| SUN Yan-an,LI Chun-fu,ZHANG Jia-lin,ZHANG Lei,ZHANG Feng-chun,XU Ping.Investigation on the Protective Mechanism of Ni-Fe-P Electroless Plating Against CO2 Corrosion[J],43(6):1-5 |
| Investigation on the Protective Mechanism of Ni-Fe-P Electroless Plating Against CO2 Corrosion |
| Received:August 08, 2014 Revised:December 10, 2014 |
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| DOI： |
| KeyWord:electroless plating Ni-Fe-P coating CO2 corrosion resistance |
| Author | Institution |
| SUN Yan-an |
1. School of Materials Science and Engineering, Southwest Petroleum University, Chengdu , China;2. Oil Production Technology Research Institute, Daqing Oilfield Company Ltd, Daqing , China; |
| LI Chun-fu |
School of Materials Science and Engineering, Southwest Petroleum University, Chengdu , China |
| ZHANG Jia-lin |
School of Materials Science and Engineering, Southwest Petroleum University, Chengdu , China |
| ZHANG Lei |
School of Materials Science and Engineering, Southwest Petroleum University, Chengdu , China |
| ZHANG Feng-chun |
School of Materials Science and Engineering, Southwest Petroleum University, Chengdu , China |
| XU Ping |
No. 3 Oil Production Company, Daqing Oilfield Company Ltd, Daqing , China |
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| Abstract: |
| Objective To investigate the mechanism of CO2 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. |
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