Application of insulated protective coatings for reduction of corrosion potential in high temperature water
- GE Corporate Research and Development Center, Schenectady, NY (United States)
This paper describes an approach for achieving low corrosion potentials on structural materials exposed to high temperature water, even without the addition or presence of reducing species like H{sub 2}. This approach employs highly insulating coatings, e.g. yttria stabilized zirconia (YSZ) on structural materials to greatly restrict O{sub 2} transport rate to the metal surface while simultaneously preventing the formation of a differential aeration crevice cell because of its highly insulating character. Initial experimental data on 304 stainless steel (SS) coated by air plasma spray show that the corrosion potential of YSZ coated 304 SS remained at {approximately} {minus}0.5 V{sub she} in 288 C water containing up to 200 ppb O{sub 2} and no H{sub 2}.
- OSTI ID:
- 367712
- Report Number(s):
- CONF-960389--
- Country of Publication:
- United States
- Language:
- English
Similar Records
Application of thermal spray coatings for 304 SS SCC mitigation in high temperature water
In-situ noble metal deposition and its durability on the catalytic response of stainless steel surfaces in high temperature water