Aluminium yog ib qho ntawm cov hlau siv ntau tshaj plaws hauv ntiaj teb, muaj nuj nqis rau nws lub teeb yuag, durability, thiab versatility. Tab sis ib lo lus nug tshwm sim: Puas yog txhuas xeb? Cov lus teb yog nyob rau hauv nws cov khoom tshwj xeeb tshuaj thiab kev cuam tshuam nrog ib puag ncig. Hauv tsab xov xwm no, peb yuav tshawb nrhiav aluminium qhov kev tiv thaiv corrosion, debunk myths, thiab muab kev nkag siab zoo los tswj nws txoj kev ncaj ncees.
Nkag siab txog xeb thiab Aluminium Oxidation
Xeb yog ib qho tshwj xeeb ntawm corrosion cuam tshuam rau hlau thiab hlau thaum raug oxygen thiab dej. Nws ua rau cov xim liab-xim av, flaky oxide txheej uas ua rau cov hlau tsis muaj zog. Aluminium, txawm li cas los xij, tsis xeb - nws oxidizes.
Thaum txhuas los rau hauv kev sib cuag nrog oxygen, nws tsim ib txheej nyias, tiv thaiv aluminium oxide (Al₂O₃). Tsis zoo li xeb, cov oxide txheej no yog ntom, tsis ntxeem tau, thiab nruj nreem khi rau cov hlau nto.Nws ua raws li kev thaiv, tiv thaiv ntxiv oxidation thiab corrosion. Qhov kev tiv thaiv ntuj no ua rau txhuas tiv taus xeb heev.
Vim li cas Aluminium Oxidizes txawv dua li hlau
1.Oxide Layer Structure:
·Hlau oxide (xeb) yog ntxeem tau thiab nkig, cia dej thiab oxygen nkag mus tob rau hauv cov hlau.
· Aluminium oxide yog compact thiab adherent, sealing nto.
2.Reactivity:
·Aluminium yog ntau reactive tshaj hlau tab sis tsim ib tug tiv thaiv txheej uas halts ntxiv kev tshwm sim.
·Hlau tsis muaj cov cuab yeej kho tus kheej no, ua rau muaj kev txhim kho xeb.
3.Environmental Factors:
·Aluminium resists corrosion nyob rau hauv nruab nrab thiab acidic ib puag ncig tab sis tej zaum yuav hnov mob nrog alkalis muaj zog.
Thaum Aluminium Corrode
Thaum txhuas yog corrosion-resistant, tej yam kev mob yuav cuam tshuam nws oxide txheej:
1.Humidity:
Kev raug dej ntev ntev tuaj yeem ua rau pitting lossis dawb hmoov deposits (aluminium oxide).
2.Salty Environments:
Chloride ions hauv dej ntsev nrawm oxidation, tshwj xeeb tshaj yog nyob rau hauv marine chaw.
3.Chemical Exposure:
Cov kua qaub muaj zog (piv txwv li, hydrochloric acid) lossis alkalis (piv txwv li, sodium hydroxide) hnov mob nrog txhuas.
4. Lub cev puas tsuaj:
Kos los yog abrasions tshem tawm cov oxide txheej, nthuav tawm cov hlau tshiab rau oxidation.
Common Myths About Aluminium Rust
Lus dab neeg 1:Aluminium yeej tsis xeb.
Qhov tseeb:Aluminium oxidizes tab sis tsis xeb. Oxidation yog cov txheej txheem ntuj tsim, tsis yog cov txheej txheem degradation.
Lus dab neeg 2:Aluminium tsis muaj zog tshaj hlau.
Lus dab neeg 3:Alloys tiv thaiv oxidation.
Qhov tseeb: Alloys txhim kho cov khoom zoo li lub zog tab sis tsis tshem tawm oxidation nkaus.
Kev siv tiag tiag hauv ntiaj teb ntawm Aluminium's Corrosion Resistance
·Aerospace: Lub cev dav hlau siv txhuas rau nws lub teeb yuag thiab ua haujlwm rau atmospheric corrosion.
·Kev tsim kho: Aluminium vov tsev thiab sab nrauv tiv taus huab cua hnyav.
·Automotive: Cav qhov chaw thiab thav duab tau txais txiaj ntsig los ntawm kev tiv thaiv corrosion.
·Ntim: Aluminium ntawv ci thiab cov kaus poom tiv thaiv zaub mov los ntawm oxidation.
FAQs Txog Aluminium Rust
Q1: Puas muaj txhuas xeb hauv cov dej ntsev?
A:Yog, tab sis nws oxidizes maj mam. Tsis tu ncua yaug thiab coatings yuav txo tau kev puas tsuaj.
Q2: Aluminium kav ntev npaum li cas?
A: Ntau xyoo yog tias khaws cia kom zoo, ua tsaug rau nws tus kheej-kho oxide txheej.
Q3: Puas yog aluminium xeb hauv pob zeb?
A: Alkaline pob zeb yuav hnov mob nrog txhuas, yuav tsum tau tiv thaiv txheej.
Xaus
Aluminium tsis xeb, tab sis nws oxidizes tsim ib txheej tiv thaiv. Nkag siab txog nws tus cwj pwm thiab kev tiv thaiv kev tiv thaiv kom nws lub neej nyob ntev hauv ntau yam kev siv. Txawm hais tias siv rau kev lag luam lossis cov khoom siv hauv tsev, aluminium qhov kev tiv thaiv corrosion ua rau nws muaj kev ntseeg siab.
Lub sij hawm xa tuaj: Mar-12-2025
