水環(huán)境中改進(jìn)型腐蝕電化學(xué)傳感器的研制與應(yīng)用.pdf

1、水環(huán)境中改進(jìn)型腐蝕電化學(xué)傳感器的研制與應(yīng)用DevelopmentandApplicationsofImprovedElectrochemicalCorrosionsensorinAquaticEnvironment國(guó)家自然科學(xué)基金重大項(xiàng)目(No50499335)國(guó)家科技支撐計(jì)劃項(xiàng)目(2007BAB27804)碩士學(xué)位論文學(xué)科專業(yè)：撾魁堂研究生：至盔指導(dǎo)教師：塞遺蜇麴援天津大學(xué)材料科學(xué)與工程學(xué)院二零零八年八月ABSTRACTMonitor

2、inganddetectingcorrosionofmetalstructuresinanaquaticenvironmentisaneffectivewaytodecreasedamagescausedbycorrosionproblemsofthemItmakesgreatsensetodevelopatypeofelectrochemicalcorrosionsensorswhichcouldconductmeasurements

3、directlyontargetstructures，inwhichwayusefulinformationconcerningcorrosionprocesscouldbeobtainedWhenelectrochemicalmeasurementsareapplieddirectlytOthosestructures，thekeypointistestrictthesignaldistributionSothisworkstarte

4、dwithaninvestigationofeffectsofvariousconfigurationsoftheelectrodesystemonthesignaldistributionTheexperimentalparametersinvolvedinthisworkwere：theareaoftheauxiliaryelectrode(SA)，thedistancebetweentheauxiliaryelectrodeand

5、theworkingelectrode(D)，andtheresistivityofelectrolyteItwasfoundthatinelectrolyteofhighresistivitysuchasdistilledwaterandtapwatershorteningDordecreasingSAcouldyielddecreaseinsignaldistributionHoweversucheffectswerenotobse

6、rvedinseawaterwhichhasamuchlowerresistivityAnelectrochemicalcorrosionsensorwasdesignedandfabricatedonthebasisoffindingsshownabove，anditwasthenevaluatedinlaboratoryItwasfoundthatthesensorwascapableofrestrictingresponsesig

7、naldistributioninsomeresistivemediumssuchastapwaterandastablepotentialofitsreferenceelectrodewasalsoobservedduringthetestInaddition，thesensorwasusedondifferentpositionsofanironplatecoatedwithrustresistantzinctomeasurepol

8、arizationresistanceTheresultsshowedthatmeasurementsperformedonpositionsofdifferentsurfaceconditionswouldyielddifferentvalues。whichmeansafinecurrentconfinementiSachievedwiththeuseofthesensotKEYWoRDS：corrosionelectrochemic