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Korozijski preskus krtačene površine ohišja iz nerjavnega jekla AISI 304Torkar, Matjaž ; Mandrino, Djordje, dr. fizike, 1964-2021 ; Lamut, Martin, 1977-Ohišje gospodinjske naprave za uporabo na prostem je bilo izdelano iz nerjavnega jekla AISI 304. Iz dekorativnih razlogov je bila površina pločevine obdelana s krtačenjem. Med preskusom korozijske ... obstojnosti naprave v vlažni slani komori, so se pojavili rjasti madeži, po robovih pa tudi vzdolžne jamičaste izjede. Predstavljeni so rezultati metalografskih preiskav ter rezultati analize korozijskih produktov. Na površini, obdelani s krtačenjem so bile prisotne jamičaste izjede, v deformiranem delu pločevine pa je bil prisoten tudi martenzit, ki je nastal med hladnim preoblikovanjem pločevine. V vlažnem slanem okolju (NaCl) je imela krtačena površina slabšo korozijsko odpornost v primerjavi z neobdelano površino. Vzrok za pričetek korozijskih pojavov je poškodovanje pasivnega filma med krtačenjem, slabša repasivacija po krtačenju, prisotnost deformacijskega martenzita in številni razpotegnjeni vključki v osnovi. Mogoč vzrok za pričetek jamičaste korozije pa so tudi ostanki materiala krtač na površini po krtačenju. Zaradi slabše odpornosti površine je prisotnost kloridov povzročila pojav jamičaste korozije. Za preprečevanje pojava jamičaste korozije v okolju, kjer sta prisotni vlaga in ioni klora, bi bila bolj primerna uporaba nerjavnega jekla AISI 316, ki je legirano z molibdenom.Source: 13. seminar o procesni metalurgiji jekla, Moravče, 17. in 18. maj 2007 (2007, Str. 127-133)Type of material - conference contributionPublish date - 2007Language - slovenianCOBISS.SI-ID - 608938
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| 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 |
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