1.Vim li cas chloride ntsev thiaj li corrosive?
Kev puas tsuaj rau zaj duab xis passivation: Nws tuaj yeem nkag mus thiab rhuav tshem cov yeeb yaj kiab tiv thaiv oxide uas tsis yooj yim tsim rau ntawm cov hlau.
Tsim cov hlwb corrosion: Nws tsim cov hlwb hauv cov cheeb tsam hauv cheeb tsam (xws li khawb thiab crevices), ua rau pitting thiab crevice corrosion, uas yog insidious thiab tob.
High conductivity: Cov tshuaj chloride muaj cov conductivity siab, ua kom cov txheej txheem electrochemical corrosion heev.
Hygroscopicity: Chloride ntsev (xws li NaCl) tau yooj yim nqus dej los ntawm huab cua, tsim cov yeeb yaj kiab electrolyte rau saum npoo.
2.Yuav ua li cas tiv taus cov pa roj carbon zoo tib yam txias- dov coils rau chloride corrosion?
pluag heev. Tsis muaj kev tiv thaiv, nws sai sai ua cov xeb liab hauv chloride ntsev ib puag ncig, nrog rau tus nqi siab heev.
3.Yuav ua li cas tiv taus kub -dip galvanized txias- dov coils rau chloride ntsev corrosion?
Zoo / Nruab Nrab Sacrificial Anodic Protection: zinc txheej corrodes ua ntej steel, muab electrochemical tiv thaiv rau lub substrate. Nyob rau hauv ib puag ncig chloride, cov khoom siv corrosion ntawm zinc (dawb xeb) tuaj yeem ua haujlwm qeeb rau qee qhov, tab sis kev tiv thaiv lub neej nyob ntawm qhov tuab (qhov hnyav) ntawm zinc txheej thiab qhov hnyav ntawm qhov chaw corrosive.
4.Yuav ua li cas tiv taus kub -dip aluminized zinc txias- dov coils rau chloride ntsev corrosion?
Zoo heev
Kev tiv thaiv kev tiv thaiv + kev tiv thaiv kev txi: Txhuas ua cov txheej txheem alumina tuab, thaiv cov xov xwm corrosive; zinc muab kev tiv thaiv kev txi ntawm khawb. Nws lub neej chloride corrosion kuj feem ntau yog 2-6 npaug ntawm cov ntawv ntshiab galvanized steel ntawm tib txheej tuab.
5.Dab tsi yog qhov tseem ceeb cuam tshuam?
Chloride ion concentration: qhov siab dua qhov concentration, qhov ceev ntawm corrosion. Dej hiav txwv, de-icing ntsev, thiab ntug hiav txwv huab cua yog tag nrho cov siab -chloride ib puag ncig.
Ntau zaus ntawm ntub - voj voog qhuav: Qhov no yog qhov mob hnyav tshaj plaws. Lub voj voog ntub dej- txheej txheem ziab kom qhuav ua rau ntsev thiab tsis tu ncua muab cov pa oxygen, ua kom nrawm nrawm (piv txwv li, hauv thaj chaw tidal thiab thaj chaw txaws).
Kub thiab av noo: kub thiab av noo ib puag ncig zoo heev leeb tag nrho cov txheej txheem corrosion.
Kev ncaj ncees ntawm cov npoo npoo: Txhua qhov kev txiav lossis khawb ntawm cov khoom coated yuav dhau los ua qhov pib ntawm corrosion, rhuav tshem cov txheej txheem tiv thaiv.