Mugihe cyo gutunganya, guteranya, gusudira, kugenzura ubudodo, no gutunganya ibyapa byimbere byimbere, ibikoresho, hamwe nibindi bikoresho bya tanki idafite ibyuma, ibyanduza ibintu bitandukanye nkibibara byamavuta, ibishushanyo, ingese, umwanda, imyanda ihumanya-icyuma gike cyane. , irangi, gusudira slag, na splatter biratangizwa.Ibi bintu bigira ingaruka kumiterere yubuso bwibyuma bitagira umwanda, byangiza firime ya passivation, bigabanya kurwanya ruswa, kandi bigatuma ishobora kwanduzwa nibitangazamakuru byangirika mubicuruzwa byimiti yatwarwaga nyuma, biganisha kumyobo, kwangirika kwimiterere, ndetse no guhagarika umutima.
Ibigega bitagira umwanda, kubera gutwara imiti itandukanye, bifite ibisabwa byinshi kugirango birinde kwanduza imizigo.Nkuko ubwiza bwubuso bwakorewe imbere mu byuma bidafite ibyuma bisa nkibisanzwe, biramenyerewe gukora imashini, imiti, cyangwaamashanyaraziku byuma bidafite umwanda, ibikoresho, nibindi bikoresho mbere yo koza, gutoragura, no gutambuka kugirango byongere imbaraga zo kwangirika kwicyuma.
Filime ya passivation kumyuma idafite ingese ifite imiterere iranga imbaraga kandi ntigomba gufatwa nkigihagararo cyuzuye cyo kwangirika ahubwo ni ugukora urwego rukingira.Ikunda kwangirika imbere yo kugabanya ibintu (nka ion ya chloride) kandi irashobora kurinda no gusana imbere ya okiside (nkumwuka).
Iyo ibyuma bitagira umwanda bihuye numwuka, firime ya oxyde.
Nyamara, iyi firime irinda ibintu ntabwo ihagije.Binyuze mu gufata aside, impuzandengo yuburebure bwa 10μm yahejuru yicyumairononekaye, kandi ibikorwa bya chimique ya acide bituma igipimo cyo gushonga ahantu hafite inenge kuruta ahandi hantu.Gutyo, gutora bituma ubuso bwose bukunda kuringaniza.Icy'ingenzi, binyuze mu gutoragura no gutambuka, fer na okiside zayo zishonga cyane ugereranije na chromium na okiside zayo, ikuraho chromium yatakaye kandi ikungahaza ubuso hamwe na chromium.Mugihe cyibikorwa bya okiside, hashyizweho firime yuzuye kandi ihamye, hamwe nubushobozi bwiyi firime ikungahaye kuri chromium igera kuri + 1.0V (SCE), hafi yubushobozi bwibyuma byiza, byongera imbaraga zo kurwanya ruswa.
Igihe cyo kohereza: Ugushyingo-28-2023