Investigation on Electrochemistry Behavior of Fe-Cr-Ni Alloy in Caustic Solution

Qi Lei Sun; Ze Rui Liu; Ji Liang Liu; Chong Fang; Qing Nan Zhang

doi:10.4028/www.scientific.net/AMR.941-944.1402

Paper Titles

Application of Origin in Material Corrosion Experiment
p.1386

Effect of New Corrosion Inhibitor on Electrochemical Behavior of Prestressed Steel Wire in Simulated Concrete Pore Solution
p.1390

Impact of Local Concrete Crack on the Prestressed Steel Stress Corrosion Cracking
p.1394

Industrial Application of Pb–Ag–Ca Anode with Surface Passivation for Zinc Electrowinning
p.1398

Investigation on Electrochemistry Behavior of Fe-Cr-Ni Alloy in Caustic Solution
p.1402

Research on the Nitriding Effect of Ta-10W with Change of Process Parameters
p.1406

The Micro-Fabrication of Multidimensional Structure of Silicon by Selection Corrosion
p.1410

Process Design of Strengthening and Toughening Treatment for 65Mn Steel by Powder RE-Boronizing Method under Low Temperature
p.1414

Analysis on Fracture Mechanism of T92 Steel under High Temperature Multiaxial Creep
p.1423

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 941-944Investigation on Electrochemistry Behavior of...

Investigation on Electrochemistry Behavior of Fe-Cr-Ni Alloy in Caustic Solution

Abstract:

Electrochemistry experiments such as polarization curve and alternating-current impedance are adopted to study the electrochemistry behavior of Fe-Cr-Ni alloy (Inconel 690 alloy) in the caustic solution of 50% NaOH +0.3%SiO₂+0.3%Na₂S₂O_3.The results show that Inconel 690 alloy appears two anodic passivation areas, the passivation of the alloy elements Cr and Ni mainly contributes to the lower potential passivation area and the higher potential passivation area is mainly attributed to the passivation effect of the alloy elements Fe and Ni, especially the later. When Na₂S₂O is added into the high-temperature caustic solution, it can accelerate the anodic dissolution of Inconel690 alloy, retard or impede its passivation and decrease the stability of the surface passivation film, which is mainly attributed to the effect of Na₂S₂O₃on the anodic polarization behavior of Ni.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Advanced Materials Research (Volumes 941-944)

Pages:

1402-1405

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.941-944.1402

Citation:

Cite this paper

Online since:

June 2014

Authors:

Qi Lei Sun, Ze Rui Liu, Ji Liang Liu, Chong Fang, Qing Nan Zhang

Keywords:

Caustic Solution, Electrochemistry, Fe-Cr-Ni Alloy (Inconel 690 Alloy)

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] Tadao Ishihara, Ding Yaping. Corrosion damages and the relevant protective strategies for LWR nuclear power station. Journal of Nuelear Seienee and Engineering, 1991, 11(3): 226-237.

Google Scholar

[2] Ding Xunshen. Corrosion and protection of nuclear power plant steam generator tubes. CORROSION &PROTECTION, Vol. 21(2000), pp.15-20.

Google Scholar

[3] M. Casales, V.M. Salinas-Bravo, J.G. Gonzalez-Rodriguez. Effect of heat treatment on the stress corrosion cracking of alloy 690. Materials Science and Engineering A332 (2002), pp.223-230.

DOI: 10.1016/s0921-5093(01)01747-6

Google Scholar

[4] Hickling J , Wieling N. Electrochemical aspects of the stress corrosion cracking of Fe - Cr - Ni alloys in caustic solutions [J ] . Corrosion Science , 1978 , 20 : 269.

DOI: 10.1016/0010-938x(80)90135-3

Google Scholar

[5] Horowitz H H. Corrosion 85 Boston: NACE. 1985, paper 61.

Google Scholar

[6] Rajah V B was G S Sorrosion，19871 43：305.

Google Scholar

[7] Y.Y. Chen, L.B. Chou, H.C. Shih. Factors affecting the electrochemical behavior and stress corrosion cracking of Alloy 690 in chloride environments. Materials Chemistry and Physics, Vol. 97 (2006), p.37–49.

DOI: 10.1016/j.matchemphys.2005.07.053

Google Scholar