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Preiskava korozijskih poškodb na krtačeni površini pločevine iz nerjavnega jekla AISI 304 = M. Torkar ... [et al.]Torkar, Matjaž ...Ohišje, izdelano iz pločevine iz nerjavnega jekla AISI 304, je bilo za lepši videz obdelano s krtačenjem površine in preskušeno v slani korozijski komori. Med preskusom korozijske obstojnosti so se ... na površini pojavili rjasti madeži, po robovih pa tudi vzdolžne jamičast izjede. Predstavljeni so rezultati metalografskih preiskav ter rezultati AES in XPS analize korozijskih produktov. Na površini, obdelani s krtačenjem, so bile prisotne jamičaste izjede, v mikrostrukturi v deformiranem delu pločevine pa je bil prisoten tudi deformacijski martenzit, ki je nastal med hladnim preoblikovanjem pločevine. Na neobdelani površini korozijskih poškodb ni bilo opaziti. Vzroki za pričetek korozijskih pojavov so lahko poškodbe v pasivnem filmu zaradi krtačenja, slabša repasivacija površine po krtačenju, prisotnost deformacijskega martenzita in številni razpotegnjeni vključki v osnovi. Mogoč vzrok za pričetek jamičaste korozije pa so tudi ostanki materiala krtač, ki so ostali na površini po krtačenju. Potrjeno je bilo, da je ob prisotnosti vlage in NaCl, slabša korozijska odpornost površine omogočila pojav jamičaste korozije. Za preprečevanje pojava jamičaste korozije v okolju, kjer so istočasno prisotni vlaga in ioni klora, je potrebno pogosto skrbno čiščenje površine s čisto vodo, bolj primerno pa bi bilo uporabiti nerjavno jeklo AISI 316, ki je legirano z molibdenom in s tem bolj odporno na pojav jamičaste korozije.Source: Zbornik povzetkov (Str. 8)Type of material - conference contributionPublish date - 2007Language - slovenianCOBISS.SI-ID - 604842
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DRS, in which the journal is indexed
| Database name | Field | Year |
|---|
| Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
|---|---|
| Torkar, Matjaž | 05438 |
| Mandrino, Djordje, dr. fizike, 1964-2021 | 08850 |
| Lamut, Martin, 1977- | 25497 |
| Jenko, Monika, metalurginja | 05675 |
Source: Personal bibliographies
and: SICRIS
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