WATER TRANSPORT IN ORGANIC COATINGSⅠ: FICKIAN DIFFUSION

J Chin Soc Corr Pro

2002, Vol. 22

Issue (5): 311-315 DOI:

Review

Current Issue | Archive | Adv Search

WATER TRANSPORT IN ORGANIC COATINGSⅠ: FICKIAN DIFFUSION

Jiming Hu;Jianqing Zhang;Deming Xie

浙江大学化学系电化研究室

Download:

PDF(146KB)
Export: BibTeX | EndNote (RIS)

Abstract In the present paper a review was given on water di ffusion behaviors in polymer films and coating impedance according to Fickian pr ocess.In the case of linear Fickian diffusion,a mathematical relationship betwee n the water-uptake in organic coatings and capacitance,C,of coatings was est ablished.The change rate of coating capacitance was mainly depended on the water diffusion coefficient,D,in coatings.In the initial stage of water-uptaking, a linear relationship is shown in the curves lnC(t)～time0.5,with the slope proportional to D0.5.Under the non-linear diffusion,water prefe rentiall y penetrated through the cracks or the boundaries of foreign particles by sheari ng diffusion,while in the bulk coatings by linear one.The contribution by linear diffusion could be eliminated with the presence of obvious porosity,and the coa ting capacitance was mainly determined by the porosity of coatings,θ.The sl ope of the linear part in lnC(t)～t0.5 curves was proportional to θ 0.5.

Key words: organic coatings water transport Fickian diffusion im pedance

Received: 27 February 2001

ZTFLH:

TG174.46

Corresponding Authors: Jiming Hu E-mail: hujiming@263.net

	Service

	E-mail this article
	Add to citation manager
	E-mail Alert
	RSS
	（）
	Articles by authors
	Jiming Hu
	Jianqing Zhang
	Deming Xie

Cite this article:

Jiming Hu; Jianqing Zhang; Deming Xie. WATER TRANSPORT IN ORGANIC COATINGSⅠ: FICKIAN DIFFUSION. J Chin Soc Corr Pro, 2002, 22(5): 311-315 .

URL:

