Thaum cov khoom siv hlau raug rau huab cua thiab dej pa ntev ntev, lawv yooj yim raug rau oxidative corrosion, ua rau xeb ntawm cov hlau nto.
Yuav kom daws tau qhov teeb meem ntawm kev xeb hlau, tib neeg tau tsim cov xim tiv thaiv xeb. Nws cov hauv paus ntsiab lus tiv thaiv xeb feem ntau suav nrog txoj cai thaiv thiab txoj cai tiv thaiv cathodic.
Ua ntej tshaj plaws, ib qho ntawm cov ntsiab cai tiv thaiv xeb ntawm cov xim tiv thaiv xeb yog lub hauv paus ntsiab lus thaiv. Cov xim tiv thaiv xeb muaj cov tshuaj uas tuaj yeem tsim cov zaj duab xis tiv thaiv. Cov zaj duab xis tiv thaiv no tuaj yeem npog qhov chaw ntawm cov hlau, thaiv cov pa thiab dej thiab tiv thaiv lawv kom tsis txhob xeb cov hlau. Cov txheej txheem tiv thaiv no ua lub luag haujlwm hauv kev cais cov hlau ntawm ib puag ncig sab nraud, yog li ua kom lub neej ua haujlwm ntawm cov khoom hlau ntev dua.
Lwm txoj cai tiv thaiv xeb yog txoj cai ntawm kev tiv thaiv cathodic. Cov xim tiv thaiv xeb feem ntau muaj qee cov hlau ions. Cov hlau ions no tuaj yeem tsim cov khoom siv hluav taws xob tiv thaiv ntawm cov hlau nto, tig cov hlau mus rau hauv anode, yog li txo qhov kev cuam tshuam oxidation ntawm cov hlau nto thiab qeeb qeeb qhov kev xeb ntawm cov hlau. Cov xim tiv thaiv xeb no tuaj yeem tsim kev tiv thaiv cathodic zoo li zinc, txhuas thiab lwm yam hlau, yog li ua tiav kev tiv thaiv xeb ntawm cov hlau.
Feem ntau, lub hauv paus ntsiab lus tiv thaiv xeb ntawm cov xim tiv thaiv xeb feem ntau qeeb qhov tshwm sim ntawm kev xeb hlau los ntawm kev thaiv thiab cathodic tiv thaiv, thiab tiv thaiv qhov zoo thiab lub neej ua haujlwm ntawm cov khoom hlau. Yog li ntawd, hauv kev siv engineering tiag tiag, nws yog ib qho tseem ceeb heev uas yuav tsum xaiv cov xim tiv thaiv xeb tsim nyog, uas tuaj yeem ua rau lub neej ntawm cov khoom hlau ntev tshaj plaws thiab txo cov nqi txij nkawm.
Lub sijhawm tshaj tawm: Lub Ib Hlis-18-2024