Copper alloys muaj kev tiv thaiv zoo rau atmospheric thiab seawater corrosion, xws li silicon bronze,txhuas bronzethiab lwm yam.Nyob rau hauv dav dav, nws yog dominated los ntawm uniform corrosion.Muaj kev nyuaj siab corrosion tsis kam nyob rau hauv cov tshuaj nyob rau hauv lub xub ntiag ntawm ammonia, thiab kuj muaj cov ntaub ntawv corrosion hauv zos xws li galvanic corrosion, pitting corrosion, thiab abrasion corrosion.Dezincification ntawm tooj dag, delumination ntawm txhuas bronze, thiab denitrification ntawm cupronickel yog cov cim ntawm corrosion nyob rau hauv tooj liab alloys.
Thaum lub sij hawm sib cuam tshuam ntawm tooj liab alloys nrog atmospheric thiab marine ib puag ncig, passive los yog semi-passive tiv thaiv zaj duab xis yuav tsim nyob rau saum npoo ntawm tooj liab alloys, uas inhibits ntau yam corrosion.Yog li ntawd, feem ntau tooj liab alloys qhia zoo heev corrosion kuj nyob rau hauv atmospheric ib puag ncig.
Atmospheric corrosion ntawm tooj liab alloys 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.Tus txheeb ze humidity ntawm huab cua thaum tus nqi corrosion ntawm cov hlau cua pib nce sharply yog hu ua qhov tseem ceeb humidity.Qhov tseem ceeb ntawm cov av noo ntawm tooj liab alloys thiab ntau lwm yam hlau yog nruab nrab ntawm 50% thiab 70%.Cov pa phem hauv huab cua muaj qhov cuam tshuam loj rau kev xeb ntawm tooj liab alloys.Cov kua qaub kua qaub xws li C02, SO2, NO2 nyob rau hauv lub nroog kev lag luam huab cua yog yaj nyob rau hauv cov dej zaj duab xis thiab hydrolyzed, uas ua rau cov dej zaj duab xis acidified thiab cov zaj duab xis tiv thaiv tsis ruaj khov.Kev lwj ntawm cov nroj tsuag thiab cov pa tso tawm los ntawm cov chaw ua haujlwm ua rau ammonia thiab hydrogen sulfide gas muaj nyob rau hauv qhov chaw.Ammonia ua kom nrawm nrawm ntawm tooj liab thiab tooj liab alloys, tshwj xeeb tshaj yog kev nyuaj siab corrosion.
Lub corrosion susceptibility ntawm tooj liab thiab tooj liab alloys nyob rau hauv txawv atmospheric corrosion ib puag ncig yog txawv heev.Corrosion cov ntaub ntawv nyob rau hauv dav marine, industrial thiab nyob deb nroog atmospheric ib puag ncig tau tshaj tawm rau 16 mus rau 20 xyoo.Feem ntau cov tooj liab alloys yog uniformly corroded, thiab tus nqi corrosion yog 0.1 txog 2.5 μm / a.Tus nqi corrosion ntawm tooj liab alloy nyob rau hauv hnyav industrial cua thiab industrial marine cua yog ib qho kev txiav txim ntawm qhov loj dua li ntawm me me marine cua thiab nyob deb nroog.Cov huab cua tsis huv tuaj yeem ua rau muaj kev ntxhov siab ntau ntxiv ntawm cov tooj dag.Kev ua haujlwm tab tom npaj los kwv yees thiab faib cov nqi ntawm corrosion ntawm tooj liab alloys los ntawm cov cua sib txawv raws li ib puag ncig yam.
Lub sij hawm xa tuaj: Plaub Hlis-04-2022