Lub hauv paus rau phau ntawv
Titanium anodes, tshwj xeeb tshaj yog cov coated hlau oxides (MMO), suav nrog cov txheej txheem ntawm ntau cov txheej txheem hauv ntau cov txheej txheem hauv ntau yam tshuaj ham Kwv yees lawv lub neej ua haujlwm yog qhov tseeb yog qhov tseem ceeb rau cov txheej txheem kev ua haujlwm, kev nyab xeeb, thiab kev tswj hwm tus nqi. Tsis zoo li cov khoom siv yooj yim yooj yim, anode displadation cuam tshuam nrog complox electrochemical, tshuaj lom neeg, thiab hauv txheej txheem hluav taws xob thiab hauv cov txheej txheem / substrate. Cov lus qhia no paub meej cov qauv kev kuaj me nyuam, kev kuaj mob corrosion, thiab twv kom haum rau kev ntsuas lub neej thiab kwv yees rau lub neej pabcuamabtsis, ua li cas, thiabli casntawm txhua tus txheej txheem.
I. LUB TSWV YIM CWJCHIM
Lub hom phiaj:Txhawm rau tsim cov peev txheej hauv qab, nkag siab cov kev hloov pauv ntawm cov khoom ntiag tug (tswj cov kev ua tsis zoo, muaj kev tiv thaiv, muaj peev xwm) raws sijhawm lossis hauv qab simulated tej yam kev mob. Cov kev ntsuam xyuas no feem ntau yuav tsum tau ua kom ntev rau kev sib cav sib ceg nrawm nrawm.
Tus txheej txheem:Kev tshem tawm lub anode nyob rau hauv cov kev daws teeb meem cuam tshuam (piv txwv li, sim ua cov txheej txheem kev tiv thaiv, h2so4 rau hluav taws xob lossis muaj peev xwm. Saib xyuas lub peev xwm nruab nrab ntawm anode thiab ruaj khov siv electrode (piv txwv li nyiaj calomel {}}}
Lub hom phiaj:Kev txiav txim siab cov khoom noj ua cua sov uas yog cov khoom siv thyode rau corrode lossis kev tshwm sim nthawv nyob rau hauv ib puag ncig tshwj xeeb. Ib qho ruaj khov thiab noble (zoo) ocp feem ntau qhia tau ruaj khov, tsis muaj txheej. Kev hloov mus rau cov nquag ua haujlwm (tsis zoo) tuaj yeem tsim teeb meem coundal degradation, nthuav tawm ntawm titanium substrate, lossis hloov pauv ntawm oxide txheej.
Cov ntsuas tseem ceeb:
Stabilized ocp tus nqi:Qhia vs. ib tus qauv siv electrode (piv txwv li, vs. VECE). Sib piv thawj vs. Post - kev xeem lossis tshaj tawm {{{{}} kev laus.
OCP Drift:Tus nqi lossis qhov ntau ntawm kev hloov pauv nyob rau lub sijhawm thaum lub sijhawm ua haujlwm ruaj khov lossis thaum lub sijhawm ntev -}} lub sij hawm saib xyuas.
Ocp Stability:Hloov pauv lossis suab nrov hauv OCP teeb liab tuaj yeem qhia cov teeb meem corrosion lossis tsis ruaj khov.
Tus txheej txheem:Thov ib qho me me sinusoidal ac voltage (piv txwv li 5 xyoos lossis qis dua hluav taws xob (piv txwv li ntsuas hluav taws xob, thaum ntsuas qhov ua rau AC tam sim no. Colled no nyob rau hauv OCP lossis ntawm ib qho xaiv DC bias muaj feem xyuam rau kev ua haujlwm.
Lub hom phiaj:Probes the dielectric and conductive properties of the electrode/electrolyte interface non-destructively. Nws tau zoo "ntiv tes" lub kaw lus, pom cov ntaub ntawv hais txog:
Coating porosity thiab kev ntseeg siab.
Ob npaug - txheej txheem capacitance ntawm txheej / electrolyte interface.
