Cov txheej txheem ntawm kev tiv thaiv cathodic

1) cov txheej txheem tiv thaiv cathodic: ◆ thaum siv kev tiv thaiv cathodic, qhov kev hloov pauv tsis zoo ntawm cov qauv tiv thaiv mus txog yam tsawg kawg yog -850mV lossis ntau qhov tsis zoo (tus txheeb ze tooj liab sulfate siv electrode CSE). ◆ Qhov tsis zoo polarization muaj peev xwm txheeb ze rau cov saturated tooj liab sulfate siv electrode yog tsawg kawg yog 850mV. ◆ Qhov tsawg kawg nkaus cathodic polarization tus nqi ntawm tus qauv nto thiab ruaj khov siv electrode nyob rau hauv kev sib cuag nrog cov electrolyte yog 100mV. ◆ Nyob rau hauv lub xub ntiag ntawm sulfate-txo cov kab mob, lub peev xwm ntawm cov qauv tiv thaiv yog tsis zoo hloov mus rau 950mV (CSE) los yog ntau tshaj. 2) aluminium alloy cathodic tiv thaiv cov txheej txheem: ◆ Qhov tsawg kawg nkaus cathodic polarization tus nqi ntawm cov qauv thiab cov khoom siv hluav taws xob ruaj khov hauv cov electrolyte yog 100mV, cov qauv siv tau rau kev tsim cov polarization lossis cov txheej txheem lwj. ◆ Polarization tej zaum yuav tsis zoo rau -1200mV (CSE). 3) Copper alloy cathodic tiv thaiv cov qauv: ◆ Qhov tsawg kawg nkaus cathodic polarization tus nqi ntawm ruaj khov siv electrode nyob rau hauv cov qauv thiab electrolyte yog 100mV. Polarization tsim los yog cov txheej txheem lwj tuaj yeem siv tau. 4) qhov sib txawv ntawm cov hlau cathodic tiv thaiv cov txheej txheem: ◆ qhov tsis zoo ntawm cov hlau nto thiab cov khoom siv hluav taws xob ruaj khov hauv cov electrolyte yog sib npaug rau kev tiv thaiv lub peev xwm ntawm cov hlau hauv cheeb tsam anode nrog cov kev ua kom muaj zog tshaj plaws. 5) lub zog siab steel cathodic tiv thaiv cov txheej txheem: ◆ ntau tshaj 700MPa steel corrosion yog txo rau 0.0001mm / ib qho kev tiv thaiv muaj peev xwm yog -760 ~ -790mv (Ag/AgCl). ◆ Nyob rau hauv lub xub ntiag ntawm sulfate txo cov kab mob nyob rau hauv ib puag ncig, steel yield zog yog ntau tshaj 700MPa, kev tiv thaiv muaj peev xwm yuav tsum nyob rau hauv ntau ntawm 800-950mV(Ag/AgCl). ◆ Rau cov hlau uas muaj zog tawm los ntau dua 800MPa, kev tiv thaiv muaj peev xwm yuav tsum tsis txhob qis dua -800mV(Ag/AgCl).