Uma sicabanga ngegama “ukugqwala,” isithombe sokuqala esivame ukufika emqondweni inamathela ngokubomvu ngokunsundu entekenteke elakheka ensimbi noma ensimbi lapho evezwe emoyeni oswakeme., into eyaziwa ngokwesayensi ngokuthi i-iron oxide.Ukusabela kwamakhemikhali kungamelwa kanje:

4𝐹𝑒+3𝑂2+6𝐻2𝑂→4𝐹𝑒(𝑂𝐻)3.

Lokhu kusabela kuholela ekwakhekeni kwensimbi enamanzi(III) i-oxide, eyaziwa ngokuthi ukugqwala.

Nokho, uma kukhulunywa nge-aluminium, umbuzo uphakama: Iyagqwala i-aluminium? Ukuphendula lokhu, kudingeka sihlole ukuthi ukugqwala kuyini ngempela, ukuthi kuthinta kanjani izinsimbi ezahlukene, futhi ngokuqondile, ukuthi i-aluminium isabela kanjani ngaphansi kwezimo ezifanayo.

Yini Ukugqwala?

Ukugqwala kuwuhlobo oluthile lokugqwala olwenzeka nge-iron nensimbi lapho echayeke kumoya-mpilo kanye nomswakama. Ukusabela kwamakhemikhali kubangela i-iron oxide. Isici esiphawulekayo sokugqwala akuwona nje umbala wako kuphela kodwa nendlela eyenza insimbi yande futhi ihlakazeke., okungagcina kuphazamise ubuqotho besakhiwo sensimbi.

I-Aluminium kanye Nokugqwala

I-Aluminium, ngokungafani nensimbi, ayigqwali. Lokhu kungenxa yokuthi i-aluminium ayinayo insimbi, futhi ngalokho, ukusabela kwamakhemikhali okuthile okudala i-iron oxide (ukugqwala) ngeke kwenzeke. Nokho, lokhu akusho ukuthi i-aluminium ayinazo zonke izinhlobo zokugqwala. Esikhundleni sokugqwala, i-aluminiyamu ingena kwinqubo ebizwa ngokuthi i-oxidation.I-chemical reaction for ukwakheka kwe-aluminium oxide imi kanje:

4𝐴𝑙+3𝑂2→2𝐴𝑙2𝑂3.

Lokhu kusabela kuyazenzekela futhi kuyingozi kakhulu, okusho ukuthi ikhulula ukushisa. Isendlalelo se-aluminium oxide siqinile kakhulu futhi sinikeza isivikelo esihle kakhulu ekuqhubekeni nokugqwala.

Inqubo Ye-Oxidation ku-Aluminium

Lapho i-aluminium ivezwa emkhathini, ihlangana nomoya-mpilo ukwenza i-aluminium oxide ebusweni bayo. Lolu ungqimba lwe-aluminium oxide luhluke kakhulu ekugqwaleni ngezindlela ezimbalwa ezibalulekile:

1. Umbala Nokwakheka: I-Aluminium oxide ayinawo amatshe noma ibomvu njenge-iron oxide. Kunalokho, kwakha okumhlophe noma okucacile, ungqimba oluvikelayo oluvame ukungabonakali.
2. Isithiyo Esivikelayo: Ngokungafani ne-iron oxide, okonakala futhi kulimaze insimbi, i-aluminium oxide empeleni ivikela insimbi engaphansi ukuthi ingagqwali. Lesi sendlalelo sakheka ngokushesha lapho i-aluminium entsha ichayeke emoyeni futhi imelana ngokuphawulekayo nokugqwala okuqhubekayo.

Kungani I-Aluminium Ikhethelwa Izicelo Zangaphandle

Izici zemvelo ze-aluminium zikwenza kube ukukhetha okuhle kakhulu kwezicelo zangaphandle. Nazi izizathu ezimbalwa zokuthi kungani:

• Ukuqina: Ngenxa yongqimba oluvikelayo lwe-oxide, i-aluminium imelana kakhulu nokuwohloka okuhlobene nesimo sezulu, ikakhulukazi ezindaweni ezivame ukusheshisa ukugqwala kwensimbi.
• Engasindi: I-aluminium ilula kakhulu uma iqhathaniswa nezinye izinsimbi, okwenza kube ukukhetha ekahle izicelo lapho isisindo isici, njengasendizeni, ukwakhiwa kwezimoto, kanye nezakhiwo eziphathekayo.
• Ayinabuthi futhi Iyasebenziseka Kabusha: I-Aluminium ayinabo ubuthi futhi igaywa kabusha kakhulu, okunomthelela ekudumeni kwayo ekufakweni kokudla kanye nokwakhiwa.

Izinto Ezithinta Ukugqwala Kwe-Aluminium

Ngenkathi i-aluminium imelana nokugqwala, izimo ezithile zingasheshisa inqubo noma ziholele kwezinye izinhlobo zokugqwala:

• I-Galvanic Corrosion: Lokhu kwenzeka lapho i-aluminium ithintana nensimbi ehlonipheke kakhulu phambi kwe-electrolyte, okuholela ekwandeni kokugqwala.
• Izici Zemvelo: Ukuchayeka ezintweni ezingcolisayo zezimboni, izindawo ezinosawoti (njengezifunda ezisogwini), kanye nezimo ze-pH ezeqisayo zingathuthukisa ukugqwala.

I-Aluminium vs. Ezinye Izinsimbi: Ukumelana Nokugqwala

Ukuqhathanisa ukumelana nokugqwala kwe-aluminium nezinye izinsimbi kusiza ukukhombisa izinzuzo nemikhawulo yayo.

Ithebula : Ukumelana Nokugqwala Kwezinsimbi Ezivamile