Feem ntau ntawm kev xeb hauv cov khoom hlau tshwm sim hauv ib puag ncig ib puag ncig, uas muaj cov oxygen ib puag ncig, vaum xws li volishing, thiab cua sov. Ntsev txau corrosion yog ib hom kev ua kom zoo thiab muaj kev puas tsuaj ntawm cov kev ua haujlwm hauv lub cev.
Ntsev txau corrosion feem ntau cuam tshuam nrog kev ua kom cov ntsev daws teeb meem rau sab hauv cov ntaub ntawv hlau, ua rau electrochemical cov tshuaj tiv thaiv. Qhov no ua rau muaj kev tsim cov microgalvanic hlwb, nrog rau "cov khoom siv hluav taws xob tsawg electrolyte daws" muaj peev xwm impurity "kev teeb tsa. Kev hloov tshuab hluav taws xob muaj tshwm sim, thiab cov hlau ua raws li anode dissolves, sib sau ua ke cov tebchaw tshiab, piv txwv li, cov khoom xeb corrosion. Chloride ions ua si ib tug pivotal lub luag haujlwm hauv cov txheej txheem corrosion ntawm cov tshuaj tsuag ntsev. Lawv muaj cov peev xwm nyob ruaj khov, yooj yim infiltrating cov hlau cov oxide txheej thiab cuam tshuam cov hlau passivation xeev. Tsis tas li ntawd, chloride ions muaj cov hydration hydration lub zog, ua rau lawv nkag los rau hauv cov hlau saum npoo av, pov tseg oxygen xide txheej, yog li ua rau kev puas tsuaj hlau.
Kev ntsuas dej ntsev yog faib rau ob hom tseem ceeb: ntuj ib puag ncig kev sim thiab ua kom nrawm nrawm sim ntsev txau. Qhov tom kawg siv cov apparatus, hu ua ntsev tshuaj tsuag tshuaj, uas muaj lub ntim tshuaj saib xyuas ib puag ncig. Hauv cov chav no, cov khoom lag luam raug ntsuas rau lawv txoj kev tiv thaiv rau ntsev hnoos tshuaj corrosion. Piv rau ib puag ncig ib puag ncig, cov ntsev kom haum rau hauv cov ntsev tshuaj yuav yog ob peb zaug lossis kaum lub sijhawm ua kom nrawm dua, muaj ntau yam nrawm nrawm dua. Kev kuaj cov ntsev kom huv ntawm cov khoom tso cai rau kev ntsuas luv luv, nrog cov txiaj ntsig zoo ib yam li kev cuam tshuam ntawm kev sib kis ntuj. Piv txwv li, thaum nws yuav siv sijhawm ib xyoos los ntsuam xyuas cov khoom lag luam hauv ib puag ncig sab nraum zoov
Qhov kev sib txig sib luag ntawm ntsev ua haujlwm thiab ntuj ib puag ncig kev sib kis tau lub sijhawm tuaj yeem suav tau raws li hauv qab no:
24 teev ntawm cov ntsev nruab nrab ntsuas ntsuas ≈ 1 xyoo ntawm kev muaj ntuj.
24 teev ntawm acetic acid ntsev tsuag tshuaj ntsuam ≈ 3 xyoo ntawm kev sib kis ntuj.
24 teev ntawm tooj liab-nrawm acetic acid ntsev tsuag tshuaj ntsuam ≈ 8 xyoo ntawm kev sib kis ntuj.
Lub sijhawm Post: Oct-26-2023