20 KB507 KB17 KB200020242011Kocijan, Aleksandraštevilka:2letnik:45str. 91-94ISSN:1580-2949COBISSID:854954URN:URN:NBN:SI:doc-ASGNCPWPenInštitut za kovinske materiale in tehnologijeMateriali in tehnologijeavstenitna jeklaciklična voltametrijakorozijamorska vodanerjavna jeklapotenciometrične meritveA comparison of the corrosion behaviour of austenitic stainless steels in artificial seawater| Primerjava korozijskih lastnosti avstenitnih nerjavnih jekel v simulirani morski vodi|The evolution of the passive films formed on AISI 317LNM and AISI 316L stainless steels in artificial seawater was studied using the electrochemical techniques of cyclic voltammetry and potentiodynamic measurements. The extent of the passive range increased signifficantly for the AISI 317LNM stainless steel compared to the AISI 316L in the investigated solution. The cyclic voltammograms of the AISI 317 LMN and AISI 316L were reconded in artificial seawater. The current-density peaks formed during the cyclic voltammetry were ascribed to the corresponding electrochemical processes taking place on the surface of the investigated materials, and the influence of the potential scan rate was also studied. The current density of the peaks increased linearly with the scan rate. The potentials of the anodic and cathodic peaks moved slightly, with the increasing scan rate, towards more positive and negative values, respectivelyZ elektrokemijskimi tehnikami ciklične voltametrije in potenciodinamskih meritev smo raziskovali tvorbo pasivne plasti na površini nerjavnih jekel AISI 317LNM in AISI 316L v raztopini simulirane morske vode. Širina pasivnega območja je pri nerjavnem jeklu AISI 317 LMN bistveno večja kot pri AISI 316L v preiskovani raztopini. S ciklično voltametrijo smo opisali nastale vrhove s procesi, ki potekajo na površini preiskovanih vzorcev. Raziskovali smo tudi vpliv spreminjanja potenciala s časom na obliko cikličnih voltamogramov. Ugotovili smo, da z naraščajočo hitrostjo spreminjanja potenciala s časom prihaja do rahlega naraščanja in premika vrhovTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaInštitut za kovinske materiale in tehnologije