Abstract
| Original language | English |
|---|---|
| Journal | Surface and Coatings Technology |
| Volume | 362 |
| Pages (from-to) | 355-365 |
| ISSN | 0257-8972 |
| DOIs | |
| Publication status | Published - 2019 |
Keywords
- Biomass combustion
- Fireside corrosion
- Ni coating
- Ni2Al3 coating
- Power plant testing
Cite this
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Corrosion behaviour of Ni and nickel aluminide coatings exposed in a biomass fired power plant for two years. / Wu, D. L.; Dahl, K. V.; Christiansen, T. L.; Montgomery, M.; Hald, J.
In: Surface and Coatings Technology, Vol. 362, 2019, p. 355-365.Research output: Contribution to journal › Journal article › Research › peer-review
TY - JOUR
T1 - Corrosion behaviour of Ni and nickel aluminide coatings exposed in a biomass fired power plant for two years
AU - Wu, D. L.
AU - Dahl, K. V.
AU - Christiansen, T. L.
AU - Montgomery, M.
AU - Hald, J.
PY - 2019
Y1 - 2019
N2 - Ni and Ni2Al3 coatings were applied to superheater tubes that were built into a wood-fired boiler with an outlet steam temperature of 520 °C. The present paper evaluates the performance of the coatings after two years of service. The corrosion performance of the coatings is discussed with respect to the temperature histograms and deposit composition and compared to the performance of the coatings after the first year. The Ni coatings showed extremely protective behaviour for 1 year however after 2 years exposure, the Ni coating was chemically attacked, thick NiO was formed and sulphur containing precipitates were present at the base of the Ni layer indicating grain boundary ingress of corrosive species. For the Ni2Al3 coatings, localized attack was observed after the first year of exposure, but after two years no intact nickel aluminide coatings were observed.
AB - Ni and Ni2Al3 coatings were applied to superheater tubes that were built into a wood-fired boiler with an outlet steam temperature of 520 °C. The present paper evaluates the performance of the coatings after two years of service. The corrosion performance of the coatings is discussed with respect to the temperature histograms and deposit composition and compared to the performance of the coatings after the first year. The Ni coatings showed extremely protective behaviour for 1 year however after 2 years exposure, the Ni coating was chemically attacked, thick NiO was formed and sulphur containing precipitates were present at the base of the Ni layer indicating grain boundary ingress of corrosive species. For the Ni2Al3 coatings, localized attack was observed after the first year of exposure, but after two years no intact nickel aluminide coatings were observed.
KW - Biomass combustion
KW - Fireside corrosion
KW - Ni coating
KW - Ni2Al3 coating
KW - Power plant testing
U2 - 10.1016/j.surfcoat.2018.12.129
DO - 10.1016/j.surfcoat.2018.12.129
M3 - Journal article
VL - 362
SP - 355
EP - 365
JO - Surface and Coatings Technology
JF - Surface and Coatings Technology
SN - 0257-8972
ER -