I-Filiform corrosion ibonakala kakhulu kwi-aluminiyam

I-Filiform corrosion luhlobo olulodwa lomhlwa olubonakala kakhulu kwi-aluminiyam. Lo mcimbi ufana nembungu erhubuluzayo phantsi kwengubo, ehlala iqala ukusuka kumda osikiweyo okanye umonakalo kumqolo.

I-Filiform corrosion ikhula ngokulula xa into egqunyiweyo ibonakaliswe kwityuwa ngokudibanisa namaqondo okushisa angama-30/40 ° C kunye nokufuma okuhambelana ne-60-90%. Le ngxaki ke ngoko iphelele kwiindawo eziselunxwemeni kwaye inxulunyaniswe nendibaniselwano enelishwa yealloyi zealuminiyam kunye nonyango lwangaphambili.

Ukunciphisa i-corrosions ye-filiform kucetyiswa ukuba kuqinisekiswe i-alkaline etching efanelekileyo elandelwa yi-acidic yokuhlamba ngaphambi kokuguqulwa kwe-chrome. Ukususwa kwendawo ye-aluminium ye-2g / m2 (ubuncinci be-1.5g / m2) iyanconywa.

I-Anodizing njengonyango lwangaphambili lwe-aluminium yitekhnoloji ephuhliswe ngokukodwa ukukhusela i-filiform corrosion. Inkqubo ekhethekileyo ye-anodization iyafuneka xa ubukhulu kunye ne-porosity ye-anodization layer ibaluleke kakhulu.