Hloov chaw tsis kam ntawm cov tshuaj tiv thaiv hluav taws xob.
Txheej tsis kam (ohmic poob nyob rau hauv txheej).
Cov txheej txheem diffusion (warburg immedance).
Qhov pib ntawm substrate corrosion (qis - zaus coj cwj pwm).
Cov kev ntsuas tseem ceeb (muab rho tawm ntawm cov qauv sib npaug):
Solutionion (RS):Kuj ntawm cov electrolyte ntawm kev siv electrode taub thiab anode nto. Cuam tshuam los ntawm conductivity, geometry.
Txheej xob txhuam tsis kam (rpore):Kuj tam sim no ntws los ntawm pores / cov kab nrib pleb hauv txheej. Txo raws li cov coating degrades / ua ntxeem tau.
Txheej Kev Peev Xwm Capitance (CCOAT) / Pej Xeem Theem (CPECATA):Cuam tshuam nrog cov khoom dielectric thiab cov npoo ntawm cov txheej txheem. Nce nrog porosity / cracking (ntau electrolyte nkag) lossis delamination.
Hloov Hloov Hloov Chaw (RCT):Kev tawm tsam cuam tshuam nrog kev ceev ntawm cov kev xav tau ntawm cov tshuaj tiv thaiv hluav taws xob (piv txwv li, clé oxidation, OER). Qis dua RCT feem ntau qhia tau cov kev ua haujlwm siab dua catalicic.Ncetuaj yeem qhia txog passivation los yog ploj ntawm cov chaw nquag.Txo qisYuav qhia cov kev tsis txaus siab uas tsis muaj sab (piv txwv li, substrate corrosion) ua qhov tseem ceeb.
Ob chav txheej capitalance (CDL) / CPEDL:Capacitance ntawm interface qhov twg cov kev tiv thaiv hluav taws xob tau tshwm sim. Nce nrog tseeb electrochemical thaj chaw thaj tsam (roughness, porosity).
Warburg coefficient (σ):Qhia txog kev txwv tsis meej. TSEEM CEEB Yog tias Reactant muab mov lossis cov khoom tshem tawm yog tus nqi - txwv.
CPE exponent (n):Xav tias "qhov zoo tshaj plaws" ntawm lub peev xwm hluav taws xob (n =1} rau cov capacitor, n<1 indicates surface heterogeneity, porosity, or distributed time constants). Tracking changes in 'n' provides insight into microstructural evolution.
Tus txheej txheem:Thov txoj kab sib txawv sib txawv (scan) rau anode piv rau electrode, cheb qab ntawm tus nqi tswj tau (piv txwv li, 5-100 MV / s). Ntsuas lub txiaj ntsig tam sim no.
Lub hom phiaj:
Txheeb xyuas cov txheej txheem redox tshwm sim rau ntawm anode nto (piv txwv li, txo cov xim oxidation, chlorine evolute, oxygen evolution).
Kwv yees lub chaw tsim hluav taws xob hauv hluav taws xob (ECSA) ntawm tus nqi nyob rau hauv tus cwj pwm peaks (yog tias muaj) lossis ob npaug {} txheej} txheej}} txheej} txheej txheem capacitance cheeb tsam.
Tsim nyog ntsuas cov txheej ruaj khov los ntawm kev soj ntsuam cov kev hloov pauv hauv cov duab ncov, cov haujlwm, thiab siv ntau dua cov voj voog lossis tom qab kev laus.
Tshawb xyuas cov tshuaj tiv thaiv txheej txheem (reversibility).
Cov ntsuas tseem ceeb:
Ncov muaj peev xwm (EPA, EPC):Muaj peev xwm qhov twg oxidation thiab txo cov siab tshaj plaws tshwm sim.
Peak cov ciav hlau (IPA, IPC):Qhov loj ntawm oxidation thiab txo cov tshuaj tua. Proportional rau kev ua si thaj chaw thiab cov tshuaj tiv thaiv.
Peak Cais (δep=epa- Epc):Qhov taw qhia ntawm kev tawm tsam reversibility (me dua δep=dua reversible).
