High-temperature oxidation of cast steel in water vapour

• Autorzy: Zapała R. , Pach S. , Górny M. , Homa M. , Siewiorek A.

Identyfikatory

DOI

10.7356/iod.2015.15

Warianty tytułu

PL

Wysokotemperaturowe utlenianie staliwa w parze wodnej

• Języki publikacji: EN

Abstrakty

EN

The article presents the results of studies of the oxidation process conducted at 900°C for 12 hours in an atmosphere of water vapour on cast heat-resistant steel with a diversified structure (ferritic-austenitic, austenitic, and austenitic with carbides). Based on the studies of oxidation kinetics, it was found that samples were oxidized in approximation with the rules of linear law. Depending on the chemical composition and structure of tested alloys, the scale formed on the alloy surface had different properties. In the tested material characterised by a ferritic-austenitic structure, the tendency of the scale to detach from the surface of the metallic substrate was observed. It was probably due to different coefficients of the thermal expansion of austenite and ferrite.

PL

Praca prezentuje wyniki badań utleniania w atmosferze pary wodnej staliwa żaroodpornego o różnej strukturze (ferrytyczno-austenitycznej, austenitycznej i austenitycznej z węglikami) w temperaturze 900°C w ciągu 12 godzin. Na podstawie badań kinetyki utleniania stwierdzono, że badane próbki utleniały się w przybliżeniu zgodnie z prawem liniowym. W zależności od składu chemicznego i struktury badanych stopów obserwowano odmienne właściwości powstałych zgorzelin. W przypadku materiału o strukturze ferrytyczno-austenitycznej stwierdzono odpadanie zgorzeliny od powierzchni rdzenia metalicznego związane prawdopodobnie z różnym współczynnikiem rozszerzalności cieplnej austenitu i ferrytu.

Słowa kluczowe

EN

cast heat-resistant steel; microstructure; high-temperature corrosion; water vapour

PL

staliwo żaroodporne; mikrostruktura; korozja wysokotemperaturowa; para wodna

• Wydawca: Instytut Odlewnictwa
• Czasopismo: Prace Instytutu Odlewnictwa
• Rocznik: 2015
• Tom: T. 55, nr 3
• Strony: 61--70
• Opis fizyczny: Bibliogr. 31 poz., rys., tab.

Twórcy

autor

Zapała R.

• AGH University of Science and Technology, Faculty of Foundry Engineering, Department of Cast Alloys and Composites Engineering, Reymonta 23 Str., 30-059 Krakow, Poland

autor

Pach S.

• AGH University of Science and Technology, Faculty of Foundry Engineering, Department of Cast Alloys and Composites Engineering, Reymonta 23 Str., 30-059 Krakow, Poland

autor

Górny M.

• AGH University of Science and Technology, Faculty of Foundry Engineering, Department of Cast Alloys and Composites Engineering, Reymonta 23 Str., 30-059 Krakow, Poland

autor

Homa M.

• Foundry Research Institute, Centre for High Temperature Studies, ul. Zakopiańska 73, 30-418 Krakow, Poland

autor

Siewiorek A.

• Foundry Research Institute, Centre for High Temperature Studies, ul. Zakopiańska 73, 30-418 Krakow, Poland

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