High Temperature Corrosion of Ni-17%W Coatings in Ar-0.2%SO2 Atmosphere

Lee, Dong-Bok;Kwon, Sik-Chol

  • 발행 : 2010.02.28


Coatings of Ni-17 at.%W were electroplated on a steel substrate, and their corrosion behavior was investigated between 600 and $800^{\circ}C$ in an Ar-0.2%$SO_2$ atmosphere. They delayed the corrosion of the steel substrate. They were corroded into an outer NiO-rich layer, and an inner ($WO_3+NiO+NiWO_4$)-mixed oxide layer. Below these oxide layers, a sulfide layer gradually formed.




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