摘要
应用电化学阻抗谱和X射线衍射分析、电子探针面扫描技术研究了氮合金化对耐候钢在模拟工业大气溶液中耐腐蚀性能的影响。交流阻抗结果显示,加氮耐候钢在高频段（点蚀诱发期）比传统耐候钢有着更加优良的耐点蚀能力,低频段（扩散型阻抗生成期）则显示具有较致密的锈蚀产物层,抵御腐蚀介质侵蚀的能力较强。X射线衍射和电子探针分析结果表明耐候钢加氮促进了稳定结构锈层生成,锈层中非晶态α-（Fe1-xCrx）OOH的分布更广泛、连续,提升了耐候钢抵御Cl-离子侵入的能力。
By electrochemical impedance spectroscopy,X-ray diffraction analysis and the profile scanning with electron probe,the effect of nitrogen on the corrosion behaviour of weathering steel in the solution simulating industrial air was studied.The results of AC impedance testing indicated that the pitting-resistance property at the high frequency（the pitting-resistance inductive stages） was better for weathering steel adding nitrogen than for traditional weathering steel,at low frequency （the diffusion-type impedance generation stages） the capability of the resistance from corrosion was high because of more compact corrosion product layer.The results of X-ray diffraction analysis and the profile scanning with electron probe indicated that adding nitrogen to weathering steel could accelerate the generation of the rust layer,and make the amorphous-（Fe1-xCrx）OOH distribute more widely and continuous,improving the capability of weathering steel to resist the intrusion of cl-ion.
出处
《莱钢科技》
2010年第6期1-4,共4页
Laigang Science & Technology
关键词
耐候钢
氮合金化
电化学阻抗谱
锈层
weathering steel
nitrogen alloying
electrochemical impedance spectroscopy
rust layer
