1. Atmospheric corrosion: atmospheric corrosion ntawm cov ntaub ntawv hlau feem ntau yog nyob ntawm cov dej vapor hauv cov cua thiab cov yeeb yaj kiab dej ntawm cov khoom siv. Lub atmospheric txheeb ze humidity hu ua qhov tseem ceeb humidity thaum corrosion tus nqi ntawm hlau cua pib nce sharply. Qhov tseem ceeb humidity ntawmtooj liaballoy thiab ntau lwm yam hlau yog nruab nrab ntawm 50% thiab 70%. Cov pa phem atmospheric muaj qhov cuam tshuam tseem ceeb ntawm corrosion ntawm tooj liab alloy. Nroj tsuag lwj thiab lub Hoobkas tso pa roj, ammonia thiab hydrogen sulfide gas nyob rau hauv cov huab cua, ammonia ho ua kom lub corrosion ntawm tooj liab thiab tooj liab alloy, tshwj xeeb tshaj yog kev nyuaj siab corrosion. C02, SO2, NO2 thiab lwm yam acidic kuab paug nyob rau hauv lub nroog muaj cua yaj nyob rau hauv cov dej zaj duab xis thiab hydrolyze, ua rau cov dej zaj duab xis acidified thiab cov zaj duab xis tiv thaiv tsis ruaj tsis khov.
2. Splash cheeb tsam corrosion: tus cwj pwm corrosion ntawm tooj liab alloy nyob rau hauv lub splash cheeb tsam ntawm dej hiav txwv yog heev ze rau qhov uas nyob rau hauv lub hiav txwv huab cua. Txhua tus tooj liab alloy nrog zoo corrosion kuj mus rau hnyav Marine cua yuav kuj muaj corrosion kuj zoo nyob rau hauv lub splash cheeb tsam. Lub spatter cheeb tsam muab cov pa oxygen txaus los txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau nws muaj cov pa oxygen txaus, nws yuav ua rau cov hlau tsis huv, tab sis ua rau cov tooj liab thiab tooj liab alloy yooj yim dua nyob twj ywm blunt. Tus nqi corrosion ntawm tooj liab alloys raug rau thaj tsam txaws feem ntau tsis tshaj 5μm / a.
3. Kev ntxhov siab corrosion: lub caij tawg ntawm tooj dag yog ib tus neeg sawv cev ntawm kev ntxhov siab corrosion ntawm tooj liab alloy. Cov kab nrib pleb raws caij nyoog, pom nyob rau hauv lub xyoo pua 20th thaum ntxov, yog cov kab nrib pleb nyob rau sab sauv ntawm lub plhaub casing uas crumple mus rau lub taub hau. Qhov no tshwm sim feem ntau tshwm sim nyob rau hauv lub tropics, tshwj xeeb tshaj yog thaum lub caij los nag, li no lub npe raws caij nyoog cleft. Vim hais tias nws muaj feem xyuam rau ammonia los yog ammonia derivatives, nws tseem hu ua ammonia tawg. Qhov tseeb, muaj cov pa oxygen thiab lwm yam oxidants, thiab muaj dej kuj tseem ceeb rau kev ntxhov siab corrosion ntawm tooj dag.
4. Decomposition corrosion: tooj dag dezinc yog ib qho ntawm feem ntau cov tooj liab alloy decomposition corrosion, tuaj yeem nrog cov txheej txheem kev ntxhov siab corrosion tib lub sijhawm, kuj tuaj yeem tshwm sim ib leeg. Muaj ob hom kev dezincification: ib qho yog lamellar shedding hom dezincification, uas qhia cov qauv corrosion, kuj me me rau kev siv cov ntaub ntawv. Lwm qhov yog qhov sib sib zog nqus bolt zoo li kev txhim kho hom dezincization, nyob rau hauv daim ntawv ntawm lub qhov corrosion, kom cov khoom siv zog txo qis, kev puas tsuaj loj.
5. Marine ib puag ncig corrosion: tooj liab alloy corrosion nyob rau hauv Marine ib puag ncig ntxiv rau Marine huab cua, muaj dej hiav txwv splashing cheeb tsam, tidal ntau thiab tag nrho immersion cheeb tsam.
Post lub sij hawm: Jun-27-2022