical treatments in cerium solution and an electrochemical treatment in a molybdate solution. Potentiodynamic polarization was used to study the influences of sealing methods On the corrosion behavior of anodic films in NaCl solutions. The Ce-Mo sealing made the surface structure and morphology of anodic films uniform and compact. Ce and Mo produced a Cooperative effect to improve the corrosion resistance of anodic films. Anodic films sealed by Ce-Mo provided high corrosion resistance in NaCl solutions.
出处
《腐蚀与防护》
CAS
北大核心
2007年第8期414-416,共3页
Corrosion & Protection
基金
国家自然科学基金资助项目(10472049)
关键词
L3铝合金
阳极氧化
封闭
Aluminum alloy L3
Anodic film
Sealing
