Vitamin C kot inhibitor korozijskih procesov v kislem mediju

diplomsko delo visokošolskega strokovnega študijskega programa

Tanja Kondić (Author), Regina Fuchs-Godec (Mentor), Aljana Petek (Co-mentor)

Abstract

V diplomskem delu smo proučevali korozijsko obnašanje nerjavnega jekla PROKRON 1 v različnih koncentracijah HCl (c = 0,01; 0,1; 1,0 M HCl), ter ob različnih dodatkih inhibitorja (c = 0,0005; 0,001; 0,005; 0,01 M). Pri eksperimentalnem delu smo uporabili samo eno vrsto inhibitorja, in sicer vitamin C. Meritve so bile opravljene s potenciodinamsko polarizacijsko metodo, kjer smo primerjali inhibitorni učinek izbranega inhibitorja v prisotnosti različnih koncentracij vitamina C in HCl. V zaključnem delu meritev je bilo ugotovljeno, da se vitamin C obnaša z dvojnim delovanjem, saj ponekod deluje kot inhibitor, ponekod pa kot aktivator.

Keywords

korozija;inhibitorji;nerjavno jeklo;klovodikova kislina;

Data

Language:	Slovenian
Year of publishing:	2012
Source:	Maribor
Typology:	2.11 - Undergraduate Thesis
Organization:	UM FKKT - Faculty of Chemistry and Chemical Engineering
Publisher:	[T. Kondić]
UDC:	620.193.4:577.164.2(043.2)
COBISS:	16703510
Views:	1591
Downloads:	205
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Vitamin C as an inhibitor of corrosion processes in an acid medium
Secondary abstract:	In this diploma work we studied corrosion behaviour of stainless steel PROKRON 1 in different concentrations of HCl (c = 0.01, 0.1, 1.0 M HCl), and the various additives inhibitor (c = 0.0005, 0.001, 0.005, 0.01 M). In experimental work, we used only one type of inhibitor, namely vitamin C. The measurements were made with the potentiodynamic polarization method, where we compared the inhibitory effect of selected inhibitor in the presence of various concentrations of vitamin C in HCl. Results show that Vitamin-C exhibits a dual character. In some cases it acts as corrosion inhibitor and in the other as an activator of corrosion processes (especially reduction of Fe3+ to Fe2+, which causes the breakdown of the formed passive layer.
Secondary keywords:	corrosion;stainless steel;inhibitors;vitamin C;hydrochloric acid;
URN:	URN:SI:UM:
Type (COBISS):	Undergraduate thesis
Thesis comment:	Univ. v Mariboru, Fak. za kemijo in kemijsko tehnologijo
Pages:	XIII, 54 f.
Keywords (UDC):	applied sciences;medicine;technology;uporabne znanosti;medicina;tehnika;engineering;technology in general;inženirstvo;tehnologija na splošno;materials testing;commercial materials;power stations;economics of energy;preiskava materiala;blagoznanstvo;energetske centrale;energetika;mathematics;natural sciences;naravoslovne vede;matematika;biological sciences in general;biologija;material bases of life;biochemistry;molecular biology;biophysics;biokemija;molekularna biologija;biofizika;
ID:	1000864