Ni-Fe-P化学镀层抗CO_2腐蚀性机理研究  

Investigation on the Protective Mechanism of Ni-Fe-P Electroless Plating Against CO_2 Corrosion

作　　者：孙延安[1,2] 李春福[1] 张家林[1] 张雷[1] 张凤春[1] 许萍[3] 

机构地区：[1]西南石油大学材料科学与工程学院,成都610500 [2]大庆油田有限责任公司采油工程研究院,黑龙江大庆163453 [3]大庆油田有限责任公司第三采油厂,黑龙江大庆163453

出　　处：《表面技术》2014年第6期1-5,共5页Surface Technology

基　　金：国家高技术研究发展计划(863计划;2006AA06A105)~~

摘　　要：目的研究Ni-Fe-P化学镀层抗CO2腐蚀性机理。方法通过SEM,EDS,XRD以及EIS等技术对经化学镀Ni-Fe-P处理后的35Cr Mo钢表面进行表征,分析其抗CO2的腐蚀性能。结果处理后的35Cr Mo钢表面为非晶态组织,硬度高达570.12HV。Ni-Fe-P镀层钢腐蚀倾向减小,极化电阻增大,镀层对基体形成了较好保护。镀层的腐蚀过程受溶液双电层和钝化膜的影响。结论 Ni-Fe-P镀层在CO2水溶液中具有极强的钝化倾向,可显著提高材料的抗CO2腐蚀性能。Objective To investigate the mechanism of COL corrosion resistance of Ni-Fe-P coating. Methods By means of SEM,EDS,XRD and EIS, CO2 corrosion resistance behavior at the surface of 35CrMo with Ni-Fe-P coating was characterized and analyzed. Results The results showed that after Ni-Fe-P coating, the surface of 35CrMo was turned into amorphous microstructure and its hardness reached up to 570.12HV. The polarization resistance increased and the corrosion tendency decreased, which provided good protection for the matrix. During the corrosion process, the corrosion behavior of the coating was affected by electric double layer capacitance and passivated film. Conclusion The Ni-Fe-P coating could significantly improve the resistance to CO2 due to its great passivation tendency in CO2 solution.

关 键 词：化学镀 Ni-Fe-P镀层 抗CO2腐蚀 

分 类 号：TQ153.2[化学工程—电化学工业]