Different spray-coatings based on TiAl and TiSi2 as well as commercial dip-coatings were applied to low-alloy F12 steel and a 18Cr1Al steel and tested in an Ar-5%H2-1%H2S atmosphere at a temperature of 700°C, which is representative of conditions prevailing in several industrial gasification processes. Tests were run isothermally for up to 1000 hrs. Certain coatings show a remarkable improvement of corrosion resistance.

Subject
Test methods, Coatings, Materials, Substrates, Spray coating, Inspection, Titanium oxide, Sulfidation, Oxygen, Corrosion protection, Sulfides, Thermal spray coatings, Low alloy steel
Keywords:
high temperature corrosion, protective coatings, reducing sulfidizing atmosphere
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1999
Association for Materials Protection and Performance (AMPP)
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