1. Atmospheric corrosion: atmospheric corrosion ntawm cov khoom siv hlau tsuas yog nyob ntawm cov pa dej thiab cov dej zaj duab xis nyob rau saum npoo ntawm cov khoom. Cov tshuaj vaum ntawm huab cua yog hu ua cov av noo thaum cov nqi corrosion ntawm cov hlau huab cua pib nce ntau yam. Qhov tseem ceeb noo ntawmtooj liabAlloy thiab ntau lwm cov hlau yog nruab nrab ntawm 50% thiab 70%. Cov pa phem ua paug tau muaj qhov ua kom zoo tshaj plaws rau kev xeb ntawm tooj liab alloy. Cog kom lwj thiab lub Hoobkas tso pa tawm, ammonia thiab hydrogen sulfide roj hauv cov chaw tooj liab thiab corrosion ntawm tooj liab thiab tooj liab, tshwj xeeb yog kev nyuaj siab corrosion. C02, yog li, ist2, tsis muaj2 thiab lwm cov pa paug acidic hauv cov yeeb yaj kiab dej thiab hydrolyze, ua cov yeeb yaj kiab dej acidified thiab cov yeeb yaj kiab tiv thaiv tsis ruaj khov.
2. Txaws thaj tsam corrosion: kev coj tus cwj pwm corrosion ntawm copper alloy hauv thaj chaw txaws ntawm cov dej hiav txwv yog ze heev rau qhov ntawd hauv dej hiav txwv. Tej yam tooj liab alloy nrog zoo corrosion zoo rau kev ua kom hnyav rau marine cua yuav tseem corrosces tsis zoo nyob hauv thaj chaw txaws. Lub ci ntsa iab muab cov pa oxygen txaus los ua kom nrawm dua corrosion ntawm hlau, tab sis ua rau tooj liab thiab tooj hlau ntau dua yooj yim. Tus nqi corrosion ntawm tooj liab alloys raug rau thaj chaw txaws feem ntau tsis pub dhau 5μm / a.
3. Kev ntxhov siab corrosion: lub caij tawg ntawm tooj dag yog ib tug sawv cev ntawm kev ntxhov siab corrosion ntawm tooj liab alloy. Caij nplooj zeeg tawg, nrhiav tau nyob rau hauv thaum ntxov xyoo pua 20, tau tawg nyob rau sab qaum ntawm lub plhaub casing uas zuaj mus rau kev ua tsov ua rog. Qhov xwm txheej no feem ntau tshwm sim hauv lub tropics, tshwj xeeb tshaj yog thaum caij ntuj los nag, li no lub npe raws caij raws caij. Vim tias nws muaj feem xyuam rau ammonia lossis ammonia derivatives, nws tseem hu ua Ammonia tawg. Qhov tseeb, muaj cov pa oxygen thiab lwm tus oxidants, thiab muaj cov dej tsis tseem ceeb rau kev ntxhov siab corrosion ntawm tooj dag.
4. Decompose corrosion: tooj dag dezinc yog ib qho ntawm cov tub ceev xwm ntau tshaj plaws, tuaj yeem nrog cov txheej txheem kev ntxhov siab hauv tib lub sijhawm, tuaj yeem tshwm sim ib leeg. Muaj ob hom dezincification: ib qho yog lamellar shedding hom Dezincification, qhia cov qauv corrosion, kev phom sij me me rau kev siv cov ntaub ntawv. Qhov tod yog qhov sib sib zog nqus pob hluav taws xob-zoo li kev txhim kho hom Dezincization, nyob rau hauv daim ntawv ntawm lub corrosion, yog li cov khoom siv zog txo qis, ua kom raug mob ntau.
5. Cov tub rog ib puag ncig corrosion: tooj liab alloy corrosion hauv ntxiv rau lub teb chaws marine, muaj thaj chaw nyob tau ntev thiab muaj ntau yam.
Lub Sijhawm Post: Jun-27-2022