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The oxidation of Fe-Cr surface and bulk alloys at 300C.

Authors
Driscoll-TJ; Needham-PB Jr.
Source
Oxid Met 1979 Jun; 13(3):283-298
NIOSHTIC No.
10009864
Abstract
The oxidation behavior of several surface and bulk fe-cr alloys and iron at 300 deg c and 4 x 10-6 torr oxygen was studied. The surface alloys were fabricated by implantation of 25 kev cr ions into the outermost 300 a of polycrystalline iron samples. The oxide thickness as a function of oxygen exposure was obtained using proton- excited x-ray analysis, and composition profiles of oxide films were obtained using auger electron spectroscopy and ion sputtering. The addition of cr to fe by surface and bulk alloying caused the oxidation rate to decrease and changed the oxidation kinetics from parabolic (for fe) to logarithmic (for cr concentrations >4.7 At pct). Interpretation of the data in terms of simple oxidation theories indicates that the cr additions may reduce the oxidation rate by altering the electronic properties of the metal-oxide interface.
CODEN
OXMEAF
Publication Date
19790601
Document Type
OP; Journal Article
Fiscal Year
1979
NTIS Accession No.
NTIS Price
Identifying No.
OP 57-79
Issue of Publication
3
ISSN
0030-770X
NIOSH Division
CPRC
Source Name
Oxidation of Metals
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