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Saense e tsebahalang: Na Aluminium Rust?

Ha re nahana ka lentsoe “mafome,” setšoantšo sa pele seo hangata se tlang kelellong ke lesela le bosootho bo bofubelu le bosootho le bopehileng holim'a tšepe kapa tšepe ha le le moeeng o mongobo., ketsahalo e tsejoang ka mahlale e le iron oxide.Tsela ea lik'hemik'hale e ka emeloa ka tsela e latelang:

4𝐹𝑒+3𝑂2+6𝐻2𝑂→4𝐹𝑒(𝑂𝐻)3

Karabelo ena e lebisa ho thehoeng ha tšepe ea hydrated(III) oxide, eo hangata e tsejoang ka hore ke mafome.

Leha ho le joalo, ha ho tluoa tabeng ea aluminium, potso ea hlaha: E etsa mafome a aluminium? Ho araba sena, re lokela ho nyakurela hore na ha e le hantle mafome ke eng, kamoo e amang ditshepe tse fapaneng, le ka ho toba, hore na aluminium e sebetsa joang tlas'a maemo a tšoanang.

Rust ke eng?

Mafome ke mofuta o itseng oa kutu o hlahang ka tšepe le tšepe ha li pepesehetse oksijene le mongobo. Karabelo ea lik'hemik'hale e fella ka iron oxide. Tšobotsi e ikhethang ea mafome ha se 'mala oa eona feela empa hape le tsela eo e etsang hore tšepe e atolohe 'me e phahlohe., seo qetellong se ka senyang botsitso ba sebopeho sa tšepe.

Aluminium le Corrosion

Aluminium, ho fapana le tshepe, ha e ruse. Sena ke hobane aluminium ha e na tšepe, ka hona, karabelo e khethehileng ea lik'hemik'hale e hlahisang oxide ea tšepe (mafome) e ka se etsahale. Leha ho le joalo, sena ha se bolele hore aluminium ha e na mefuta eohle ea ho bola. Ho e-na le mafome, aluminium undergoes a process called oxidation.The chemical reaction for the formation of aluminum oxide is as follows:

4𝐴𝑙+3𝑂2→2𝐴𝑙2𝑂3

Boitšoaro bona bo iketsahalla feela tjee, 'me bo tsoa mochesong, ho bolelang hore e ntsha mocheso. Lera la aluminium oxide le thata haholo 'me le fana ka tšireletso e babatsehang khahlanong le ho senya ho eketsehileng.

Mokhoa oa Oxidation ka Aluminium

Ha aluminium e pepesehetse sepakapaka, e kopana le oksijene ho etsa aluminium oxide holim'a eona. Lera lena la aluminium oxide le fapane haholo le mafome ka litsela tse 'maloa tsa bohlokoa:

  1. Mmala le Sebopeho: Aluminium oxide ha e boreleli kapa e khubelu joalo ka tšepe ea tšepe. Ho e-na le hoo, e bopa bosweu kapa bo hlakileng, lera le tshireletsang leo ka kakaretso le sa bonahaleng.
  2. Tšireletso ea Tšireletso: Ho fapana le iron oxide, e senyehang le ho senya tshepe, aluminium oxide ha e le hantle e sireletsa tšepe e ka tlaase ho senya ho eketsehileng. Lera lena le hlaha ka potlako ha aluminiamo e ncha e pepesehile moeeng 'me e khona ho mamella ho bola ho hoholo.

6061 aluminium

Hobaneng ha Aluminium e Khetheloa Likopo tsa Kantle

Thepa ea tlhaho ea aluminium e etsa hore e be khetho e ntle bakeng sa lits'ebetso tsa kantle. Mabaka a seng makae a lebaka ke ana:

  • Ho tšoarella: Ka lebaka la lera la eona le sireletsang oxide, aluminium e hanyetsana haholo le ho senyeha ho amanang le boemo ba leholimo, haholo-holo libakeng tse ka potlakisang mafome a tšepe.
  • E bobebe: Aluminium e bobebe haholo ha e bapisoa le litšepe tse ling, ho etsa khetho e nepahetseng bakeng sa lits'ebetso moo boima bo leng teng, joalo ka sefofaneng, kaho ea likoloi, le meaho e nkehang.
  • Ha e na Chefo ebile e ka sebelisoa hape: Aluminium is non-toxic and highly recyclable, e kenyang letsoho ho tumang ha yona ka ho paka dijo le kaho.

Lintlha tse Amang ho Corrosion ea Aluminium

Ha aluminium e hanyetsa ho bola, maemo a itseng a ka potlakisa tshebetso kapa a lebisa mefuteng e meng ya kutu:

  • Galvanic Corrosion: Sena se etsahala ha aluminium e kopana le tšepe e ntle haholo ka pel'a electrolyte, se lebisang ho holeng ho hoholo.
  • Lintlha tsa Tikoloho: Ho pepesehela litšila tsa indasteri, libaka tsa letsoai (joalo ka libaka tse lebopong la leoatle), mme maemo a pH a feteletseng a ka matlafatsa kutu.

Aluminium vs. Litšepe Tse Ling: Khanyetso ea Corrosion

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

Tafole : Corrosion Resistance of Common Metals

Tšepe Mofuta oa Corrosion Khanyetso ea Corrosion Mehato ea Thibelo
Aluminium Oxidation (e se nang mafome) Phahameng Anodizing, sa phekoloe
Tšepe Ho rusa Tlase Ho penta, galvanizing
Koporo Patina (lera le letala) E itekanetseng Hangata e tloheloa hore e kokobele
Zinki Mafome a masoeu E itekanetseng Ho galaletsa
Tšepe Mafome E fapana ho ea ka mofuta Ts'epe e sa beng le mabali, likoahelo

Arolelana
2024-04-26 07:02:38
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