Ihe kpatara pickling acid na passivation nke igwe anaghị agba nchara tankị

Igwe igwe anaghị agba nchara, n'ihi na-ebu kemịkalụ dị iche iche, nwere nnukwu ihe achọrọ maka igbochi mmetọ ibu.Ebe ọ bụ na elu igwe anaghị agba nchara a na-emepụta n'ụlọ na-adịchaghị mma, ọ bụ ihe a na-emekarị ka a na-arụ ọrụ igwe, kemịkalụ, ma ọ bụelectrolytic polishingna efere igwe anaghị agba nchara, akụrụngwa, na ngwa ngwa tupu ihicha, pickling, na passivating iji kwalite nguzogide corrosion nke igwe anaghị agba nchara.

Ihe nkiri passivation na igwe anaghị agba nchara nwere njiri mara ike na e kwesịghị iwere ya dị ka nkwụsị zuru oke na corrosion kama ọ bụ nhazi nke oyi akwa mkpuchi na-agbasa.Ọ na-eme ka ọ bụrụ ihe na-emebi emebi n'ihu ihe ndị na-ebelata (dị ka ion chloride) ma nwee ike ichekwa ma rụkwaa n'ihu ndị oxidants (dị ka ikuku).

Mgbe igwe anaghị agba nchara na-ekpuchi ikuku, ihe nkiri oxide na-etolite.

Otú ọ dị, ihe nchebe ihe nkiri a ezughị.Site pickling acid, nkezi ọkpụrụkpụ nke 10μm nkeigwe anaghị agba nchara eluna-emebi emebi, na ọrụ kemịkalụ nke acid na-eme ka ọnụọgụ mgbasa na saịtị ntụpọ dị elu karịa ebe ndị ọzọ dị n'elu.Ya mere, pickling na-eme ka elu ahụ dum nwee nguzozi otu.Nke dị mkpa, site na pickling na passivation, ígwè na oxides ya na-agbaze nke ọma ma e jiri ya tụnyere chromium na oxides ya, na-ewepụ oyi akwa chromium na-agwụcha ma na-eme ka elu ya nwee chromium.N'okpuru passivating edinam nke oxidants, a zuru ezu ma kwụsie ike passivation film na-guzobere, na ike nke a chromium-ọgaranya passivation film eru +1.0V (SCE), nso ike nke ọma ọla, na-eme ka corrosion iguzogide nkwụsi ike.