Influence of KCl and HCl on a laser clad FeCrAl alloy: In-Situ SEM and controlled environment High temperature corrosion
Source abstract
Abstract
This study investigated the effects of HCl and KCl on a laser-clad FeCrAl coating at 450 °C in an in-situ ESEM followed by a furnace exposure. In all in-situ TEM cross-sections, three major phases were identified: an iron rich oxide, an iron-chromium mixed oxide and an aluminium enriched layer. HCl allowed chlorine based corrosion to occur which suggests interaction from its gas phase. EDX of the regions around KCl crystals showed a decrease in chromium which is an indication of chlorine selectively removing chromium. Moreover, the mass gain in HCl with KCl was significantly lower than that observed in air with KCl.
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Research context
OpenAlex topics: High-Temperature Coating Behaviors · High Temperature Alloys and Creep · Metallurgical Processes and Thermodynamics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (25)
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1. Skea · 2009 · 25
2. Fireside slagging, fouling, and high-temperature corrosion of heat-transfer surface due to impurities in steam-raising fuels
3. A microstructural and kinetic investigation of the KCl-Induced corrosion of an FeCrAl alloy at 600 °C10.1007/s11085-015-9546-3 ↗
4. Alumina scale formation on a powder metallurgical FeCrAl alloy (Kanthal APMT) at 900-1,100 °C in dry O2 and in O2 + H 2O10.1007/s11085-009-9177-7 ↗
5. The effect of gas composition and contaminants on scale growth rates of FeCrAI alloys10.1002/maco.200503917 ↗
6. A review on biomass as a fuel for boilers10.1016/j.rser.2011.02.015 ↗
7. Combustion properties of biomass10.1016/S0378-3820(97)00059-3 ↗
8. The implications of chlorine-associated corrosion on the operation of biomass-fired boilers10.1016/S0360-1285(00)00003-4 ↗
9. Hydrogen chloride release from combustion of Corn Straw in a fixed bed10.1115/1.4038313 ↗
10. Cyclic corrosion and chlorination of an FeCrAl alloy in the presence of KCl10.1007/s11085-015-9554-3 ↗
11. KCl-Induced Corrosion of the FeCrAl Alloy Kanthal® AF at 600 °C and the Effect of H2O10.1007/s11085-014-9506-3 ↗
12. Fireside corrosion behavior of HVOF and plasma-sprayed coatings in advanced Coal/Biomass Co-fired power plants10.1007/s11666-013-9887-x ↗
13. Fireside corrosion degredation of HVOF thermal sprayed FeCrAl coatings at 700-800 °C10.1016/j.surfcoat.2015.01.074 ↗
14. In-situ scanning electron microscopy and electron backscatter diffraction investigation on the oxidation of pure iron10.1179/mht.2005.021 ↗
15. An ESEM in situ investigation of initial stages of the KCl induced high temperature corrosion of a Fe–2.25Cr–1Mo steel at 400 °C10.1016/j.corsci.2011.03.007 ↗
16. Process parameter optimisation of laser clad iron based alloy: predictive models of deposition efficiency, porosity and dilution10.1016/j.surfcoat.2018.05.054 ↗
17. Birks · 2006
18. Chloridation and oxidation of iron, chromium, nickel and their alloys in chloridizing and oxidizing atmospheres at 400-700°C10.1016/S0010-938X(99)00142-0 ↗
19. Experimental and thermodynamic investigations on the chlorine-induced corrosion of HVOF thermal sprayed NiAl coatings and 304 stainless steels at 700 °C10.1016/j.corsci.2018.02.047 ↗
20. The influence of HCl on the oxidation of iron at elevated temperatures10.1002/(SICI)1521-4176(200005)51:5<277::AID-MACO277>3.0.CO;2-C ↗
21. Field test corrosion experiments in Denmark with biomass fuels Part 1: straw-firing10.1002/1521-4176(200202)53:2<121::AID-MACO121>3.0.CO;2-R ↗
22. The effects of chlorides, hydrogen chloride, and sulfur dioxide in the oxidation of steels below deposits10.1016/0010-938X(95)00011-8 ↗
23. Impact of deposits and their morphology on the active corrosion of iron in chlorine- and sulfur-containing atmospheres in the tempearture range of 350-500 °C10.1007/s11085-018-9845-6 ↗
24. In situ ESEM investigation of KCl-induced corrosion of a FeCrAl and model FeNiCrAl alloy in lab air at 450 °C10.1149/2.0581514jes ↗
25. KCl-induced corrosion of an FeCrAl alloy at 600°C in O2+H2O environemnt: the effect of pre-oxidation10.1007/s11085-014-9507-2 ↗