Them nyiaj rau peaks (q):Tseem ceeb ntawm tam sim no dhau sijhawm rau lub ncov. Cuam tshuam txog qhov ntau ntawm cov khoom siv nquag koom nrog hauv Redox cov txheej txheem. Txo raws li cov coating degrades lossis cov chaw nquag yog ploj.
Tom qab tam sim no:Ceev tam sim no ceev nyob rau hauv lub cheeb tsam muaj peev xwm uas lub ntsiab kev tawm tsam tshwm sim (piv txwv li, er toj siab). Qhia catalytic kev ua haujlwm rau cov txheej txheem phiaj xwm. Hloov chaw teeb liab deactivity.
Kev tshwm sim onset rau cov kev cuam tshuam:Muaj peev xwm uas tseem ceeb tam sim no rau ib qho tshuaj tiv thaiv tshwj xeeb (piv txwv li, substrate corrosion) pib.
Ii. Kb Kev Kuaj Polarization
Lub hom phiaj:Yuav kom ntsuas tshwj xeeb rau cov kev ntxim nyiam ntawm lub titanium anode rau cov pittingcompized pitting corrosion, ib qho tsis muaj tseeb hom. Nws ntsuas qhov ruaj khov thiab tiv thaiv cov kev ua yeeb yaj kiab passive (cov txheej oxide ntawm Titanium substrate hauv qab MMO txheej) thiab txheej muaj peev xwm tiv thaiv lub substrate. Nws ncaj qha rau kev pheej hmoo ntawm kev puas tsuaj vim pitting.
Tus txheej txheem:
1.immerers anode nyob rau hauv ib tug deagerated, txhoj puab heev uas cuam tshuam rau cov xwm txheej tsis ua hauj lwm (piv txwv li, tsis muaj phua, siab heev). Deering (feem ntau nrog n₂ lossis ar) yog qhov tseem ceeb rau tshem tawm oxygen, uas tuaj yeem npog ntsej muag pitting.
2.Txhua lub peev xwm los ntawm tus nqi me ntsis hauv qab ntawm OCP hauv Anodic tus nqi (piv txwv li, {{mv / s).
3.Continue scanning kom txog thaum lub ntom ntom ntom tam sim no nce ntau zaus thiab ua rau lub caij passivity thiab qhov tshwm sim, EB lossis Epit).
4.im kev thim rov qab cov scan kev taw qhia rov qab rau ntawm Cathodic (tsis zoo).
5.Cov daim duab thim rov qab kom txog rau thaum cov kev txo qis tam sim no mus txog ntawm cov qib passive tam sim no lossis hla lub ntsej muag tig.
Lub hom phiaj:Lub hysteresis loop tsim nruab nrab ntawm sab pem hauv ntej thiab thim rov qab scans yog tus yuam sij:
Rau pem hauv ntej scan:Qhia txog thaj av passive (qis tam sim no) thiab qhov tseem ceeb (Epit) uas muaj kev puas tsuaj hauv zos (pitting) pib.
Thim rov qab scan:Qhia seb puas rov ua cov pa rov qab (tee poob qis dua) lossis txuas ntxiv ua haujlwm sib tw txawm tias muaj peev xwm txo qis. Lub peev xwm uas rov qab scan tam sim no dauv rov qab mus rau theem passive tam sim no yog tusRepassivation Peev XwmlossisKev Tiv Thaiv Muaj Peev Xwm(Eprot).
Qhov tseem ceeb ntawm kev ntsuas & kev txhais lus:
Puas muaj peev xwm (Epit):Lub peev xwm uas lub ntsej muag ntse, txhawb nqa nce hauv qhov tam sim no tshwm sim thaum lubtom ntejLuam theej duab, qhia qhov chaw nres tsheb pib. Ibntau noble(ntau ntxiv) Epit qhia tauKev Tshaj Tawm Ntau Duarau pitting pib.Qi duaXaiv kho txhais tau tias qhov pib qhov pib yooj yim.
