Abstract
Oxy-fuel combustion combined with CCS (carbon capture and
storage) aims to decrease CO2 emissions in energy
production using fossil fuels. Oxygen firing changes
power plant boiler conditions compared to conventional
firing. Higher material temperatures and harsher and more
variable environmental conditions cause new degradation
processes that are inadequately understood at the moment.
In this study, an Fe-Ni-Cr-Al alloy was developed based
on thermodynamic simulations. The chosen composition was
manufactured as powder by gas atomization. The powder was
sieved into two fractions: The finer was used to produce
thermal spray coatings by high velocity oxy-fuel (HVOF)
and the coarser to manufacture bulk specimens by hot
isostatic pressing (HIP). The high temperature corrosion
properties of the manufactured FeNiCrAl coating and bulk
material were tested in laboratory conditions simulating
oxy-combustion. The manufacturing methods and the results
of high temperature corrosion performance are presented.
The corrosion performance of the coating was on average
between the bulk steel references Sanicro 25 and
TP347HFG.
Original language | English |
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Pages (from-to) | 709-723 |
Journal | Coatings |
Volume | 5 |
Issue number | 4 |
DOIs | |
Publication status | Published - 2015 |
MoE publication type | A1 Journal article-refereed |
Keywords
- oxy-fuel combustion
- powder metallurgy
- thermal spray coating
- HIP
- high temperature
- corrosion testing
- ProperPart