Ama-alloys ethusi anokumelana okuhle kakhulu nokugqwala komkhathi nolwandle, njengethusi le-silicon,ithusi le-aluminiumnjalo njalo.Kumithombo yezindaba jikelele, kubuswa ukugqwala okufanayo.Kukhona ukuthomba okuqinile kokugqwala kwengcindezi esixazululweni lapho kukhona i-ammonia, futhi kukhona amafomu okugqwala asendaweni afana nokugqwala kwe-galvanic, ukugqwala komgodi, nokugqwala kokuhwalala.I-Dezincification yethusi, i-delumination of aluminium bronze, kanye ne-denitrification ye-curonickel yizindlela eziyingqayizivele zokugqwala kuma-alloys ethusi.
Ngesikhathi sokusebenzisana kwama-alloys ethusi nezindawo zomkhathi nezasolwandle, amafilimu avikelayo angenakwenziwa noma angama-semi-passive angakhiwa phezu kwama-alloys ethusi, avimbela ukugqwala okuhlukahlukene.Ngakho-ke, ama-alloys amaningi ethusi abonisa ukumelana nokugqwala okuhle kakhulu ezindaweni ezisemkhathini.
Ukugqwala kwe-atmospheric kwama-alloys ethusi Ukugqwala kwe-atmospheric yezinto zensimbi kuncike ikakhulukazi kumusi wamanzi osemkhathini kanye nefilimu yamanzi engaphezulu kwempahla.Umswakama ohlobene womkhathi lapho izinga lokubola komkhathi wensimbi liqala ukwanda kakhulu libizwa ngokuthi umswakama obalulekile.Umswakama obalulekile wama-alloys ethusi nezinye izinsimbi eziningi uphakathi kuka-50% no-70%.Ukungcola okusemkhathini kunomthelela omkhulu ekugqwaleni kwama-alloys ethusi.Ukungcola okune-acidic okufana ne-C02, SO2, NO2 emkhathini wezimboni zasemadolobheni kuncibilika kufilimu yamanzi kanye ne-hydrolyzed, okwenza ifilimu lamanzi libe ne-asidi kanye nefilimu evikelayo ingazinzi.Ukubola kwezitshalo kanye negesi ephumayo ekhishwa izimboni kwenza igesi ye-ammonia ne-hydrogen sulfide ibe khona emkhathini.I-ammonia isheshisa kakhulu ukugqwala kwe-alloys yethusi neyethusi, ikakhulukazi ukugqwala kwengcindezi.
Ukuthambekela kokugqwala kwamaalloyi ethusi nawethusi ezindaweni ezihlukene zokugqwala komkhathi kuhluke kakhulu.Idatha yokugqwala endaweni ejwayelekile yasolwandle, yezimboni kanye nesezindaweni zasemakhaya ibikwe iminyaka eyi-16 kuye kwengama-20.Ama-alloys amaningi ethusi agqwalile ngokufanayo, futhi izinga lokugqwala lingu-0.1 kuya ku-2.5 μm/a.Izinga lokugqwala kwengxubevange yethusi esimweni esinzima sezimboni kanye nomoya wasolwandle wezimboni kuwuhlelo oluphakeme kunomoya opholile wasolwandle kanye nomkhathi wasemaphandleni.Isimo esingcolisiwe singakhuphula kakhulu ukuhwalala kwengcindezi yethusi.Uyaqhubeka umsebenzi wokubikezela nokuhlukanisa izinga lokugqwala kwama-alloys ethusi ngomkhathi ohlukene ngokusekelwe ezicini zemvelo.
Isikhathi sokuthumela: Jul-04-2022