Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1623602 | Journal of Alloys and Compounds | 2008 | 8 Pages |
Abstract
The synergistic erosion-corrosion and corrosion characteristics of mild steel were studied by using rotating disk apparatus and immersing in 0.05Â wt.% SiC suspension, respectively. The difference between cavitation erosion and corrosion was determined by scanning electron microscope (SEM), positron annihilation lifetime spectra (PALS) and X-ray photoelectron spectroscopy (XPS). It was found that the propagation of cracks in pit area induced by cavitation erosion did not appear in the course of corrosion. The PALS results showed that the size and number of vacancy cluster induced by cavitation erosion was much larger than that induced by corrosion damage. The results of core level band spectra indicated that there were chemical shifts in the case of cavitation erosion and no chemical shifts except 40Â min corrosion in immersion process. The results of valence band spectra implied that the oxidation of mild steel induced by cavitation erosion was more than that induced by corrosion damage.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Ming Zhao, Jiadao Wang, Darong Chen, Xiaopeng Hao, Baoyi Wang,