Hot corrosion of MCrAlY coatings in sulphate and SO 2 environment at 900 °C: Is SO 2 necessarily bad?
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چکیده
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Hot corrosion behavior of HVOF-sprayed CoNiCrAlYSi coatings in a sulphate environment
HVOF-sprayed CoNiCrAlYSi coatings were tested at 900 °C in a hot corrosion environment containing sodium-potassium sulphates. The HVOF spraying caused the typical splat-on-splat structure. The results after the hot corrosion testing showed that the corrosion preferentially occurred at the coating surface and the splat boundaries. The oxidation along the splat boundaries can isolate the splat fr...
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ژورنال
عنوان ژورنال: Surface and Coatings Technology
سال: 2015
ISSN: 0257-8972
DOI: 10.1016/j.surfcoat.2014.11.065