Hot corrosion behavior of HVOF-sprayed CoNiCrAlYSi coatings in a sulphate environment
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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: Vacuum
سال: 2015
ISSN: 0042-207X
DOI: 10.1016/j.vacuum.2015.09.015