Aluminium yog qhov thib ob loj tshaj plaws hlau nyob hauv lub ntiaj teb, thiab vim nws cov khoom zoo heev, nws yog ib qho ntawm cov hlau siv dav tshaj plaws niaj hnub no. Yog li ntawd, nws yog qhov tseem ceeb kom nkag siab txog cov xwm txheej uas ua rau lub neej luv luv ntawm cov hlau no.

Kev xeb ntawm ib qho hlau yuav cuam tshuam rau nws lub zog ua haujlwm, thiab nyob rau hauv qhov xwm txheej hnyav yuav ua rau muaj kev puas tsuaj ntawm cov txheej txheem, xws li cov kab nrib pleb, kev puas tsuaj ib nrab thiab ua tiav cov khoom tsis ua haujlwm.

Aluminium corrosion yog dab tsi? Aluminium corrosion yog hais txog qhov maj mam decomposition ntawm txhuas molecules rau hauv oxides, yog li txo nws lub cev thiab tshuaj. Nyob rau hauv qhov tseeb, txhuas yog ib tug active hlau, tab sis nws kuj yog ib tug passive hlau.

Hom ntawm aluminium corrosion
Atmospheric corrosion
Feem ntau hom ntawm aluminium corrosion. Kev cuam tshuam ntawm aluminium rau cov ntsiab lus ntuj tuaj yeem ua rau atmospheric corrosion. Txij li thaum nws tuaj yeem tshwm sim nyob rau ntau qhov chaw, atmospheric corrosion yog qhov loj tshaj plaws ntawm tag nrho cov kev puas tsuaj rau txhuas los ntawm txhua hom kev xeb hauv ntiaj teb.

Hluav taws xob corrosion
Galvanic corrosion, tseem hu ua dissimilar hlau corrosion, cuam tshuam rau txhuas lub cev los yog los ntawm electrolytes txuas nrog cov hlau muaj txiaj ntsig. Cov hlau noble tej zaum yuav yog cov hlau uas muaj qhov ua haujlwm qis dua li txhuas.

Pitting
Pitting corrosion yog nto corrosion tshwm sim ntawm txhuas hlau, uas yog yus muaj los ntawm me me qhov (qhov) ntawm qhov chaw. Feem ntau, cov dimples tsis cuam tshuam rau lub zog ntawm cov khoom. Hloov chaw, qhov no yog qhov teeb meem zoo nkauj, tab sis yog tias qhov pom ntawm qhov chaw tseem ceeb, nws tuaj yeem ua rau tsis ua haujlwm.

Kev txhim kho corrosion
Crevice corrosion yog ib qho ntawm cov txheej txheem kev txhim kho hauv zos hauv cov ntaub ntawv. Cov ntaub ntawv sib tshooj lossis kev tsim teeb meem yuam kev tuaj yeem ua rau muaj qhov khoob. Yog li ntawd, kev sau cov dej hiav txwv hauv cov hnab no tuaj yeem ua rau crevice corrosion.

Exfoliation corrosion kuj
Exfoliation corrosion yog ib yam tshwj xeeb ntawm intergranular corrosion nyob rau hauv aluminium alloys, nrog pom tseeb kev taw qhia qauv. Qhov no tshwj xeeb tshaj yog pom tseeb hauv cov khoom siv txhuas uas tau dhau los ua kub dov lossis txias dov.