Ukusuka kwindawo yokujonga i-microscopic, kukho imingxuma emininzi kwi-coating, kunye nobukhulu be-pinholes banele ukuvumela imidiya yangaphandle engcolileyo (amanzi, i-oksijeni, i-chloride ion, njl. njl.) ukufuma okunxulumeneyo, kwenzeka isiganeko se-filamentous corrosion.I-coating ingqimba, i-pinholes encinci, kwaye ingcono ukumelana ne-corrosion ye-substrate.Njengoko kubonisiwe kumzobo, iintlobo ezahlukeneyo zokugquma zichaphazela ukuxhathisa ukubola.Iziphumo zovavanyo zibonisa ukuba xa ubukhulu bokwambathisa bungaphezulu kwe-20μm, isiphumo sokuxhathisa i-corrosion sizinzileyo.
Ukhuseleko lokugquma:
Umgangatho wokwambathisa kunye nokusetyenzwa kwakhona kuchaphazela ukuxhathisa kokugqwesa kokugqibela kweemveliso zokugquma umbala.Ukuba ukukhanya yenziwe ipleyiti ebandayo eqengqelekayo isiseko (kungabandakanyi iplating) ngqo MCL, ngenxa iimveliso umhlwa yentsimbi ukufunxeka lula ukufuma, kwaye akukho ukhuselo yesibini, ngoko isantya umhlwa ngokukhawuleza, ukuba ubukhulu ngokufanelekileyo of zinki amalenki. (i-aluminium plating zinc / aluminium magnesium) substrate, inokudlala indima "ye-firewall", iya kuphucula kakhulu ukuxhathisa kwe-corrosion yeemveliso.
Ixesha lokuposa: Jun-10-2022