Ib qho ntawm cov laj thawj tseem ceeb vim li cas tooj liab tiv taus corrosion heev yog nws lub peev xwm los tsim cov txheej txheem oxide tiv thaiv ntawm nws qhov chaw thaum raug huab cua. Cov txheej no, hu ua patina, yog txheej nyias ntawm tooj liab oxide uas tsim ib txwm nyob rau saum npoo ntawm cov nplooj ntawv tooj liab. Patina tiv taus corrosion heev thiab yog li tiv thaiv cov ntawv tooj liab hauv qab los ntawm kev raug cua thiab dej.
Ntxiv rau nws lub peev xwm los tsim kev tiv thaiv patina, tooj liab kuj tseem tiv taus corrosion thaum raug rau lwm qhov chaw corrosive, xws li acidic lossis alkaline daws. Qhov no feem ntau yog vim nws tsis tshua muaj solubility hauv cov kev daws teeb meem, txhais tau hais tias tooj liab tsis yaj yooj yim hauv acids lossis hauv paus. Yog li ntawd, tooj liab tuaj yeem tiv thaiv corrosion txawm nyob rau hauv qhov chaw acidic lossis alkaline heev.
Lwm qhov laj thawj vim li cas tooj liab tiv taus corrosion yog nws lub peev xwm los kho nws tus kheej tiv thaiv oxide txheej. Yog hais tias lub patina puas lawm los yog tshem tawm ntawm qhov chaw ntawm daim ntawv tooj liab, lub hauv paus tooj liab tuaj yeem hnov mob nrog huab cua thiab tsim cov txheej txheem oxide tshiab. Qhov kev muaj peev xwm kho tus kheej no ua kom cov ntawv tooj liab tuav nws lub sijhawm ntev corrosion.