Repassivation / Tiv Thaiv Lub Peev Xwm (EPROT):Lub peev xwm ntawmthim hloScan qhov chaw ntom ntom ntom ntom ntom ntom ntom ntom nteg mus rau theem ntawm cov ntom ntom ntom ntom ntom ntom ntom ntom nti Qhov no yog kev sib cav yog qhov tseem ceeb tshaj plaws. Yog hais tias eprot yogntau nobletshaj li anode'sKev Ua Haujlwm Muaj Peev Xwm, cov neeg txheeb xyuas uas twb muaj lawm yuav rov ua kom muaj zog, thiab cov xeb hauv zos tsis zoo li tsis txaus siab. Yog tias cov kev ua haujlwm muaj peev xwm yogntau nobleTshaj li EPROT, txhua lub pits uas yuav pib loj hlob, ua rau muaj kev tawm tsam hnyav thiab tsis ua tiav.
Hystercesis Loop Cheeb Tsam:Thaj chaw uas nyob rau hauv pem hauv ntej thiab thim rov qab scans. Ibloj duahysteresis yoj feem ntau qhianyuaj duaNyob rau hauv repassivepating pits ib zaug tsim, signinging ntau dua kev ntxim hwm kom muaj kev txhawb nqa, ua kom pitting, ua kom pitting, ua kom pitting corrosion. Lub voj tsis zoo lossis negonible qhia tau yooj yim repassivation.
Passive tam sim no ceev (ipass):Qhov tseem ceeb, ruaj khov tam sim no ceev pom ua ntej tawg. Xav txog qhov dav dav corrosion nyob rau hauv lub xeev passive. Ib qho kev nce zuj zus ntxiv ua ntej kev tawg tuaj yeem qhia tau cov pitting ntau lossis dav dav ntawm cov yeeb yaj kiab passive.
Qhov tseem ceeb rau kev ua neej:Ib qho anode nrog lub siab epit thiab, qhov tseem ceeb, lub peev xwm zoo tshaj plaws (muaj peev xwm tshaj tawm) yog cov kev ua haujlwm zoo heev) yog qhov tsis ua hauj lwm tsis ua hauj lwm. Saib xyuas li cas eprot kev hloov (ua kom muaj nobible) tom qab kev laus lossis raug cov kev ua kom ncaj qha ntawm kev ua kom corrosion nyob rau lub sijhawm. Qhov no yog tus kwv yees tseem ceeb ntawm ntev -}}}}} {}}}}}} muaj ib puag ncig.
III. Thermal Cycling Kuaj
Lub hom phiaj:Txhawm rau ntsuas cov neeg kho tshuab kev ntseeg siab thiab adhesion ruaj khov ntawm MMO txheej ntawm lub titanium substrate nyob rau hauv kev ntxhov siab repal. Thermal nthuav tawm coefficient (CTE) tsis sib xws ntawm cov xim hlau ti substrate thiab cov ceramic oxide txheej cuam tshuam thaum kub hloov. Qhov kev ntsuas no Simulates zoo li cov txheej txheem pib- kev ua haujlwm, lossis raug rau kev hloov chaw kub.
Tus txheej txheem:
TXHAIS TAU QHOV KUB THIAB DWELL LUB SIJ HAWM. Cov neeg raug xws li yuav los ntawm chav kub (RT, ~ 25 degree) rau qhov siab tshaj plaws cuam tshuam rau cov txheej txheem lossis qhov phem} cov xwm txheej xwm txheej (piv txwv li 80 degree, 12 degree). Lub sij hawm nyob rau ntawm siab thiab qis kub feem ntau yog sib npaug thiab txaus rau kev sib npaug ntawm thermal sib npaug (piv txwv li, 15-60 feeb).
Tso lub anode nyob rau hauv ib cub muaj peev xwm ntawm cov cua sov tswj thiab cua txias. Cov theem cua txias yog feem ntau qhov tseem ceeb tshaj plaws (kev ntxhov siab quenching).
Qhia cov anode rau rov qab ua voj voog (piv txwv li, 50, 100, 500, 1000 ncig mus.
