Page 38 - 腐蚀与防护2024年第十一期

马英文, 等: 1Cr 钢在含 CO 2 井筒环境中的腐蚀行为与耐蚀性

Corrosion&Protection , 2017 , 38 ( 6 ): 456-460 , 482. p ro g ressinformationandformation mechanism of

[ 33 ] 杜明, 朱世东, 张骁勇, 等. 含 Cr低合金钢的 CO 2 腐 CO 2corrosionscaleonCrcontainin g lowallo ysteel

蚀产物膜形成及机理研究进展[ J ] . 腐蚀科学与防护 [ J ] .CorrosionScienceandProtection Technolo gy ,

技术, 2019 , 31 ( 3 ): 335-342. 2019 , 31 ( 3 ): 335-342.

DU M , ZHU S D , ZHANG X Y , etal.Research

CorrosionBehaviorandCorrosionResistanceof1CrSteelin

CO 2 -Contai nin gWellboreEnvironment

1 , 2 1 , 2 3 3 3 3
MAYin g wen , XINGXi j in , MAZelin , LENGGuan gy ao , HANYue , LIGuan g con g

( 1.NationalKe yLaborator y ofOffshoreOilandGasEfficientDevelo p ment , Bei j in g 100028 , China ;

2.CNOOCResearchInstituteCo. , Ltd. , Bei j in g 100028 , China ;

3.StateKe yLaborator y ofPetroleumResourcesandPros p ectin g , ChinaUniversit y ofPetroleum ( Bei j in g ), Bei j in g 102249 , China )

Abstract : The corrosionbehavioroftwot yp esofcasin g steel ( 1CrandN80 ) informationwateratdifferenttem p eratureswas

com p aredandstudiedthrou g hd y namiccorrosiontests.Thecorrosionfeaturesunderdifferentconditionswerecharacterizedin

detailusin gscannin gelectron microsco py ( SEM ), ener gydis p ersives p ectrosco py ( EDS ), andconfocallasermicrosco py

( CLSM ) .Theresultsshowthatatmediumtem p eratureandlowCO 2p artial p ressure ( 50 ℃ , 0.30MPa ), N80steelhada

hi g hercorrosionrateandmoreseverep ittin g corrosioncom p aredwith1Crsteel.Athi g hertem p eratures ( 100 , 114 ℃ ) and

CO 2p artial p ressures ( 0.63 , 0.73MPa ), thecorrosionrateof1CrsteelwasaboutthreetimesthatofN80steel , showin g

severemesacorrosion , whiletheloweravera g ecorrosionrateofN80steelwaslowdue toitsfilm-formin g advanta g e , andthe

substratehadnoobviousp ittin gcharacteristics.Thecom p ositionandp h y sicochemical p ro p ertiesofthep roductfilmhavea

si g nificantim p actonthecorrosionbehaviorofcasin g steel.1Crsteelexhibitssu p erior p erformanceundertheenvironmentof

shallowwellbore.However , itisnotrecommendedtousethissteelinthedee pwellbore , anda pp ro p riatematerialsneedtobe

carefull y selected.

Ke ywords : lowchromiumsteel ; carbonsteel ; CO 2corrosion ; p roductfilm ; a pp licablecondition

( 上接第16页)

OxidationBehaviorofHf+CrCo-modified ( Ni , Pt ) Al Coatin g sat1100℃

1 , 1 , 2 1 , 2 1
RENShuan g xin g YANGYin g fei , RENPan , LIWei

( 1.InstituteofAdvancedWear&CorrosionResistantandFunctionalMaterials , JinanUniversit y , Guan g zhou510632 , China ;

2.InstituteofMetalResearch , ChineseAcadem y ofSciences , Shen y an g 110016 , China )

Abstract : A Hf+Crco-modified ( Ni , Pt ) Alcoatin gonsin g lecr y stalallo yN5wasp re p aredsuccessivel yviacom p osite

electro p latin g ofNi-CrandPt-Hfandthenaluminizin g treatment.Theoxidationtestofthecoatin gwascarriedoutat1100℃

instaticairfor500hincom p arisonwiththeord inar y ( Ni , Pt ) Alcoatin g andHfmodified ( Ni , Pt ) Alcoatin g .TheeffectsofHf

andCrelementsontheoxidationresistanceofthe ( Ni , Pt ) Alcoatin g swerestudiedintermsofcom p arisonoftheoxidation

kinetics , p hasecom p ositionandmor p holo gy afteroxidationofthreecoatin g s.TheresultsshowthattheHf+Crco-modified

( Ni , Pt ) Alcoatin ghadthelowestoxidationrate , thestron g estoxidescaleadh esionandtheli g htestsurfacerum p lin g inthree

coatin g s.Com p aredwiththesin g leHfmodifiedcoatin g , theadditionofCrcoulds y ner g izewithHftoreducethe g rowthrate

ofAl 2O 3andinternalstressofcoatin g .Moreover , theNi-Crla y eractedasabufferla y erbetweenthe ( Ni , Pt ) Alcoatin g and

the substrate , inhibitin g theinter-diffusionbehaviorbetweenthe ( Ni , Pt ) Al coatin g andthesubstrat e.

Ke ywords : Hf+Crco-modified ;( Ni , Pt ) Alcoatin g ; hi g htem p eratureoxidation ; oxidationrate
· 3 0 ·