1.Hyog ua haujlwm electrochemical tiv thaiv kev ua haujlwm ntawm cov txheej ua haujlwm?
Tej zaum muaj peev xwm sib txawv syergistic cov nyhuv ntawm cov hlau ntau
Zinc-Aluminium Txheej yog feem ntau yog muaj ntawm peb coals: zinc, aluminium thiab magnesium yog} v (txheeb ze} v (txheeb ze rau tus qauv hydrogen hluav taws xob).
Magnesium muaj cov peev xwm qis tshaj plaws thiab dhau los ua "anode" hauv txheej. Thaum lub micro-roj teeb yog tsim nyob rau saum npoo ntawm txheej, magnesium loses hluav taws xob ua ntej thiab yog corroded siv cov hluav taws xob ua ntej thiab txhuas nrog cov peev txheej ntau dua, nrog rau cov hlau hauv paus.
Uniform txi cov txiaj ntsig
Piv nrog tso cai zinc txheej, ntxiv rau ntawm magnesium hauv zinc-aluminium txheej ua rau kev faib cov khoom sib xyaw tam sim no ntau yam. Txawm hais tias txheej txheej puas ib nrab puas, Magnesing Magnesium thiab Zinc tseem tuaj yeem tiv thaiv los ntawm electrochemical kev txiav txim siab kom ncua kev xeb ntawm substrate.
2.What yog lub cev thaiv kev ua haujlwm ntawm cov khoom corrosion?
Nthuav thiab ruaj khov corrosion khoom zaj duab xis
Thaum lub zinc-aluminium txheej nkag mus rau hauv kev sib chwv dej, cov tshuaj tiv thaiv kab mob yuav tshwm sim: Aluminium reacts, thiab zinc los tsim zinc hydroxide.
Cov hydroxides yuav ntxiv tau ntxiv nrog carbon dioxide nyob rau hauv cov huab cua los ua cov nyom xws li yooj yim zinc carbonate thiab yooj yim magnesium.
Cov khoom siv corrosion no tau cuam tshuam los ua ib qho ntom ntom, tiv thaiv cov yeeb yaj kiab, tsis txhob muaj pa yeeb yaj kiab, zoo li muaj qhov sib txawv "kom cais txoj kev xeb chlosive.
Lub luag hauj lwm tshwj xeeb ntawm Aluminium keeb
Aluminium tuaj yeem tsim cov amorphoud colkroxide colloid nyob rau hauv corrosion khoom zaj duab xis, txhim kho lub ntom ntom nti thiab nplaum ntawm zaj duab xis, thiab ntxiv txhim kho cov nyhuv.
3.Qhov yog cov dab tsi ntawm cov txheej?
Microstructure ntawm Multiphase alloys
Lub microstructure ntawm zinc-txhuas feem ntau yog muaj ntawm zinc-nplua nuj theem, aluminium-zinc-zinc txhuas yooj yim. Qhov txheej txheem multiphase ua rau cov txheej txheem los ua ib qho nyuaj micro-roj teeb network thaum lub plab corrosion, maj mam txo tus nqi xeb ntawm ib theem.
Cov khoom sib faib ntawm cov magnesium
Magnesium yog dispersed nyob rau hauv cov qauv ntawm cov khoom ntawm cov khoom zoo lossis cov tshuaj zoo, ua kom muaj kev sib xyaw ua ke thiab zam kev ua kom nrawm hauv zos.
4.What yog qhov zoo piv nrog cov khaub ncaws ua ib txwm muaj?
Lub corrosion tsis kam ntawm zinc-txhuas-magnesium txheej yog 5-10 zaug uas ntawm cov txheej txheem zinc me me, thiab nws muaj qhov tseem ceeb nyob hauv cov dej hiav txwv hnyav xws li dej hiav txwv thiab cov cua sov.
Lub galvanized txheej mas pub rau txoj kev tiv thaiv kev txi ntawm zinc, cov khoom xeb yog xoob thiab corrosion kuj yog txwv.
Lub corrosion tsis kam ntawm zinc-txhuas txheej yog qhov zoo dua li ntawm zinc txheej, tab sis thaum cov ntsiab lus magnesium yog tsis txaus, qhov ceev ntawm cov khoom ua yeeb yam khoom ua tsis zoo.
5.Qhov yog cov ntawv teev npe raug yog dab tsi?
Marine ib puag ncig: Offshore cua fais fab yees, chaw nres nkoj cov chaw, thiab lwm yam, tiv thaiv cov ntsev txau corrosion.
Cov huab cua muaj: cov nroj tsuag tshuaj, cov nroj tsuag hluav taws xob, thiab lwm yam, tiv taus cov kua qaub (xws li so₂) thiab hmoov av.
Kev tsim kho teb: ru tsev hlau thiab cov qauv steel, uas nyob twj ywm corrosion-resistant txawm tias tom qab lub sij hawm ntev thiab ultraviolet rays.