Tsis tu ncua (piv txwv li, txhua 50 lossis 100 mus kuaj), tshem tawm cov qauv rau kev tshuaj xyuas, nruab nrab ntawm cov cim hluav taws xob (OCP, EIS) los xyuas qhov kev ua kom muaj kev tsis sib haum xeeb.
Lub hom phiaj:Ntxias thiab nrawm tsis ua tiav cov qauv tsav los ntawm thermomechanical qaug zog:
Txheej tawg pleb: Vim yog tensile kev nyuaj siab thaum txias (txheej sib cog lus tsawg dua li substrate).
Txheej txheej delamination / Buckling) Vim yog compressive kev ntxhov siab thaum cua sov (txheej nthuav tsawg dua li substrate) lossis qhov tsis muaj zog cuam tshuam.
Nce porosity: micro - Cov kab nrib pleb qhib kev pab rau lub substrate.
Kev ploj ntawm qhov hluav taws xob sib cuag: delamination sib cais ntawm cov txheej hluav taws xob los ntawm substrate.
Cov ntawv tseem ceeb & tsis ua tiav cov txheej txheem:
Tus naj npawb ntawm cov voj voog mus rau thawj zaug pom kev puas tsuaj:Kev soj ntsuam pom ntawm cov nrib pleb, hlwv, lossis flaking.
Tus naj npawb ntawm cov voj voog kom muaj kev cuam tshuam tseem ceeb hauv kev tsis txaus siab:Ntsuas los ntawm:
Nquag poob hauv OCP (ntawm cov nquag TI muaj peev xwm).
Qhov tseem ceeb txo nyob rau hauv rpore lossis RCct hauv EIS (qhia txog cov txheej txheem nkag mus lossis ploj ntawm kev ua ub no).
Ua kom nce hauv Craat / Cpecoat siab nyob rau hauv EIS (qhia tau ntau zog porosity / Delamination).
Rov tshwm sim ntawm Ti Oxidation / Txo Cov Peaks hauv CV.
Cov cim ntawm cov tsis ua haujlwm hom:Tshaj tawm {{0- kev tsom xam siv meticcopy (sev / eds) los txheeb xyuas qhov xwm thiab qhov chaw tsis txaus siab, pov thawj ntawm substrate oxidation).
Coating Lub cev yuag poob:Ua zoo ntsuas ua ntej thiab tom qab kev caij tsheb kauj vab ntau (yog tias tsis ua haujlwm hnyav).
Qhov tseem ceeb rau kev ua neej:Thermal Cycling Kuj yog qhov tseem ceeb rau anodes hauv cov ntawv thov nrog tsis {{}}} kev hloov pauv kub. Tus naj npawb ntawm kev txhawb nqa ua ntej ntsuas kev ntsuas ntsuas tau muab piv rau txheej sib piv rau txheej nplaum thiab thermomechanical durability. Anodes tsis ntxov nyob rau hauv thermal cycling yog tsis zoo li mus ciaj sia ntev {}}} ntiaj teb ib puag ncig nrog thermal hloov.
IV. Ua kom nrawm dua corrosion / electrochemical kev sim tshuaj ntsuam
Lub hom phiaj:Txhawm rau sim ib xyoo kev ua haujlwm nyob rau hauv lub ntsuas hluav taws xob hauv lub sijhawm ua haujlwm ib txwm muaj (siab kub, siab dua tshiab, txhoj puab heev. Lub hom phiaj yog txhawm rau ntxias cov txheej txheem kev ua tsis ncaj ncees lawm (passivation, passtrate corrosion ntawm cov nqi tsis xws luag) ntawm tus nqi nrawm.
Tub ntxhais lub hauv paus ntsiab lus:Thov ib tug loj heev tab sis tswj electrochemical kev nyuaj siab (muaj peev xwm tam sim no (muaj peev xwm tam sim no, lossis lub zog pulses) thaum ntau zaus ib txhij mus txog qhov kub thiab txias. Qhov nrawm nrawm yog muab los ntawm kev siv hluav taws xob hauv electrochemical (piv txwv li, arrhenius sib npaug rau qhov kub, tafel kinetics rau tam sim no / voltage).
