摘要
通过正交实验在AZ91镁合金表面制备出了深色陶瓷膜,并进一步研究了陶瓷膜的耐蚀性.利用XES对陶瓷膜成分进行分析,探讨陶瓷膜层显色的原因.结果表明,浓度比为55∶30∶4∶20的N1-N2-C-N3溶液中,采用恒压方式电压在350 V^450 V或恒流方式电流密度在1.2 A/dm2~2.4 A/dm2时,可制备出获理想的棕黄色、棕色、棕黑色陶瓷膜;棕色(400 V)和棕黄色(0.8 A/dm2)陶瓷膜腐蚀曲线相对较为平缓,耐蚀性最佳.
Fuscous ceramic films on magnesium-alloy were made by MAO process and their corrosion perfermance was studied. Meanwhile X-ray Energy Spectrometer（XES） was used to examine and analyse the composition of the fuscous ceramic films. The results showed that it could be obtained ceramic films with colors of brown-yellow or brown and brown-black respectively in an electrolyte of N1 -N2-C-N3 （ concentra- tion ratio is 55： 30： 4： 20） ,within a voltage range 350 V -400 V by corstant voltage model or a current density range 1.2 A/dm^2 -2. 4 A/dm^2 by constant current model. Among these films prepared ceramic film of brown（400 V） or brown-yellow（0. 8 A/dm^2 ）has the mose excellent corrosion resistance.
出处
《腐蚀科学与防护技术》
CAS
CSCD
北大核心
2007年第1期51-53,共3页
Corrosion Science and Protection Technology
基金
国家"十.五"科技攻关计划(2001BA311A06-3)
"863"计划(2002AA331120)
关键词
镁合金
微弧氧化
深色陶瓷膜
耐蚀性
magnesium- alloy
micro arc oxidation（MAO）
fuscous ceramic film
corrosion resistance
