Primary stage of Fe-Cr-C alloy oxidation at 1100 degree C

Journal Article · Mon Feb 01 04:00:00 EST 1988 · Oxidation of Metals; (USA)

DOI:https://doi.org/10.1007/BF00656352· OSTI ID:5651173

Hajduga, M; Kucera, J ^[1]

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1. Univ. of Katowice (Poland)

The oxidation of Fe-Cr-C alloys containing 13% Cr and carbon ranging from 0.15 to 1.63% was studied at 100{degree}C for 3 hr. It was found that the oxidation rate increased with increasing carbon content in the alloys. The measured time variation of CO{sub 2} evolution showed that, during the first period of oxidation (0-40 min), a compact surface layer of FeO formed, which prohibited the free transfer of CO{sub 2} into the streaming oxidation atmosphere. The measurable CO{sub 2} evolution started between 40 and 50 min, and the most rapid evolution occurred in the interval t = 60-90 min of oxidation. This effect corresponds well to scale-layer damage and to the maximum O{sub 2} absorption. The measurements carried out by the combined thermobalance-chromatograph equipment were supplemented by metallographic investigation of the oxide layers. The results enabled them to interpret the primary stage of the oxidation of Fe-Cr-C alloys and to discuss the relations between the cation diffusivities in the individual oxide sublayers, i.e., in wustite, magnetite, and hematite.

• OSTI ID: 5651173
• Journal Information: Oxidation of Metals; (USA), Journal Name: Oxidation of Metals; (USA) Vol. 29:1-2; ISSN 0030-770X; ISSN OXMEA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102 -- Metals & Alloys-- Structure & Phase Studies
360105* -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
CARBON
CARBON ADDITIONS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CHROMIUM STEELS
COHERENT SCATTERING
DEBYE-SCHERRER METHOD
DESORPTION
DIFFRACTION
DIFFRACTION METHODS
DIFFUSION
ELECTRON MICROSCOPY
ELEMENTS
FAILURES
FRACTURES
HIGH ALLOY STEELS
IRON ALLOYS
IRON BASE ALLOYS
IRON COMPOUNDS
IRON OXIDES
KINETICS
MICROSCOPY
NONMETALS
OXIDATION
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PHASE STUDIES
REACTION KINETICS
SCALING
SCANNING ELECTRON MICROSCOPY
SCATTERING
STAINLESS STEELS
STEELS
TEMPERATURE EFFECTS
TRANSITION ELEMENT COMPOUNDS
WEIGHT MEASUREMENT
X-RAY DIFFRACTION