Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The elemental composition of the passive film formed on duplex stainless steel before and after hydrogen charging.
| Passive film | Composition in wt.% | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fe | FeO | Fe2O3 | Fe3O4 | FeOOH | Cr | Cr2O3 | Cr(OH)3 | CrO3 | O2− | OH− | H2O | |
| Before hydrogen charging | 1.29 | 44.11 | 54.60 | 0 | 0 | 1.87 | 16.80 | 81.32 | 0 | 35.29 | 58.98 | 5.73 |
| After hydrogen charging | 1.38 | 0 | 0 | 44.91 | 53.71 | 2.10 | 0 | 58.87 | 39.03 | 11.14 | 75.44 | 4.65 |
