基于虚拟仪器的便携式腐蚀电化学测试装置3

29520085ChineseJournalofScientificInstrumentVol129No15May2008:2007201ReceivedData:20072013:(50499335)31,1,2(1300072;2110016):NIDAQ26024EVirtu2alCETS,,LabVIEW6.1VirtualCETSVirtualCETS,:;;;LabVIEW:TG174.3+7:A:530.4140PortablecorrosionelectrochemicaltestsystembasedonvirtualinstrumentHanLei1,SongShizhe1,2(1SchoolofMaterialScienceandEngineering,TianjinUniversity,Tianjin300072,China;2StateKeyLaboratoryforCorrosionandProtection,Shenyang110016,China)Abstract:Aportablecomputerizedsystemforcorrosionratemeasurementwasestablished,whichconsistsofapoten2tiostatbasedoninvertingamplificationcircuitandalaptopcomputerequippedwithanNIDAQ26024Emultifunctioncardandsuitableapplicationsoftware.ThissystemisnamedVirtualCETS(shortforcorrosionelectrochemicaltestsystem).TheapplicationsoftwarewasdevelopedingraphicprogrammingenvironmentLabVIEW6.1,whosefunc2tionsaretoofferavirtualfrontpanel,createthearrayofstimulationsignals,controlthemeasurementprocedureandperformdatadisplay,storageandanalysis.SomeexperimentswereperformedwithVirtualCETSbothinlaboratoryandinthefield.Experimentresultsshowthatthesystemcanbeappliedtogeneralcorrosionelectrochemicaltestcrediblyandconveniently.Keywords:virtualinstrument;corrosionrate;polarizationresistance;LabVIEW1,[122],,,,,,VirtualCETS(Corrosionelectrochemicaltestsystem),/(EFM)[3](EN)[4],904292VirtualCETS2.1VirtualCETS,11VirtualCETSFig.1SetupofVirtualCETSNIDAQ6024EforPCMCIA,81612212,200kS/sD/A;,A/D6024EPCMCIAII,,,2,,6024ECB268LP,,RC68268,(3),,ZF232Fig.2Principlecircuitofthepotentiostat2.2VirtualCETSLabVIEW[5]6.13VirtualCETSFig.3PhotooftheVirtualCETSVCETS.vi,4VI:4,5,1(DAQconfig),,,,2(Testparametersetup),VI5:905,,:(Squarewave)(Singlestep)(Rampsweep)(Stairsweep)(EFM)(OCP)(ZRA),(EIS)3(Runtest),VIDAQ,,,,Ecorr4,,,,Tafel,2.3VirtualCETS6,VirtualCETS21WRAVirtualCETSZFRp(Rp=1k),,16Fig.6Electrochemicalequivalentcircuit1ZFVirtualCETSTable1ResultcomparisonbetweenZFsystemandVirtualCETSRp/SD/SE/ZF24BZF23ZF210103063.2017.53VirtualCETS103741.8415.82VirtualCETS,ZF,3VirtualCETS,,3,3.1/VirtualCETSQ235/,782VirtualCETS32Table2Comparisonbetweenelectrochemicaltechniqueandweightlossmethod/(mma21)0.150.170.14906293.2Q235,TafelQ235(),39(a),(b)(c)(d)Tafel[6],[7]Mans2feld[8]3Q235Table3CorrosionrateforQ235steelinpolyurethanefoamsoakRp/(cm2)icorr/(mcm22)5389Mansfeld50135.69Tafel9.693.3/,VirtualCETS,,,1010Fig.10Frontpanelofwaveletdenoising5:9074VirtualCETS,LabVIEW,VirtualCETS,,[1],.[J],,1998,19(3):3202324.ZHAOJ,SHENZHY.Metalliccorrosionrateanalyzerbasedonthetheoryofweakpotentiostaticpolarizationtest[J].ChineseJournalofScientificInstrument,1998,19(3):3202324.[2].USB[J],,2006,27(6):241922421.ZHAOYT.Designandimplementationofcorrosionmeasurementdevicebasedonuniversalserialbus[J],ChineseJournalofScientificInstrument,2006,27(6):241922421.[3]BOSCHRW,HUBRECHTJ,BOGAERTSWF,etal.Electrochemicalfrequencymodulation:anewelectro2chemicaltechniqueforonlinecorrosionmonitoring[J],Corrosion,2001,57(1):60270.[4],,,.[J].,2001,21(5):3122315.ZHANGJQ,ZHANGZH,WANGJM,etal.AnalysisandapplicationofelectrochemicalnoiseI.Theoryofelectrochemicalnoiseanalysis[J].JournalofChineseSo2cietyforCorrosionandProtection,2001,21(5):3122315.[5]JOHNSONGW,JENNINGSR.LabVIEW[M].,,.:,2002.JOHNSONGW,JENNINGSR.LabVIEWgraphicalprogramming[M].WUJSH,LUJK,trans.Beijing:PekingUniversityPress,2002.[6]ROCCHINIG.Thedeterminationoftafelslopesbythesuccessiveapproximationmethod[J].CorrosionSci2ence,1995,37(6):98721003.[7]ROCCHINIG.Experimentalverificationofthevalidityofthelinearpolarizationmethod[J].CorrosionScience,1997,39(5):8772891.[8]MANSFELDF.Tafelslopesandcorrosionratesfrompo2larizationresistancemeasurements[J].Corrosion,1973,29(10):3972402.,2002,2005,,E2mail:[e-mail]degreein2002andmasterdegreein2005bothfromTianjinUniversity,andisaPhDcandidatenowinTianjinUni2versity.Themainresearchdirectioniselectrochemicalcorrosion.E2mail:[e-mail],,,E2mail:[e-mail]andsupervisorforPhDstudentinTianjinUniversity.Themainresearchdirectioniselectrochemicalcorrosion.E2mail:[e-mail]