铬、铜、镍和Ca的低碳钢腐蚀行为合成自来水

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Aqueouscorrosionbehaviorsofthelow-alloysteelswithsmallamountsofCr,Cu,NiandCainsynthetictapwaterwerestudiedbyelectrochemicalcorrosiontests(potentiodynamicpolarizationtests,electrochemicalimpedancespectroscopy(EIS))andanalyticaltechniques(XPS,EPMA).Potentiodynamicpolarizationtestrepresentedthatallcurvesshowedactivecorrosionbehaviorandcorrosionpotentialwasshiftedtonobledirectionandcorrosionratetendedtodecreaseastheresultofalloying.ResultsofEISmeasurementshowedthatthemorethecontentofelement,thelargerthepolarizationresistance.Itcanbeseenthattheseresultswerecausedbytheformationofacoherentprotectivefilm,whichcontainedalloyingelements.Actually,

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