https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2002/V22/I5/311

[1]WangYH .ManualofAnti-corrosionTechnologyforPaintings[M].Beijing:MetallurgicalIndustryPress,1994(王泳厚.实用涂料防腐蚀技术手册[M].北京:冶金工业出版社,1994)
[2]PerezC ,CollazoA ,IzquierdoM ,etal.Characterisationofthebarrierpropertiesofdifferentpaintsystems.partI.experimentalset-upandidealfickiandiffusion[J].ProgressinOrganicCoatings,1999,36:102
[3]MargaritICP ,MattosOR .Aboutcoatingsandcathodicprotection:pos sibilitiesofimpedanceasmonitoringtechnique[J].MaterialsScienceForum,1998,289-292:279
[4]Miskovic-StankovicVB ,StanicMR ,DrazicDM .Corrosionprotectionofaluminiumbyacataphoreticepoxycoating[J].ProgressinOrganicCoatings,1999,36:53
[5]DestreriMDG ,VogelsangJ,FedrizziL ,etal.Waterup-takeevalua tionofnewwaterborneandhighsolidepoxycoatings.partII:electro chemicalimpedancespectroscopy[J].ProgressinOrganicCoatings,1999,37:69
[6]RosaLD ,MonettaT ,BellucciF .MoistureuptakeinorganiccoatingsmonitoredwithEIS[J].MaterialsScienceForum,1998,289-292:315
[7]VanderwelGK ,AdanOCG .Moistureinorganiccoatings-areview[J].ProgressinOrganicCoatings,1999,37:1
[8]DestreriMDG ,VogelsangJ ,FedrizziL .Waterup-takeevaluationofnewwaterborneandhighsolidepoxycoatings.partI:measurementsbymeansofgravimetricalmethods[J].ProgressinOrganicCoatings,1999,37:57
[9]MeulemanW ,VandenkerckhoveR ,TemmermanE .Electrochemicalin vestigationofautomotivecoatingsystems[J].MaterialsScienceForum,1998,289-292:383
[10]Miskovic-StankovicVB ,ZotovicJB ,MaksimovicMD .Corrosionbe haviorofepoxycoatingsinvestigatedbyEIS[J].MaterialsScienceFo rum,1998,289-292:327
[11]YinKM ,WuHZ .Electrochemicalimpedancestudyofthedegradationiforganic-coatedcopper[J].Sur.Coat.Technol.,1998,106:167
[12]ZhangJQ .Studyandevaluationonorganiccoatingsbyelectrochemicalimpedancespectroscopy[J].CorrosionandProtection,1998,19(3):1(张鉴清,曹楚南.电化学阻抗谱方法研究评价有机涂层[J].腐蚀与防护,1998,19(3):1)
[13]BellucciF ,NicodemoL .Watertransportinorganiccoatings[J].Corro sion,1993,49:235
[14]ThomasNL .Thebarrierpropertiesofpaintcoatings[J].ProgressinOr ganicCoatings,1991,19:101
[15]RosaLD ,MonettaT ,MittonDB ,etal.Monitoringdegradationofsingleandmultilayerorganiccoatings[J].J .Electrochem.Soc.,1998,145:3830
[16]LavaertL ,CockMD ,MoorsM ,etal.Influenceofporesonthequalityofasiliconpolyestercoatedgalvanisedsteelsystem[J].ProgressinOr ganicCoatings,2000,38:213
[17]WeijdeDHVD ,WestingEPMV ,WitJHWD .MonitoringtheeffectofenvironmentalchangesoncoatingpropertieswithEIS[J].MaterialsScienceForum,1998,289-292:237
[18]BrasherDM ,KingsburyAH .Electricalmeasurementsinthestudyofimmersedpaintcoatingsonmetal.I .comparisonbetweencapacitanceandgravimetricmethodsofestimatingwater-uptake[J].J.Appl.Chem.,1954,4:62
[19]Miskovic-StankovicVB ,DrazicDM ,TeodorovicMJ .Electrolytepen etrationthroughepoxycoatingselectrodepositedonsteel[J].Corros.Sci.,1995,37:241
[20]WindMM ,LenderinkHJW .Acapacitancestudyofpseudo-fickiandiffusioninglassypolymercoatings[J].ProgressinOrganicCoatings,1996,28:239
[21]DeflorianF ,FedrizziL ,RossiS .Organiccoatingcapacitancemeasure mentbyEIS :idealandactualtrends[J].Electrochim.Acta,1999,44:4243
[22]MaileFJ,SchauerT ,EisenbachCD .Evaluationofthedelaminationofcoatingswithscanningreferenceelectrodetechnique[J].ProgressinOr ganicCoatings,2000,38:117
[23]ZhangZX .ElectrochemistryofSuperMicro-Electrodes[M].Beijing:AcademicPress,1998(张祖训.超微电极电化学[M].北京:科学出版社,1998)
[24]BellucciF ,NicodemoL ,MonettaT ,etal.Astudyofcorrosioninitiationonpolyimidecoatings[J].Corros.Sci.,1992,33:1203

[1]	ZHANG Wei, WANG Jia, ZHAO Zengyuan, LIU Xueqing. EIS STUDY ON THE DETERIORATION PROCESS OF ORGANIC COATINGS UNDER IMMERSION AND CYCLIC WET-DRY CONDITIONS[J]. 中国腐蚀与防护学报, 2011, 31(5): 329-335.
[2]	Jiming Hu; Jianqing Zhang; Deming Xie. WATER TRANSPORT IN ORGANIC COATINGS(Ⅱ) A complicated actual trend[J]. 中国腐蚀与防护学报, 2002, 22(6): 371-374 .

No Suggested Reading articles found!

Viewed

Full text

Abstract

Cited

Shared

Discussed