Selective oxidation of Fe-Cr alloys

Journal Article · Thu Jan 01 04:00:00 EST 1981 · Oxid. Met.; (United States)

DOI:https://doi.org/10.1007/BF00603757· OSTI ID:6788512

Crouch, I G; Scully, J C

The phenomenon of selective oxidation is briefly reviewed with particular reference to the Fe-Cr system. The results of experiments with a binary Fe-13%Cr alloy and a commercial steel, carried out over the temperature range 400-800/sup 0/C in various hydrogen-water vapor mixtures are reported. Modes of growth are postulated and the protective qualities of the films shown to be dependent more upon morphology and structure than upon composition. Although protective, ..cap alpha..-Cr/sub 2/O/sub 3/ films can be grown on the binary alloy, the presence of 0.7% Mn in the commercial steel results in the preferential formation of a nonprotective Mn-Cr spinel. In addition to ..cap alpha..-Cr/sub 2/O/sub 3/ and the Mn-Cr spinels other oxide phases are identified and their effects considered.

• Research Organization: Military Vehicles and Engineering Establishment, Christchurch, Dorset
• OSTI ID: 6788512
• Journal Information: Oxid. Met.; (United States), Journal Name: Oxid. Met.; (United States) Vol. 15:1/2; ISSN OXMEA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
ALKALINE EARTH METAL COMPOUNDS
ALLOY SYSTEMS
ALLOYS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
BINARY ALLOY SYSTEMS
CHALCOGENIDES
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
COATINGS
COMPARATIVE EVALUATIONS
IRON ALLOYS
IRON BASE ALLOYS
KINETICS
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MINERALS
MORPHOLOGY
OXIDATION
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PROTECTIVE COATINGS
QUANTITATIVE CHEMICAL ANALYSIS
SPINELS