Abstract
The corrosion behavior of gun-barrel steel in 37.8% hydrochloric acid (HCI) at room temperature was investigated as a function of exposure time by several methods, including mass loss measurement, atomic absorption spectrometer (AAS), x-ray diffraction (XRD), scanning electron microscopy (SEM)/ energy dispersive x-ray analysis (EDX), x-ray fluorescence (XRF), and x-ray absorption fine structure (XAFS). The corrosion rate showed unsteady-state behavior: however, time had no significant effect on the composition of corrosion product. XRD analyses of this surface corrosion indicated the formation of akaganeite (β-FeOOH). Fluorescence XAFS studies revealed that the iron coordination environment in the steel was similar to that of the body-centered cubic (bcc) iron. Surface sensitive total electron yield (TEY) XAFS showed that the structure of the corrosion product was invariant as a function of exposure time.
| Original language | American English |
|---|---|
| Pages (from-to) | 370-380 |
| Number of pages | 11 |
| Journal | Corrosion |
| Volume | 58 |
| Issue number | 4 |
| DOIs | |
| State | Published - 2002 |
ASJC Scopus subject areas
- General Chemistry
- General Chemical Engineering
- General Materials Science
Keywords
- Atomic absorption spectrometer
- Energy dispersive x-ray analysis
- Hydrochloric acid
- Scanning electron microscopy
- Total electron yield
- X-ray absorption fine structure
- X-ray diffraction
- X-ray fluorescence