Corrosion Mechanism ntawm Corten Steel: Yuav Ua Li Cas Tiv Thaiv Patina Txhim Kho
Corten steel yog tsim los tsim ib qho tshwj xeeb tiv thaiv patina thaum raug cov ntsiab lus, uas ua rau nws muaj zog tiv thaiv corrosion. Unlike traditional carbon steel, which continues to degrade as rust flakes off and exposes fresh metal, Corten steel's rust layer becomes stable and forms a dense, adherent coating that limits further corrosion.
Cov txheej txheem pib thaum Corten steel raug cov dej noo thiab cov pa oxygen, ua rau lub ntsej muag xeb. Txawm li cas los xij, vim yog cov ntsiab lus alloying, xws li tooj liab (Cu), chromium (Cr), thiab npib tsib xee (Ni), cov txheej txheem corrosion txawv ntawm cov hlau tsis tu ncua. Cov ntsiab lus no ua rau kev txhim kho ntawm cov nplua -cov nplej thiab cov nplaum nplaum nplaum nplaum. Thaum no patina stabilizes, nws ua raws li ib tug tiv thaiv barrier, slowing down ntxiv corrosion thiab tiv thaiv kom txhob raug cov hlau tshiab.
Tooj liab plays lub luag haujlwm tseem ceeb hauv kev tsim cov txheej txheej txheej txheej no los ntawm kev txhawb nqa cov khoom sib txuam ntawm cov khoom xeb ntawm cov hlau. Chromium ntxiv txhim khu kev ruaj ntseg ntawm xeb los ntawm kev tiv thaiv ntau degradation, thiab npib tsib xee muab ntxiv corrosion kuj nyob rau hauv ib puag ncig hnyav.
Qhov tsim ntawm txheej tiv thaiv no nyob ntawm ib puag ncig tej yam kev mob. Rau patina tsim thiab ruaj khov, cov hlau yuav tsum muaj kev hloov pauv ntub thiab qhuav. Hauv thaj chaw uas muaj dej tsis tu ncua lossis muaj kuab paug siab, Corten steel yuav tsis tsim cov patina kom zoo, ua rau muaj kev xeb ntxiv.
