Cr-Fe-ZrO_2复合镀层的结构与耐腐蚀性研究  

Structure and Corrosion Behavior of Electrodeposited Cr-Fe-ZrO_2 Composite Coatings

作　　者：李大光[1] 黄林源[1] 何湘柱[1] 傅维勤[1] 周新莉[1] 

机构地区：[1]广东工业大学,广州510006

出　　处：《表面技术》2010年第3期13-15,51,共4页Surface Technology

基　　金：国家自然科学基金资助项目(50004003);广州市科技攻关项目(2008J1-C041)

摘　　要：采用复合电沉积工艺制备了Cr-Fe-ZrO2复合镀层。分别用SEM,EDS,XRD和Tafel曲线较系统地研究了Cr-Fe-ZrO2复合镀层的表面形貌、成分、结构和耐蚀性。结果表明:复合镀层的组成(质量分数)为O9.35%,Cr 49.98%,Fe 31.51%,Zr 6.66%时,在ZrO2纳米粒子的弥散强化作用下,Cr-Fe合金镀层的裂纹状况得到明显改善,而且复合镀层成分分布均匀,组织致密,结构呈非晶态特征。在室温下,Cr-Fe-ZrO2复合镀层在0.5 mol/L H2SO4溶液中的耐蚀性较Cr-Fe合金镀层明显提高。New Cr-Fe-ZrO2 composite coating was prepared by composite electrodeposition technology.The morphology,composition,structure and corrosion resistance of the coatings were systematically characterized by means of SEM,EDS,X-ray diffraction and Tafel methods.The results show that when the mass composition of the obtained Cr-Fe-ZrO2 composite coating is O 9.35 %,Cr 49.98 %,Fe 31.51 %,and Zr 6.66 %,the crack condition of Cr-Fe alloy coating is improved markedly by the dispersion strengthening effect of the ZrO2 particle.Meanwhile,the composite coatings present amorphous characteristics.In comparison with Cr-Fe alloy coatings,the corrosion resistance of Cr-Fe-ZrO2 composite coating is enhanced evidently in 0.5 mol/L H2SO4 solutions at room temperature.

关 键 词：电沉积 Cr-Fe-ZrO2 复合镀层 结构 耐蚀性 

分 类 号：TQ153.2[化学工程—电化学工业]