Tus txheej txheem:Thov ib qho tsis tu ncua anodic tam sim no ceevtseem ceeb duatshaj li qhov ua haujlwm ib txwm tam sim no (piv txwv li, 5 x, 5 x, 10 x) rau anode volfolyte (lossis ib qho kev nrawm nrawm, piv txwv li tsawg) ntawm ib qhoKom txog qhov kub(piv txwv li, 40-80 degree, muaj feem cuam tshuam rau cov txheej txheem txwv lossis paub ntau yam). Saib xyuas lub anode muaj peev xwm tivteeb cov kev siv electrode tsis tu ncua. Lub sijhawm tuaj yeem ua ke los ntawm cov sijhawm mus rau lub lim tiam.
Lub hom phiaj:Ua kom nrawm noj cov khoom siv ua kom zoo (kev sib cais) thiab siv cov kev cuam tshuam ntau dua uas yuav ua rau cov khoom siv cuam tshuam lossis txhawb nqa cov khoom siv sab nraud (piv txwv li cov pa roj Qhov kev hloov pauv ntawm anode muaj peev xwm yog qhov taw qhia tseem ceeb.
Cov kev ntsuas tseem ceeb & kev tsis txaus ntseeg:
Muaj Peev Xwm Drift:Ib tug zuj zusntxivHauv anode lub peev xwm ntawm tas li tam sim no qhiakev uaed- Cov txheej txheej tau dhau los ua cov catalalytic, xav tau ntau lub zog (ntau dua overpotential) los tsav tib cov tshuaj tiv thaiv. Qhov no yog qhov tsis ua hauj lwm hom. Ib pliagpoobNyob rau hauv lub peev xwm tuaj yeem qhia kev teeb meem kev puas tsuaj (txheej poob ploj ua kom muaj txiaj ntsig TI ASTRTTRATE).
Lub sijhawm / tag nrho tus nqi hla mus txog qhov muaj peev xwm txav tau yooj yim:Txhais ntawm qhov chaw pib (piv txwv li, {+100 mv, {{mv} mv} mv} MV nce ntxiv) teeb tsa tsis tsim nyog. Lub sijhawm lossis tag nrho tus nqi dhau (tam sim no * Lub sijhawm *
Tshaj tawm - ntsuas kev ntsuam xyuas:Kev kuaj xyuas lub cev yuag, kev tshuaj xyuas pom (txheej poob, cov kev hloov pauv ntawm txheej txheem morphology thiab cov kab ntawv sib txawv ntawm cov txheej sib txawv thiab substrate nkag.
2.potentiostatic laus ntawm lub peev xwm nce siab:
Tus txheej txheem:Tuav lub anode ntawm qhov muaj peev xwm anodictseem ceeb duatshaj li cov kev ua haujlwm ib txwm muaj peev xwm (piv txwv li, {{{v, {v saum ocp lossis operating electrolyste ntawm qhov kub thiab txias.
Lub hom phiaj:Ua kom nrawm txheej oxidation, txhawb kev puas tsuaj evololution (uas tuaj yeem kho cov txheej txheem txheej txheem), thiab ua kom nrawm corrosion txheej txheem. Tshwj xeeb muaj txiaj ntsig rau kev kawm ruaj khov raws li cov neeg hloov chaw lossis anode reversal tej yam kev mob.
Cov kev ntsuas tseem ceeb & kev tsis txaus ntseeg:
Tam sim no lwj:Ib tug zuj zusme zuj zusnyob rau hauv tam sim no ceev ntawm tas li muaj peev xwm qhia taukev uaed- Poob ntawm catalytic kev ua si. Tus nqi ntawm kev lwj yog qhov taw qhia tseem ceeb.
Lub sijhawm / tag nrho cov nqi them mus kom ncav cuag cov kab mob tseem ceeb tam sim no:Txhais ntawm qhov chaw pib (piv txwv li, 50% ploj ntawm qhov tam sim no). Lub sijhawm / nqi them rau qhov pib qhia tau lifespan.
