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Title:Sinergistični inhibicijski učinek Na-soli na kinetiko korozije nerjavnega jekla "1.4057" v raztopini H2SO4
Authors:ID Zafošnik, Natalija (Author)
ID Goršek, Andreja (Mentor) More about this mentor... New window
ID Pečar, Darja (Comentor)
Files:.pdf UNI_Zafosnik_Natalija_2010.pdf (2,05 MB)
MD5: 4DA9E40B51D4CC19B24EBCBA09871722
PID: 20.500.12556/dkum/124bdf10-3283-4492-8a76-33ade3e5590a
 
Language:Slovenian
Work type:Undergraduate thesis
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:Proučevali smo vpliv dveh pogosto uporabljenih inhibitorjev, natrijevega nitrita in natrijevega fosfata, na nerjavno jeklo »1.4057« v raztopini H2SO4 s koncentracijo, c = 0,075 mol/L. Testiranja smo izvajali pri različnih temperaturah in različnih koncentracijah inhibitorjev. Iz podatkov o izgubi mase smo določili hitrost korozije, učinkovitost inhibitorjev, adsorpcijske izoterme in aktivacijsko energijo korozijskih procesov. Ugotovili smo, da hitrost korozije z višanjem koncentracije inhibitorjev pada, z dvigom temperature narašča in da učinkovitost posameznih inhibitorjev narašča tako z dvigom njihove koncentracije, kakor tudi temperature medija.
Keywords:korozija, inhibitorji, gravimetrična metoda, hitrost korozije, učinkovitost inhibitorjev, adsorpcijske izoterme, aktivacijska energija
Place of publishing:Maribor
Publisher:[N. Zafošnik]
Year of publishing:2010
PID:20.500.12556/DKUM-16080 New window
UDC:541.183(043.2)
COBISS.SI-ID:14995222 New window
NUK URN:URN:SI:UM:DK:LIPVOQZ4
Publication date in DKUM:04.10.2010
Views:2787
Downloads:166
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FKKT
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Secondary language

Language:English
Title:Synergistic inhibition effect of sodium salts on the kinetics of corrosion of “1.4057” stainless steel in the H2SO4 solution
Abstract:We have studied the impact of two commonly used inhibitors, sodium nitrite and sodium phosphate, in stainless steel »1.4057« in the H2SO4 solution with concentration, c = 0.075 mol/L. Tests were performed at different temperatures and different concentrations of inhibitors. From determined weight loss, corrosion rate, inhibition efficiency, adsorption isotherms and activation energy were determined. We found that the corrosion rate decreases by increasing the inhibitor concentration, increases with temperature rise and that the efficiency of individual inhibitors increases with increase of their concentration, as well as the temperature of the medium.
Keywords:corrosion, inhibitors, gravimetric method, corrosion rate, .inhibition efficiency, adsorption isitherms, activation energy


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