锆基非晶合金与传统合金在海水中的耐腐蚀性能对比研究  

Comparison of Corrosion Resistance of Zr-based Amorphous Alloys and Traditional Alloys in Seawater

作　　者：马晓伟 薛荣洁 王涛涛 杨亮 刘珍光 MA Xiaowei;XUE Rongjie;WANG Taotao;YANG Liang;LIU Zhenguang(School of Materials Engineering,Jiangsu University of Technology,Changzhou 213001,China;School of Materials Science and Engineering,Jiangsu University of Science and Technology,Zhenjiang 212100,China)

机构地区：[1]江苏理工学院材料工程学院,常州213001 [2]江苏科技大学材料科学与工程学院,镇江212100

出　　处：《中国腐蚀与防护学报》2024年第4期949-956,共8页Journal of Chinese Society For Corrosion and Protection

基　　金：国家自然科学基金(51801083)。

摘　　要：采用X射线衍射仪(XRD)和差示量热扫描分析仪(DSC)对锆基非晶合金进行结构和热力学性能表征;采用动电位极化曲线及电化学阻抗谱研究锆基非晶合金和传统金属合金(304不锈钢、6082铝合金)在3.5%NaCl溶液和模拟海水溶液中的电化学行为;采用扫描电镜(SEM)观察腐蚀后试样的表面形貌,并利用能谱仪(EDS)分析非晶合金腐蚀后表面元素的变化。结果表明:4种金属合金在腐蚀溶液中均发生点蚀现象,非晶合金表现出更加优异的耐腐蚀性能。相较于在3.5%NaCl溶液中的极化曲线,非晶合金和传统合金在模拟海水溶液中的极化曲线均发生负移,归因于海水中溶有大量的氯化物和硫酸盐。相较于传统合金,非晶合金表面形成的钝化膜表现的更加稳定。The structure and thermal property of Zr-based amorphous alloys Zr41.2Ti13.8Cu12.5Ni10Be22.5(Vit1)and Zr55Cu30Al10Ni5(Zr55)were determined by X-ray diffraction(XRD)and differential scanning calorimetry(DSC).The electrochemical behavior of two Zr-based amorphous alloys and two traditional metal alloys(304 stainless steel and 6082 Al-alloy)in 3.5%NaCl and simulated seawater solution were comparatively assessed via electrochemical workstation,scanning electron microscope(SEM)and energy dispersive spectroscope(EDS).The results show that the four metallic alloys present pitting corrosion,but the amorphous alloys show higher corrosion resistance.Tacking the polarization curves aquired in 3.5%NaCl solution as comparison,it follows that the polarization curves of amorphous alloys and conventional alloys in the simulated seawater showed negative shift,which was attributed to the large amount of sulfate and chloride dissolved in the simulated seawater.Compared to the traditional metallic alloys,the passive film formed on the surface of amorphous alloys is more stable.

关 键 词：非晶合金 电化学 模拟海水 耐腐蚀性 

分 类 号：TG172.5[金属学及工艺—金属表面处理]