20.500.12556/DKUM-17590 PROUČEVANJE KOROZIJSKE ODPORNOSTI RAZLIČNIH NERJAVNIH JEKEL V KISLEM MEDIJU OB PREPIHOVANJU S CO2 IN N2 ANALYSIS OF CORROSION RESISTIVITY OF DIFFERENT STAINLESS STEELS IN ACID MEDIUM BLOWN WITH CO2 AND N2 PROUČEVANJE KOROZIJSKE ODPORNOSTI RAZLIČNIH NERJAVNIH JEKEL V KISLEM MEDIJU OB PREPIHOVANJU S CO2 IN N2 Povzetek V diplomskem delu je opisan eksperimentalni postopek merjenja korozije nerjavnih jekel v kislem mediju H2SO4. Izbrane vzorce jekel smo v paralelnih meritvah potapljali v kislino ter po določenih časovnih intervalih določali izgubo mase posameznega jekla. Prav tako smo poskuse izvajali v kislini z različnimi koncentracijami ter dodatno študirali vpliv prepihovanja s CO2 in N2. Rezultati meritev so pokazali, da korozija poteka različno glede na koncentracijo izbranega medija, kakor tudi glede na prepihovanje z različnimi plini. Prepihovanje korodirnega medija s plini načeloma upočasnjuje korozijo nerjavnih jekel. V našem primeru smo ugotovili, da gravimetrična metoda določanja izgube mase za kratek čas izvajanja poskusov ni najbolj primerna. STUDY OF CORROSION RESISTANCE OF DIFFERENT STAINLESS STEELS IN SULFURIC ACID AT AERATING WITH CARBON DIOXIDE AND NITROGEN Abstract: In this diploma work an experimental procedure of measuring the corrosion of stainless steels in acid solution H2CO4 is described. In parallel measures we immersed selected samples of steels into acid and by defined time intervals we defined loss of mass of individual steel. We also performed experiments in acid with different concentrations and additionally studied an influence of aerating with CO2 and N2. It is evident from the results that corrosion goes differently regarding to concentration of selected acid solution and also regarding to aerating with different gasses. Generally, aerating of corroded solution with gasses reduces corrosion of stainless steels. In our case we found out, that gravimetric method for mass loss determination is not the best one in the case when short corrosion times are studied. Ključne besede: korozija korozijska odpornost jekel gravimetrična metoda določanje hitrosti korozije prepihovanje plini N2 in CO2 corrosion corrosion resistance of steels gravimetric method defining the speed of corrosion aerating gasses N2 and CO2. true true false [J. Juvan] Slovenski jezik Angleški jezik Diplomsko delo 2011-02-28 07:28:11 2011-03-01 11:41:57 2022-04-13 09:38:07 2023-12-22 03:37:48 2011 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 620.193.4(043.2) 15140118 URN:SI:UM:DK:LPJX6FIU VS_Juvan_Janez_2011.pdf VS_Juvan_Janez_2011.pdf 1 190F06D4308DCF7A808BBB74B0D3BA5B b719baaae82dd0dc23f3864b4e86cf8fa3ab5362dd8ab06f3d48fe4fef50968a edb0a0cb-7c04-11eb-bb7a-00155d0001ca 20.500.12556/dkum/cf4ec2fe-b39f-498c-831f-47656f6a5d46 https://dk.um.si/Dokument.php?lang=slv&id=20609 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0