Itandukaniro riri hagati yo kuvura fosifati na passivation mubyuma biri mubikorwa byabo.

Fosifate nuburyo bwingenzi bwo kwirinda ruswa mu bikoresho byuma.Intego zayo zirimo gutanga kurinda ruswa ibyuma fatizo, gukora nka primer mbere yo gushushanya, kongera imbaraga zo kurwanya no kwangirika kwangirika, no gukora amavuta yo gutunganya ibyuma.Fosifati irashobora gushyirwa mubwoko butatu ukurikije uburyo bukoreshwa: 1) gutwikira fosifati, 2) gukonjesha gukonje kwa fosifati, na 3) fosifike ishushanya.Irashobora kandi gushyirwa mubwoko bwa fosifate ikoreshwa, nka fosifike ya zinc, fosifate ya zinc-calcium, fosifate y'icyuma, fosifike ya zinc-manganese, na fosifate ya manganese.Byongeye kandi, fosifati irashobora gushyirwa mubyiciro n'ubushyuhe: ubushyuhe bwo hejuru (hejuru ya 80 ℃) fosifatiya, ubushyuhe bwo hagati (50-70 ℃) fosifati, ubushyuhe buke (hafi 40 ℃) fosifati, hamwe nubushyuhe bwicyumba (10-30 ℃) fosifati.

Ku rundi ruhande, ni gute passivation ibaho mu byuma, kandi ni ubuhe buryo bukoreshwa?Ni ngombwa kumenya ko passivation ari ibintu biterwa no gukorana hagati yicyuma nicyiciro cyigisubizo cyangwa nibintu bifitanye isano.Ubushakashatsi bwerekanye ingaruka zo gukuramo imashini kumyuma muburyo bworoshye.Ubushakashatsi bwerekana ko guhora kwangirika hejuru yicyuma bitera ihinduka rikomeye mubushobozi bwicyuma, bigakora ibyuma muburyo bworoshye.Ibi birerekana ko passivation ari intera intera ibaho mugihe ibyuma bihuye nuburyo bukoreshwa mubihe bimwe.Amashanyarazi ya pasifike abaho mugihe cya anodic polarisiyasi, biganisha ku guhinduka mubushobozi bwicyuma no gushiraho okiside yicyuma cyangwa umunyu hejuru ya electrode, bigakora firime ya pasiporo kandi bigatera passivasi yicyuma.Ku rundi ruhande, passiwasi ya chimique, ikubiyemo ibikorwa bitaziguye bya okiside nka HNO3 yibanze ku cyuma, gukora firime ya oxyde hejuru, cyangwa kongeramo ibyuma byoroshye byoroshye nka Cr na Ni.Muri passiwasi yimiti, kwibumbira hamwe byongeweho okiside ntigomba kuba munsi yagaciro gakomeye;bitabaye ibyo, ntishobora gutera passivation kandi ishobora kuganisha kumashanyarazi vuba.