Nkhani

Kodi aluminiyamu imatulutsa okosijeni ndikuwononga nthawi yayitali bwanji mukaigwiritsa ntchito?
Chigawo chachikulu cha aluminiyumu ndi aluminiyumu ndi kagawo kakang'ono ka aloyi. Anthu ena amaganiza kuti aluminiyamu sikophweka kuti oxidize chifukwa pakhala kusintha pang'ono mtundu. Ndipotu, aluminiyamu ndichitsulo chogwira ntchito kwambiri, chosavuta kutulutsa oxidize kuposa chitsulo. Chifukwa chomwe sichikuwoneka ndi chifukwa chakuti aluminium oxide yomwe imapangidwa pambuyo pa okosijeni imakhala yopanda mtundu komanso yowonekera. Ndipo wosanjikiza filimu okusayidi amalekanitsa zotayidwa mkati ndi kukhudzana mpweya, kotero izo sizidzapitiriza oxidize, motero kuteteza zotayidwa gawo lapansi. Chifukwa chake aluminiyumu imakhala yolimba ngakhale popanda chithandizo chapamwamba.
Koma filimu ya okusayidi si invulnerable, zotayidwa okusayidi yogwira kwa asidi ndi zamchere, mu chilengedwe ndi mpweya zikuwononga, filimu okusayidi mosavuta kuwonongedwa, chifukwa dzimbiri za zotayidwa gawo lapansi, kuwonongeka. Ngati atagwiritsidwa ntchito panja, kutenthedwa ndi dzuwa, ndi madzi amvula a acidic zimathandizira kuti aluminiyamu iwonongeke. Ndiye kutalika kwake kwa aluminiyumu kudzakhala oxidize ndi corrode ikagwiritsidwa ntchito zimatengeranso chilengedwe ndi chithandizo chake chapamwamba. The pamwamba mankhwala a aluminiyamu mbiri zikuphatikizapo anodic makutidwe ndi okosijeni, electrophoresis, kupopera mbewu mankhwalawa, electroplating, etc. Anodic makutidwe ndi okosijeni ndi electrochemical njira kuti kupanga yokumba okusayidi filimu pamwamba pa mbiri zotayidwa, amene ndi wokhuthala kwambiri kuposa mwachibadwa anapanga okusayidi filimu ndi kugonjetsedwa ndi dzimbiri ngakhale m'madera ankhanza panja utumiki zaka 25, ndipo angafikire moyo utumiki conservative.