1. The 6061 aluminum plate will form a passive protective film in the oxidizing acid liquid and is not easy to corrode. However, in the non-acidic acid (such as hydrochloric acid) liquid, the passive oxide film will be dissolved and the corrosion will be accelerated. In alkaline solutions with a pH value >8.5, qhov corrosion ntawm aluminium kuj yuav nrawm.
2. Hauv cov dej uas muaj Cl-, cov yeeb yaj kiab tiv thaiv passivation yuav ua rau muaj qhov tsis xws luag thiab pitting corrosion, tshwj xeeb tshaj yog thaum Cu2+ thiab Fe3+ coexist, nws yuav muaj kev phom sij ntau dua, yog li nws tsis tuaj yeem siv rau hauv cov dej uas muaj taug qab cov hlau hnyav ions thiab dej ua haujlwm.
3. Yog vim li cas rau qhov kev hloov dub ntawm qhov saum npoo ntawm 6061 txhuas phaj: vim yog cov hlau tsis sib xws ntawm precipitated zoo sib xws nrog rau saum npoo thiab nws tus kheej raug, uas txo cov reflectivity ntawm aluminium nto; cov xim qub ntawm cov hlau precipitated txuas rau saum npoo thiab cov hlau raug hloov pauv mus rau cov xim oxides thiab hydroxides. Aluminium nto tau yooj yim tig dub nyob rau hauv ib qho chaw ntub thiab oily.
4. Aluminium thiab aluminium alloys yog nyob rau hauv lub sij hawm ntev kev sib cuag nrog cov ntaub ntawv sib txawv ntawm cov hlau, uas tuaj yeem yooj yim ua rau kev tiv thaiv corrosion: piv nrog cov muaj peev xwm loj (-0.20V) thiab hlau (-0.58) , tsis tshua muaj peev xwm txhuas (-0.85V) thiab cov khoom siv hlau muaj peev xwm yog tias muab tso rau hauv cov tshuaj electrolytic hauv cov khoom siv hluav taws xob, roj teeb corrosion yuav tshwm sim.