Tshaj tawm - ntsuas kev ntsuam xyuas:Raws li Galvanostatic laus.
Tus txheej txheem:Lub ntsiab lus Anode nyob rau hauv cov kev ua haujlwm electrolyte (los yog txhoj puab heev) ntawm qhov kub siab tshaj (piv txwv li, 60-90 degree)tsis muajthov tam sim no / muaj peev xwm. Ntev: hnub rau lub hlis.
Lub hom phiaj:Ua kom nrawm purely chilation kev xaus / txo cov txheej txheem ntawm cov txheej oxides. Simulates downtime lossis tsis -} kev ua haujlwm hauv lub sijhawm ua haujlwm nyob rau ib puag ncig.
Cov ntsuas tseem ceeb:
Poob phaus:Thawj metric. Kev Ntsuas Xyuas qhov hnyav ua ntej thiab tom qab kev raus dej nrog cov kev ntsuas siab. Yuav tsum tau tu kom huv si kom tshem cov khoom siv corrosion. Lub cev yuag (MG / cm² / hnub lossis zoo sib xws) yog xam.
Kev Ntsuas Tshuaj:Ntsuas cov hlau ions (ti, D, SN, SN thiab lwm yam) hauv electrolyte ntawm icp {} ms lossis AAS rau kev txiav txim siab tus nqi sib cais.
Tshaj tawm -} Immine Electrochemical Testing:OCP, EIS, CV los ntsuas kev cuam tshuam ntawm kev tawm tsam ntawm kev tawm tsam electrochemical kev ua tau zoo.
Nrig Kev Ua Si / SHIP SCRISCTION:Deg kev hloov pauv morphology, pitting, txheej poob.
Kev txiav txim siab tseem ceeb rau kev kuaj sim nrawm:
Nrawm factor siv tau:Kev sib tw tseem ceeb. Kev nrawm nrawm yuav tsum tsis txhob hloov pauvQhov tseem ceeb tshaj lij mechanismCov. Piv txwv li, ntau dhau siab tam sim no ceev yuav ua rau oxygen npuas kev puas tsuaj ntsej muag, lossis kub siab heev yuav ua kom muaj kev tsis muaj tseeb dertagent paths. Kev siv tau tawm tsam tiag - ntiaj teb kev ua haujlwm lossis qis -} acceler acceler acceler accelerວນ yog qhov tseem ceeb. Cov kev ua kom muaj cov xwm txheej ua kom pom tseeb feem ntau tau muab rau cov txheej txheem tshwj xeeb / daim ntawv thov ua haujlwm.
Xaiv Elef Electrolyte Xaiv:Siv cov txheej txheem tiag electrolyte yog qhov zoo tagnrho tab sis qee zaum tsis muaj kev txwv rau kev sim ntev. Simulated electrolytes yuav tsum muaj qhov tseeb replicate cov tsiaj txhoj puab heev (cl au, f⁻, h⁺, ⁺, so₄²⁻ et). Ceevfaj ntawm kev hais txog kev tsis tsim nyog tsis muaj kuab.
Txhais tau cov txheej txheem tsis ua haujlwm:Yuav tsum muaj feem xyuam rau daim ntawv thov. Puas yog 10% voltage nce ntxiv? 20% tsawg dua? Txheej kis? Tsim kom muaj qhov tseeb, ntsuas qhov kawg yog qhov tseem ceeb rau kev sib piv cov anodes sib txawv lossis cov pob zeb sib txawv.
Extrapolation rau kev pabcuam lub neej:Lifespan twv ua ntej yuav muab cov txiaj ntsig kuaj ntsuas sai sai Cov extrapolation no yuav tsum muaj qhov tseem ceeb tsis paub tseeb. Cov txiaj ntsig tau zoo tshaj plaws rauSib piv qebntawm anodes lossis kev tswj hwm zoo, tsis yog lub neej lav. Cov qauv siv feem ntau: Kev Pab Lub Neej ≈ (Ua kom nrawm dua lub neej * Kev nrawm nrawm) / Lub voj voog. Lub Luag Haujlwm Saib Xyuas Nyiaj Txiag rau lub sijhawm ua haujlwm tiag tiag vs. Meem lub sijhawm.
