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Auger electron spectroscopy and depth profile study of oxidation of modified 440c steel
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Ferrante, J. |
| Copyright Year | 1974 |
| Description | Auger electron spectroscopy (AES) and sputtering were used to study selective oxidation of modified 440C steel. The sample was polycrystalline. Oxidation was performed on initially clean surfaces for pressures ranging from 1 x 10 to the minus 7th power to 1 x 10 to the minus 5th power torr and temperatures ranging from room temperature to 800 C. AES traces were taken during oxidation. In situ sputtering depth profiles are also obtained. A transition temperature is observed in the range 600 to 700 C for which the composition of the outer surface oxide changed from iron oxide to chromium oxide. Heating in vacuum about 5 x 10 to the minus 10 power torr to 700 C causes conversion of the iron oxide surface to chromium oxide. |
| File Size | 625422 |
| Page Count | 23 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19740025934 |
| Archival Resource Key | ark:/13960/t24b7v99d |
| Language | English |
| Publisher Date | 1974-10-01 |
| Access Restriction | Open |
| Subject Keyword | Materials, Metallic Corrosion Chromium Oxides Auger Spectroscopy Oxidation Chemical Composition High Temperature Steels Iron Oxides Room Temperature Sputtering Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
