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Using SEM for post-test analysis ofHVOF-sprayed WC-Cr-Ni and WC/CrC coatings after erosion-corrosion in concentrated slurries
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One hour slurry erosion tests in I 0% slurry were carried out on WC-Cr-Ni and WC/CrC coatings both in 3.5% NaCI and tap water. It seems that salinity did not affect the material loss rates (Fig. 2a). The weight losses on WC/CrC coating were significantly less than on WC-Cr-Ni coating both in tap water and 3.5% NaCI.