V. Kev kuaj kev ua haujlwm rau kev twv ua ntej lifespan
Tsis muaj ib qho kev xeem twg muab daim duab tiav. Lub cuab yeej ntsuas ruaj khov lifespan sib txuas lus sib txuas lus:
1.Baseline tus cwj pwm:Thawj zaug oCP, EIS, CV, Cyclic Polarization tsim lub "Kev Noj Qab Haus Huv".
2.txoj kev laus sai sai:Siv Galvanostatic / Potentiostatic laus, thermal caij tsheb kauj vab, lossis nce temp immersion raws li qhov xav tau cov teb uas tsis ua tiav.
3.Qhov tshuaj xyuas:Thaum laus, tsis tu ncua ua tsis - kev ntsuam xyuas lossis kev ntsuas tshwj xeeb (OCP, EIS, kev kuaj pom).
4.Post {-} kev laus:Rov ua cov roj av rov ua thiab ntsuas polliccarization tom qab kev laus. Ua kev puas tsuaj (SEM / Eds, Hla {{}}}}} seem ntawm seem, poob phaus).
5.Cov khoom:Txuas kev hloov pauv hauv cov tshuab hluav taws xob hauv tshuab hluav taws xob (RV poob qis, kev hloov pauv ntawm lub cev (tawg
6.Peplayative tsom xam:Revel sib txawv hom, cov pob zeb, lossis txheej txheem txheej txheem raws li kev ua tau zoo hla kev ntsuas suite.
7.Kechanistic to taub: Use the combined data to build a model of how the anode degrades (e.g., gradual dissolution -> increased overpotential -> localized coating breakdown -> substrate attack ->Ua tsis tiav). Qhov no qhia ob qho kev twv ua ntej thiab kev txhim kho txheej txheem kev txhim kho.
8.Covervative twv ua ntej:Siv cov tshuaj kom nrawm nrawm nrawm, sib txuam nrog kev nyab xeeb cov npoo. Cov kev twv ua ntej raws li cov kev cog lus uas muaj kev tso siab raws li theem raws li kev ntsuas hloov pauv thiab cov khoom tsis sib xws.
VI. Tag
Kev kwv yees lub neej ntawm titanium anodes yog qhov nyuaj tab sis kev ua tiav los ntawm kev siv cov txheej txheem hluav taws xob ntawm cov qauv kev sim ua haujlwm ntawm lub cev. Tseem ceeb rau electrochemical tus xeeb ceem (OCP, EIS, CV) muaj kev pom rau hauv lub xeev, cov tshuaj tiv thaiv kinetics, thiab cov phiajcim thaum ntxov. Cyclic Polarization ncaj qha rau kev pheej hmoo tseem ceeb ntawm pitting corrosion. Thermal Cycling ntsuam xyuas cov tshuab kev ntseeg siab hauv qab kev ntxhov siab. Ua kom nrawm corrosion ntsuam xyuas (Galvanostatic / Potentiostatic laus, nce lub sij hawm kom qhia lub sijhawm los ntawm kev ua haujlwm tseem ceeb.
Lub zog dag tsis nyob hauv ib qho kev xeem, tab sis nyob rau hauv kev txhais tau hais tias kev txhais tau los ntawm cov roj teeb no. Los ntawm kev nkag siab "Dab tsi" (cov txheej txheem tshwj xeeb), "vim li cas" (kev ua haujlwm zoo dua qub Kev sim nruj, txuas nrog kev nkag siab meej txog kev txwv nrawm thiab ua kom muaj kev sib piv, siv lub pob zeb sib luag, siv lub pob zeb txhim kho cov tshuab titanium. Nruam txuas ntxiv ntawm cov kev ntsuam xyuas cov kev cai no, ua raws li cov kev paub dhau los, tseem ceeb rau kev nce qib thiab kev ua tau zoo ntawm cov txheej txheem hluav taws xob hauv hluav taws xob.