Sprečavanje korozije ploča od mekog čelika potopljenih u morsku vodu ekstraktom ulja nekih prirodnih proizvoda
DOI:
https://doi.org/10.5937/zasmat2201023RApstrakt
Ploče trupa broda od mekog čelika (MČ) su uvek u kontaktu sa morskom vodom i uvek su u kontaktu sa agresivnim jonima, kao što su hlorični joni prisutni u morskoj vodi. Otpornost na koroziju ploča trupa broda od mekog čelika je istražen proučavanjem polarizacije. Ekstrakt ulja sandalovine, koji sadrži po 5 g kardamoma, karanfilića, muskatnog oraščića, Indija Sambrani (loban), Chrysopogon zizanioides, poznatijeg kao vetiver i kamfor, korišen je kao inhibitor korozije zajedno sa trinatrijum citratom, natrijum dihidrogenom fosfat i Zn2+. Otpornost na koroziju je merena u odsustvu i prisustvu različitih inhibitornih sistema: Trinatrijum citrat (TSC) 100 ppm+ Zn2+ 50 ppm sistem, natrijum dihidrogen fosfat (SDP) 100 ppm+ Zn2+ 50 ppm sistem, obložen uljem (3 dana) MČ, uljem premazan (3 dana) MČ +TSC 100 ppm+ sistem obložen ZN2+ 5 ppm+ sistem MS +SDP100 ppm+ Zn2+ 50 ppm. Primećeno je da kada je meki čelik uronjen u sistem SV+TSC 100 ppm + Zn2+ 50ppm, otpornost MČ na koroziju se povećava. Kada je meki čelik uronjen u sistem SV+ SDP 100 ppm + Zn2+ 50 ppm, otpornost MČ na koroziju se povećava Kada se meki čelik uroni u MS obložen uljem (3 ana) u sistem morske vode, otpornost MČ na koroziju se povećava. Kada se meki čelik uroni u MS obložen uljem (3 dana) u sistem SV+TSC 100 ppm + Zn2+ 50ppm, otpornost MČ na koroziju se povećava. Kada se meki čelik uroni u MS obložen uljem (3 dana) u sistem SV+ SDP 100 ppm + Zn2+ 50 ppm, otpornost MČ na koroziju se povećava. Ovo se ojjašnjava činjenicom da dolazi do povećanja vrednosti LPR i smanjenja vrednosti struje korozije. Potencijal korozije se pomera na anodnu stranu. Ovo ukazuje da se u ovom sistemu inhibitora pretežno kontroliše anodna reakcija rastvaranja metala. Ovo implicira da se ovi sistemi inhibitora mogu obložiti na površinu od mekog čelika koji se koristi kao ploče trupa da bi se sprečila korozi a mekog čelika u morskoj vodi.Ključne reči:
inhibicija korozije, ploče trupa, meki čelik, morska voda, zeleni inhibitori, elektrohemijska studijaReference
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