20.500.12556/DKUM-38715 VITAMIN C KOT INHIBITOR KOROZIJSKIH PROCESOV V KISLEM MEDIJU VITAMIN C AS AN INHIBITOR OF CORROSION PROCESSES IN AN ACID MEDIUM 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. 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. nerjavno jeklo korozija inhibitor vitamin C klorovodikova kislina stainless steel corrosion inhibitor vitamin C hydrochloric acid true true false [T. Kondić] Slovenski jezik Angleški jezik Diplomsko delo 2012-10-11 19:05:41 2012-10-16 14:35:15 2022-05-04 13:35:28 2021-04-20 03:16:00 2012 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 620.193.4:577.164.2(043.2) 16703510 URN:SI:UM:DK:KWFQPXOO VS_Kondic_Tanja_2012.pdf VS_Kondic_Tanja_2012.pdf 1 83A9E7114F91F7B4A292850C23AC051D 5fc6bcf86d9af6e17138affd0b1fea03b95f13445aeab6fe85ac9848b5413130 8b6b6c92-7c08-11eb-bb7a-00155d0001ca 20.500.12556/dkum/f5d041af-8c8a-444c-9b96-324487003710 https://dk.um.si/Dokument.php?lang=slv&id=51929 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0