The protective effect of magnetic fields on the corrosion of aluminium alloys in hydrochloric acid solutions

Igweze Daniel Chukwuebuka; Obi Jasper Tamadu

doi:10.5937/zasmat2203271M

Autori

Igweze Daniel Chukwuebuka Federal University of Technology, Department of Physics, Materials Research Group, Owerri, Owerri, Nigeria Autor
Obi Jasper Tamadu Federal University of Technology, Department of Physics, Materials Research Group, Owerri, Owerri, Nigeria + Isaac Jasper Boro College of Education, Department of Physics, Sagbama, Yenagoa, Nigeria Autor

DOI:

https://doi.org/10.5937/zasmat2203271M

Ključne reči:

Magnetno polje, legure aluminijuma, gravimetrijska tehnika, brzina korozije, efikasnost zaštite, poprečna magnetootpornost

Apstrakt

Gravimetrijskom tehnikom ispitan je uticaj primenjenih magnetnih polja na koroziju legura aluminijuma AA3003 i AA8011 u rastvorima hlorovodonične kiseline na sobnoj temperaturi. Magnetno polje je generisano od lokalno napravljenog elektromagneta sa promenljivim izlazima. Naneti su pod pravim uglom na površine uzoraka legure aluminijuma kada su potpuno uronjeni u ispitne rastvore. Pra ene su brzine korozije legura aluminijuma AA3003 i AA8011 u 0,5M rastvorima HCl kiselina pri različitim primenjenim magnetnim poljima. Rezultati pokazuju da se brzine korozije ispitivanih uzoraka legure aluminijuma smanjuju sa povećanjem primenjenog magnetnog polja. Ovo implicira da prisustvo magnetnog polja inhibira koroziju uzoraka legure aluminijuma AA3003 i AA8011. Sa primenjenim magnetnim poljima u opsegu od 254,3 - 1040,6 mG [0,0254 - 0,1041 mT , zaštitna efikasnost magnetnog polja primećena za AA3003 u 0,5M rastvorima HCl kiseline kre e se od 1 ,3 - 4,1 dok je za identičan rastvor aluminijuma AA80 allo1 test , efikasnost zaštite se kre e od 11,5 - 78,0%. Mehanizam zaštite se delom pripisuje fenomenu poprečne magnetootpornosti, a delom uticaju magnetnih polja na obrazac transporta mase konstitutivnih jona u elektrohemijskom sistemu.

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