Abstract
The effect of yttrium on the corrosion behaviour of 09CrCuSb alloy (ND steel) in concentrated sulphuric acid at 383. K has been investigated. The results demonstrate that addition of 0.15. wt.% Y effectively improves the corrosion resistance of such alloy. By observing the surface morphology and cross-section of the scale, it is found that Y addition refines the corrosion product, and improves the adhesion ability between the scale and the matrix. The electrochemical test exhibits a decrease passive currents as well as a higher passive and charge transfer resistance of the Y-modified alloy.
| Original language | English |
|---|---|
| Pages (from-to) | 369-375 |
| Number of pages | 7 |
| Journal | Corrosion Science |
| Volume | 69 |
| DOIs | |
| State | Published - Apr 2013 |
Keywords
- A. Alloy
- A. Rare earth elements
- A. Sulfuric acid
- B. EIS
- B. Polarization
- C. Acid corrosion
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