Naslov
An investigation of the surface damage of hot plates after black oxide coating

Autori
Nagode, Aleš ; Klančnik, Grega ; Gojić, Mirko ; Kosec, Borut ; Zorc, Borut ; Kosec, Ladislav

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the 11th International Scientific Conference on Advanced Production Technologies / Čosić, Ilija - Novi Sad : Faculty of Technical Sciences, Department of Production Engineering, 2012, 41-44

ISBN
978-86-7892-419-4

Skup
11th International Scientific Conference MMA 2012 - Advanced Production Technologies

Mjesto i datum
Novi Sad, Srbija, 20.09.2012. - 21.09.2012

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
whiskers; grey cast iron; magnetite (Fe3O4); hematite (Fe2O3)

Sažetak
After the black-oxide coating brown stains were observed forming on the surfaces of grey-cast-iron hot plates made for an electric stove. These stains were metallographically examined using a scanning electron microscope (SEM) equipped with an energy-dispersive X-ray spectrometer (EDXS). For the phase identification we also employed X-ray diffraction (XRD) analyses. The results of the analyses indicated that the stained surfaces of the hot plates were covered with whiskers of hematite (Fe2O3), while on the surfaces of the non-defective hot plates only magnetite (Fe3O4) was present. The thermodynamic calculations confirmed the possibility of the formation of hematite (Fe2O3) as a result of the oxidation of magnetite (Fe3O4) if the partial pressure of oxygen is increased during the black-oxide-coating process.

Izvorni jezik
Engleski

Znanstvena područja
Metalurgija

POVEZANOST RADA