Uninzi lwe-corrosion kwizixhobo zetsimbi lwenzeka kwindawo ye-atmospheric, equkethe izinto ezibangela ukubola kunye namacandelo afana neoksijini, ukufuma, ukuhluka kobushushu, kunye nezinto ezingcolisayo.Umhlwa wokutshizwa kwetyuwa luhlobo oluxhaphakileyo noluyonakalisa kakhulu umhlwa womoya.
Umhlwa wokutshizwa kwetyuwa ngokuyintloko ubandakanya ukugqobhoza kwezisombululo zetyuwa eziqhubayo ngaphakathi kwemathiriyeli yesinyithi, ekhokelela kwimpendulo ye-electrochemical.Oku kubangela ukubunjwa kweeseli ze-microgalvanic, kunye ne-"low-potential-metal-electrolyte solution-high-ponal-potency" yokucwangcisa.Ukudluliselwa kwe-electron kwenzeka, kwaye isinyithi sisebenza njenge-anode iyancibilika, yenze ama-compounds amatsha, oko kukuthi, iimveliso zokubola.Iiyoni zekloridi zidlala indima ebalulekileyo kwinkqubo yokuhlwa kwesitshizi setyuwa.Banamandla okungena anamandla, bangena ngokulula kwi-metal oxide kunye nokuphazamisa imeko yesinyithi.Ngapha koko, ii-ion ze-chloride zinamandla asezantsi e-hydration, ezenza ukuba zibhengeze ngokulula kumphezulu wesinyithi, zikhuphe ioksijini ngaphakathi komgangatho okhuselayo we-oxide yesinyithi, ngaloo ndlela ibangela umonakalo wesinyithi.
Uvavanyo lwesitshizi setyuwa luhlelwa ngokweendidi ezimbini eziphambili: uvavanyo lwendalo lokuvezwa kokusingqongileyo kunye novavanyo olukhawulezileyo olwenziweyo olufaniswayo lokusingqongileyo.Le yokugqibela isebenzisa isixhobo sovavanyo, esaziwa ngokuba ligumbi lovavanyo lokutshiza ityuwa, elinomthamo olawulwayo kwaye livelise indawo yokutshiza ityuwa ngokungeyomfuneko.Kweli gumbi, iimveliso zivavanyelwa ukuxhathisa kwazo kwi-corrosion yetyuwa yokutshiza.Xa kuthelekiswa nendalo esingqongileyo, ukuxinana kwetyuwa kwindawo yokutshiza ityuwa kunokuba ngamaxesha amaninzi okanye amashumi amaxesha ngaphezulu, okukhawulezisa isantya sokubola.Ukuqhuba uvavanyo lwesitshizi setyuwa kwiimveliso kuvumela ixesha elifutshane kakhulu lovavanyo, kunye neziphumo ezifana ngokusondeleyo neziphumo zokuvezwa kwendalo.Umzekelo, ngelixa kunokuthatha unyaka omnye ukuvavanya ukubola kwesampulu yemveliso kwindawo yendalo yangaphandle, ukwenza uvavanyo olufanayo kwindawo eyenziweyo eyenziweyo yokutshiza ityuwa kunokuvelisa iziphumo ezifanayo kwiiyure nje ezingama-24.
Ukulingana phakathi kovavanyo lwesitshizi setyuwa kunye nexesha lendalo lokuvezwa kwendalo kunokushwankathelwa ngolu hlobo lulandelayo:
Iiyure ezingama-24 zovavanyo lwesitshizi setyuwa engathathi hlangothi ≈ 1 unyaka wokuvezwa kwendalo.
Iiyure ezingama-24 zovavanyo lwe-acetic acid yetyuwa yokutshiza ≈ iminyaka emi-3 yokuvezwa kwendalo.
Iiyure ze-24 zovavanyo lwetyuwa yetyuwa-i-acetic ekhawulezayo yetyuwa ≈ iminyaka eyi-8 yokuvezwa kwendalo.
Ixesha lokuposa: Oct-26-2023