Page 63 - 腐蚀与防护2024年第十一期

刘雪辉, 等: 高强低合金钢焊接接头在海水中的初期腐蚀行为

[ 20 ] ZHANGTY , LIU W , CHENLJ , etal.Onhowthe [ 21 ] LIUX H , SUIY Q , ZHOUJY , etal.Influenceof

corrosionbehaviorandthefunctionsofCu , NiandMo availablechlorineoncorrosionbehaviouroflowallo y

oftheweatherin g steelinenvironmentswithdifferent marine steelin natural seawater [ J ] .Corrosion

NaClconcentrations [ J ] .CorrosionScience , 2021 , 192 : En g ineerin g , Scienceand Technolo gy , 202 3 , 58 ( 5 ):
109851. 475-481.

InitialCorrosionBehaviorofHi g hStren g thLowAllo y SteelWeldedJointinSeawater

,
LIUXuehui , ZHANG Huixia , SUIYon gq ian g TONG Hon g tao , LIXian g bo

( Ke yLaborator y ofMarineCorrosionandProtection , Luo y an gShi pMaterialInstitute , Qin g dao266237 , China )

Abstract : Theinitialcorrosion behaviorofhi g h stren g thlow allo y steel weldedj ointin seawater wasstudied b y

electrochemica lmethodsandsurfaceanal y sis.Theresultsshowthatthebasemetalzonewithlowinitial p otentialdis p la y edthe

hi g hestcorrosiontendenc y beforeimmersion.Afterimmersioninseawater , thesurface p otentialofbasemetalzoneshowedthe

lar g estfluctuation.Thewelded j ointexhibitedatransitionofanodicdissolutionfromhi g hs p eedtolows p eeddurin g theinitial

corrosion , andthebasemetalzoneofthe j ointhadthehi g hestcurrentdensit y .Theinitialcorrosionp rocessofwelded j oint

develo p edintwoformsof g eneralcorrosionandp ittin g corrosioninseawater.Thecom p ositionofthecorrosionp roductswas

,
mainl y com p osedofα-Fe 2O 3 α-FeOOHandγ-FeOOH.Thecorrosionresistanceofdifferentzonesofthehi g hstren g thlow

allo y steelwelded j ointinseawaterincreasedinorderof basemetalzone , heataffectedzone , weldzone , attheinitialsta g eof

immersioninseawater.

Ke ywords : hi g hstren g thlowallo y steel ; welded j oint ; initialcorrosion ; scannin gkelvinp robe ( SKP ); scannin gvibratin g

electrodetechni q ue ( SVET )

( 上接第48页) LIUJM , LIANGJY.Effectofallo y in g elem entson

[ 15 ] 刘继明, 梁建宇. 合金元素对铁素体不锈钢抗腐蚀性 corrosionresistanceofferriticstainlesssteel [ J ] .

能的影响[ J ] . 山西冶金, 2005 , 28 ( 4 ): 9-12. ShanxiMetallur gy , 2005 , 28 ( 4 ): 9-12.

CorrosionMatchin g ofThreeStainlessSteelsforShi p inSeawater

1 , 1 1 1 2 2
WUZhen gj ian g MAOXu y ao , ZHANGRunlin , WANGNei , ZHANG Huixia , SONGQin gy uan

( 1.WuhanSecondShi pDesi g n& ResearchInstitute , Wuhan430064 , China ; 2.StateKe yLaborator y for

MarineCorrosionandProtection , CSSCLuo y an gShi pMaterialR esearchInstitute , Qin g dao266237 , China )

Abstract : Thecorrosionp ro p ertiesof05Cr17Ni4Cu4Nb , 0Cr16Ni5MoandZG03Cr26Ni7Mo4Nstainlesssteelsinnatural

seawaterwerestudiedb yelectrochemicaltest , crevicecorrosiontestandg alvaniccorrosiontest , combinedwithcorrosion

mor p holo gyobservation , corrosionratecalculationandp otentiod y namicp olarizationcurve.Theresultsshowthatwhenthe

t hreet yp esofstainlesssteelmaterialswerecou p ledin p airs , theircorrosionratesdidnotchan g esi g nificantl y com p aredtotheir

freecorrosionrates , the g alvanic p otentialsra p idl y shifted p ositivel y andreachedstabilit y , andthe g alvaniccurrentwasfarless

2
than 0.3 μ A / cm .Therefore , whenthethreestainlesssteelmaterialsareusedincou p le , g alvanic corrosionwillnotoccur , and

there is g oodmatchin gp erformanceamon g thematerials.

Ke ywords : stainlesssteel ; marine ; matchin gp erformance

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