The Kelvin Probe Study on Initial Corrosion of Weathering Steel with NaCl Deposition

Chaofang Dong; Qian Liu; Kui Xiao; Long Jiao Xu; Xiao Gang Li

doi:10.4028/www.scientific.net/AMR.152-153.493

Paper Titles

Repellent Effects of the Insecticide Based on Porous Starch and Fennel Essential Oil against Tribolium confusum
p.476

Effect of Soft Foamed Polyethylene on the Property of Portable Mini-Cold Storage
p.480

Pb (II)-Imprinted Chitosan/TiO₂ Hybrid Film for High Selectivity of Adsorption Lead Ion in Aqueous Solution
p.484

Development of Nano-ZnO Coated Food Packaging Film and its Inhibitory Effect on Escherichia coli In Vitro and in Actual Tests
p.489

The Kelvin Probe Study on Initial Corrosion of Weathering Steel with NaCl Deposition
p.493

Preparation and Characterization of Si₃N₄/TiCN Composite Ceramic Tool Material
p.500

Thermal Stability of Cotton Cellulose Modified with Flame Retardants
p.504

Characteristics and Release Behavior of Sodium Alginate Microencapsulation Containing Cinnamon Oil
p.508

The Effect of Formulation Variables on the Encapsulation Efficiency and SO₂-Release Behavior of Microparticles Containing Sulphite
p.512

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 152-153The Kelvin Probe Study on Initial Corrosion of...

The Kelvin Probe Study on Initial Corrosion of Weathering Steel with NaCl Deposition

Abstract:

Scanning Kelvin Probe (SKP) combined with Scanning Electron Microscope (SEM) and Energy-Dispersive Spectrometer (EDS) analysis were used to study the corrosion behavior and electrochemical law of weathering steel Q450NQR1 deposited with NaCl particles at initial period of heat-damp test. The results showed that Q450NQR1 was severely attacked by Cl- for the reason that a low electric potential anode area was formed after a NaCl particle deliquesced rapidly. This anode area was corroded quickly, resulted in the appearance of rust spot, which led to a conductivity decline of the steel substrate and an increase of potential in the rust region. Moreover, tiny crack formed on the rust scale during the early stage and the galvanic couple between rust spot area possessing a high electric potential and metal substrate with a low electric potential were the two main reasons for the expansion of rust layer and the enhancement of corrosion.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Advanced Materials Research (Volumes 152-153)

Pages:

493-499

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.152-153.493

Citation:

Cite this paper

Online since:

October 2010

Authors:

Chaofang Dong, Qian Liu, Kui Xiao, Long Jiao Xu, Xiao Gang Li

Keywords:

Atmosphere Corrosion, NaCl, Scanning Kelvin Probe, Weathering Steel

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] Jibiao Zhang, Jia Wang and Yanhua Wang: Marine Sci., Vol. 29(2005), p.17[In Chinese].

Google Scholar

[2] M. Almeida, M. Morcillo and B. Rosales: Br. Corros. J. Vol. 35(2000), p.289.

Google Scholar

[3] W. Hou and C. Liang: Corros. Vol. 55(1999), p.65.

Google Scholar

[4] M. Morcillo, B. Chico, L. Mariaca and E. Otero: Mater. Perform. Vol. 38(1999), p.72.

Google Scholar

[5] Guangyong Wang, Haijiang Wang and Xinglian Li et al. in: Corrosion and protection of natural environment, Chemical Industry Press, Beijing (1997) [In Chinese].

Google Scholar

[6] S. Feliu, M. Morcillo and B. Chico: Corros. Vol. 55(1999), p.883.

Google Scholar

[7] R W. Revie, in: Uhlig's Corrosion Handbook, 2nd edition, Wiley, NY (2000), p.302.

Google Scholar

[8] Y. Y. Chen, H. J. Tzengb and L. I. Weib, et al.: Corros. Sci. Vol. 47(2005), p.1001.

Google Scholar

[9] M. Stratmann and H. Streckel: Corros. Sci. Vol. 30(1990), p.697.

Google Scholar

[10] M. Stratmann and H. Streckel: Corros. Sci. Vol. 30(1990), p.681.

Google Scholar

[11] M. Stratmann, H. Streckel, KT Kim and S Crockett: Corros. Sci. Vol. 30(1990), p.715.

Google Scholar

[12] Qing Qu, Chuanwei Yan and Wei Bai et al.: J. Chinese Soc. Corros. Protect. Vol. 23(2003), p.162 [In Chinese].

Google Scholar