Mgbe anyị na-eche banyere okwu “nchara,” ihe oyiyi mbụ na-abatakarị n'uche bụ mkpuchi na-acha uhie uhie na-acha aja aja nke na-etolite na ígwè ma ọ bụ nchara mgbe ikuku na-ekpuchi mmiri., ihe omuma nke sayensi mara dika iron oxide. Enwere ike igosiputa mmeghachi omume kemịkalụ dị ka ndị a:

4𝐹𝑒+3𝑂2+6𝐻2𝑂→4𝐹𝑒(𝑂𝐻)3;

Mmeghachi omume a na-eduga n'ịmepụta ígwè hydrated(III) oxide, nke a na-akpọkarị nchara.

Agbanyeghị, mgbe ọ na-abịa aluminum, ajụjụ na-ebilite: Na-eme nchara aluminum? Iji zaa nke a, anyị kwesịrị ileba anya n'ihe nchara bụ n'ezie, otú o si emetụta ọla dị iche iche, na kpọmkwem, otú aluminum si eme n'okpuru yiri ọnọdụ.

Gịnị bụ nchara?

Nchara bụ kpọmkwem ụdị corrosion na-eme na ígwè na ígwè mgbe ha na-ekpuchi ikuku oxygen na mmiri. Mmeghachi omume kemịkalụ na-ebute iron oxide. Ihe pụrụ iche nke nchara abụghị nanị ụcha ya kamakwa otú o si eme ka ígwè ahụ gbasaa ma gbapụsịa, nke nwere ike mechaa mebie iguzosi ike n'ezi ihe nke igwe.

Aluminom na corrosion

Aluminom, n'adịghị ka ígwè, adịghị nchara. Nke a bụ n'ihi na aluminom enweghị ígwè, ya mere, mmeghachi omume kemịkalụ kpọmkwem nke na-emepụta ígwè oxide (nchara) enweghị ike ime. Agbanyeghị, nke a apụtaghị na aluminom anaghị egbochi ụdị corrosion ọ bụla. Kama nchara, aluminom undergoes a process called oxidation.The chemical reaction for the formation of aluminum oxide is as follows:

4𝐴𝑙+3𝑂2→2𝐴𝑙2𝑂3;

Mmeghachi omume a bụ nke a na-atụghị anya ya na exothermic, nke pụtara na ọ na-ahapụ okpomọkụ. Igwe oyibo oxide aluminom siri ike ma na-enye nchebe dị mma megide mmebi ọzọ.

Usoro nke Oxidation na Aluminom

Mgbe aluminom na-ekpughere ikuku, ọ na-emeghachi omume na oxygen na-emepụta aluminum oxide n'elu ya. Nke a aluminum oxide oyi akwa dị nnọọ iche na nchara n'ọtụtụ isi ụzọ:

1. Agba na Texture: Aluminom oxide adịghị agba agba ma ọ bụ ọbara ọbara dị ka ígwè oxide. Kama, ọ na-etolite ọcha ma ọ bụ doo anya, oyi akwa mkpuchi nke na-adịghị ahụkebe.
2. Ihe mgbochi nchebe: N'adịghị ka ígwè oxide, nke na-emebi ma na-emebi ígwè, Aluminom oxide na-echebe n'ezie metal dị n'okpuru site na mmebi ọzọ. Igwe oyi akwa a na-etolite ngwa ngwa mgbe aluminom dị ọhụrụ na-ekpuchi ikuku ma na-eguzogide n'ụzọ dị ịrịba ama maka mmebi ọzọ.

Ihe kpatara eji ahọrọ Aluminom maka ngwa n'èzí

Ihe ndị dị n'ime ya nke aluminom na-eme ka ọ bụrụ nhọrọ magburu onwe ya maka ngwa n'èzí. Nke a bụ ihe ole na ole kpatara ya:

• Ịdị ogologo: N'ihi oyi akwa oxide ya na-echebe ya, aluminom na-eguzogide nbibi metụtara ihu igwe, karịsịa na gburugburu ebe ga-eme ka nchara ígwè dị ngwa ngwa.
• Dị fechaa: Aluminom dị oke ọkụ ma e jiri ya tụnyere ọla ndị ọzọ, na-eme ka ọ bụrụ ezigbo nhọrọ maka ngwa ebe ibu bụ ihe kpatara ya, dị ka ụgbọ elu, owuwu ụgbọ ala, na obere ihe owuwu.
• Nke na-adịghị egbu egbu na nke enwere ike imegharị ya: Aluminom is non-toxic and highly recyclable, nke na-enye aka na-ewu ewu na nkwakọ nri na ihe owuwu.

Ihe ndị na-emetụta Aluminom Corrosion

Ọ bụ ezie na aluminom na-eguzogide corrosion, ụfọdụ ọnọdụ nwere ike mee ka usoro ahụ dịkwuo ngwa ma ọ bụ mee ka ọ bụrụ ụdị corrosion ndị ọzọ:

• Galvanic corrosion: Nke a na-eme mgbe aluminom na-ejikọta ya na metal dị mma karịa n'ihu nke electrolyte, na-eduga n'ịba ụba corrosion.
• Ihe na-akpata gburugburu ebe obibi: Ngosipụta na mmetọ ụlọ ọrụ, gburugburu saline (dị ka mpaghara osimiri), na oke pH ọnọdụ nwere ike ịkwalite corrosion.

Aluminom vs. Ọla ndị ọzọ: Nguzogide corrosion

Comparing the corrosion resistance of aluminom to other metals helps illustrate its advantages and limitations.

Tebụl : Nguzogide corrosion nke ọla ndị nkịtị