Tikamaganizira mawu “dzimbiri,” Chithunzi choyamba chomwe chimabwera m'maganizo nthawi zambiri ndi zokutira zofiirira zofiirira zomwe zimapangika pachitsulo kapena chitsulo chikakhala ndi mpweya wonyowa., chodabwitsa mwasayansi chomwe chimadziwika kuti iron oxide.The Chemical reaction imatha kuyimiridwa motere:

4𝐹𝑒+3𝑂2+6𝐻2𝑂→4𝐹𝑒(𝑂𝐻)3pa

Izi zimabweretsa kupanga hydrated iron(III) oxide, chomwe chimadziwika kuti dzimbiri.

Komabe, zikafika ku aluminiyamu, funso limabuka: Amachita dzimbiri? Kuti tiyankhe izi, tiyenera kufufuza kuti dzimbiri ndi chiyani, momwe zimakhudzira zitsulo zosiyanasiyana, ndipo makamaka, momwe aluminiyamu amachitira mumikhalidwe yofanana.

Kodi Dzimbiri ndi chiyani?

Dzimbiri ndi mtundu wa dzimbiri womwe umachitika ndi chitsulo ndi chitsulo pamene zikumana ndi mpweya ndi chinyezi. Chemical reaction imabweretsa iron oxide. Chinthu chapadera cha dzimbiri si mtundu wake wokha komanso momwe chimachititsa kuti chitsulocho chiwonjezeke ndi kuphulika., zomwe pamapeto pake zimatha kusokoneza kukhulupirika kwachitsulo.

Aluminium ndi Corrosion

Aluminiyamu, mosiyana ndi chitsulo, sichichita dzimbiri. Izi zili choncho chifukwa aluminiyumu alibe chitsulo, ndi chifukwa chake, mankhwala enieni omwe amapanga iron oxide (dzimbiri) sizingachitike. Komabe, izi sizikutanthauza kuti aluminiyamu imatetezedwa ku mitundu yonse ya dzimbiri. M’malo mochita dzimbiri, zitsulo zotayidwa zimadutsa njira yotchedwa oxidation.The chemical reaction for mapangidwe a aluminium oxide ndi motere.:

4𝐴𝑙+3𝑂2→2𝐴𝑙2𝑂3pa

Izi zimangochitika zokha komanso zimangotulutsa mpweya, kutanthauza kuti imatulutsa kutentha. Chosanjikiza cha aluminium oxide ndi cholimba kwambiri ndipo chimapereka chitetezo chabwino kwambiri kuti chisawonongeke.

Njira ya Oxidation mu Aluminium

Pamene aluminiyumu imawonekera mumlengalenga, imachita ndi mpweya kupanga aluminium oxide pamwamba pake. Wosanjikiza wa aluminium oxide uyu ndi wosiyana kwambiri ndi dzimbiri m'njira zingapo zofunika:

1. Mtundu ndi Kapangidwe: Aluminium oxide si yosalala kapena yofiira ngati iron oxide. M'malo mwake, zimapanga zoyera kapena zomveka, chitetezo chosanjikiza chomwe sichimawonekera.
2. Chitetezo Chotchinga: Mosiyana ndi iron oxide, zomwe zimawonongeka ndikuwononga zitsulo, aluminium oxide imatetezadi zitsulo zomwe zili pansi kuti zisawonongeke. Chosanjikizachi chimapangika mwachangu pomwe aluminiyamu yatsopano ikakhala ndi mpweya ndipo imalimbana ndi dzimbiri.

Chifukwa chiyani Aluminiyamu Amasankhidwa Kuti Agwiritse Ntchito Panja

Zomwe zidapangidwa ndi aluminiyumu zimapangitsa kukhala chisankho chabwino kwambiri pazogwiritsa ntchito panja. Nazi zifukwa zingapo:

• Kukhalitsa: Chifukwa cha chitetezo cha oxide wosanjikiza, aluminiyamu imagonjetsedwa kwambiri ndi kuwonongeka kwa nyengo, makamaka m'malo omwe angafulumizitse dzimbiri lachitsulo.
• Wopepuka: Aluminiyamu ndi yopepuka kwambiri poyerekeza ndi zitsulo zina, kupanga chisankho choyenera kwa ntchito zomwe kulemera ndi chinthu, monga mu ndege, kupanga magalimoto, ndi zonyamula katundu.
• Zopanda Poizoni ndi Zobwezerezedwanso: Aluminiyamu ndi yopanda poizoni ndipo imatha kubwezeretsedwanso, zomwe zimathandizira kutchuka kwake pakuyika chakudya ndi kumanga.

Zinthu Zomwe Zimakhudza Kuwonongeka kwa Aluminium

Pomwe aluminiyumu imalimbana ndi dzimbiri, zinthu zina zimatha kufulumizitsa ndondomekoyi kapena kuyambitsa mitundu ina ya dzimbiri:

• Galvanic Corrosion: Izi zimachitika pamene aluminiyumu ikukhudzana ndi chitsulo cholemekezeka kwambiri pamaso pa electrolyte, kupangitsa kuti dzimbiri ziwonjezeke.
• Zinthu Zachilengedwe: Kukumana ndi zowononga mafakitale, malo amchere (monga zigawo za m'mphepete mwa nyanja), ndi pH yowonjezereka imatha kukulitsa dzimbiri.

Aluminium vs. Zitsulo Zina: Kukaniza kwa Corrosion

Kuyerekeza kukana kwa dzimbiri kwa aluminiyamu ndi zitsulo zina kumathandiza kuwonetsa zabwino ndi zolephera zake.

Table : Kukaniza kwa Corrosion of Common Metals