Official Answer
Answer
Passivation ni imiti ivura (ubusanzwe muri acide ya nitric cyangwa citric) ikuraho 'fer yubusa' hejuru yimpeta idafite ibyuma kandi ikongera chromium-oxyde ikingira. Kubisabwa mubuvuzi, ibi nibyingenzi kugirango wirinde 'ingese' kandi urebe neza ibinyabuzima. Inzira ikurikiza ibipimo bya ASTM A967. Mu mpeta ya spiral, ifite ibice byinshi muburyo bwa hafi, passivation igomba gukorwa neza kugirango aside igere hejuru yimiterere. Niba icyuma cyubusa gikomeje gufatwa hagati yikizunguruka, kirashobora gutuma habaho kwangirika kwa galvanike. Nyuma ya passivation, impeta zogejwe mumazi ya deionion kugirango hatagira ibisigisigi bya shimi bisigara, bishobora gutera ingaruka mbi mubuvuzi.
