ROLE OF SALT PARTICLE DEPOSITION IN THEINITIATION AND PROPAGATION OF ATMOSPHERIC CORROSION

J Chin Soc Corr Pro

2004, Vol. 24

Issue (3): 155-158 DOI:

Research Report

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ROLE OF SALT PARTICLE DEPOSITION IN THEINITIATION AND PROPAGATION OF ATMOSPHERIC CORROSION

Jia WANG

中科院青岛海洋研究所

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Abstract The role of salt particle deposition in the initiation and propagation of atmospheric corrosion was studied using potential distribution measurement.The results showed that the necessary condition for the atmospheric corrosion initiation was the relative humidity higher than that over saturated solution of the salt particle,during which the salt particle absorbed water from the air and condensed rolyte layer on the metal surface.At the same time,non-homogeneous potential distribution with volcano type was formed around the place of salt deposition.The peak potential Ep and valley potential Ev changed drastically with rapid change of relative humidity,while the potential of the metal matrix remained.The difference of the peak potential and the valley potential Ep-Ev,the potential difference of the corrosion battery,increased rapidly with increasing the number of dry-wet cycles,which increased corrosion rate,too.It was also found out that the chemical distributions has close relationship with potential distribution on the metal surface with salt particle deposition.The model described the non-homogeneous potential distribution over the metal with salt deposition was proposed and the initiation and propagation of atmospheric corrosion caused by the salt deposition was elucidated,based on above findings.

Key words: atmospheric corrosion potential corrosion product

Received: 05 September 2002

ZTFLH:

TG172.2

Corresponding Authors: Jia WANG E-mail: jwang@ms.qdio.ac.cn

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Cite this article:

Jia WANG. ROLE OF SALT PARTICLE DEPOSITION IN THEINITIATION AND PROPAGATION OF ATMOSPHERIC CORROSION. J Chin Soc Corr Pro, 2004, 24(3): 155-158 .

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2004/V24/I3/155

[1]LloydGO .25 yearsofresearchinatmosphericcorrosion[J].Br.Corros.J .,1990,25(1):30
[2]LobnigRE ,SiconolfiDJ,Psota-KeltyL ,etal.Theeffectofsub microammoniumsulfateparticlesonthecorrosionofzinc[J].J .Electrochem.Soc.,1996,143(5):1539
[3]WalterGW .LaboratorysimulationofatmosphericcorrosionbySO2[J].Corros.Sci.,1991,32(12):1331
[4]LobnigRE ,FrankenthalRP ,SiconolfiDJ ,SinclairJD .Theeffectofsubmicroammoniumsulfateparticlesonthecorrosionofcopper[J].J .Electrochem.Soc.,1993,140(70):1902
[5]WangJ.Potentialdistributionoverthemetalwithsaltparticledepo sitioninatmosphere[J].J .ChinSoc.Corros.Prot.,2004,24(1);1-5
[6]O’BrienFEM .Thecontrolofhumiditybysaturatedsaltsolution[J].J .ScientificInstrumentsandPhysicalinIndustry,1948,25(3):73-76
[7]EvensUR .Trans.byHuaBD .CorrosionandOxidationofMetals[M].Beijing:MechanicalIndustryPress,1976,93(EvensUR .华保定译.金属腐蚀与氧化[M ].北京:机械工业出版社,1976,93)

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