Answer
Passivation nubuvuzi bwa chimique (mubisanzwe hamwe na acide nitric cyangwa citric) ikuraho ibyuma byubusa hejuru yimpeta zidafite ingese kandi bikongerera imbaraga zo kurinda chromium-oxyde. Mugihe cyo gutekesha no gutunganya, microscopique ibice byibyuma bya karubone biva mubikoresho birashobora gushirwa mubutaka. Niba bidakuweho, ibyo bice bizabora, biganisha ku kwangirika kwangirika ndetse no mu byuma bitagira umwanda. Ubusanzwe inzira igengwa na ASTM A967 cyangwa AMS 2700. Kubisaba ubuvuzi cyangwa ibiryo byo mu rwego rwibiribwa, passivation ni itegeko kugirango ibinyabuzima bihuze kandi birinde kwanduza. Hatabayeho passivation, umutungo 'udafite ingese' wangiritse kurwego rwa microscopique, ibyo bikaba bishobora gutuma umuntu ananirwa hakiri kare mubidukikije byangirika.
