Critical factors affecting the high-temperature corrosion performance of iron aluminides

Tortorelli, P.F.; Natesan, K.

doi:10.1016/s0921-5093(98)00924-1

Cited by 220 publications

(114 citation statements)

References 39 publications

Supporting

Mentioning

112

Contrasting

Order By: Relevance

“…Since the carbon content is the same in all the alloys, the difference in microstructure exhibited by the alloys can be attributed to the variation in Al content. In alloy 1, the dendrites are single-phase Fe 3 Al and the entire interdendritic region is a continuous network of Fe 3 AlC 0.69 carbides, as pointed out in our previous work [14,17]. In alloy 2, dendrites are more uniformly dispersed.…”

Section: Phase Identification and Microstructure Analysismentioning

confidence: 51%

“…Based on JCPDS card numbers 45-1203 and 03-0965, peaks of the XRD pattern of alloy 1 (Fig. 1a) can be indexed for Fe 3 Al and Fe 3 AlC 0.69 phases, respectively, whereas in alloys 2 and 3, peaks of the XRD pattern are indexed as / (Fe-Al) and Fe 3 AlC 0.69 phases (Fig. 1b and c).…”

Section: Phase Identification and Microstructure Analysismentioning

confidence: 99%

“…1b and c). In alloy 1, the appearance of an extra peak at the d-value of 2.89 A is due to the reflection of the superlattice plane (200) of Fe 3 Al. This indicates that it is an ordered structure, whereas the other alloys have a disordered structure.…”

Section: Phase Identification and Microstructure Analysismentioning

confidence: 99%

“…Development of iron aluminides based on Fe 3 Al for high temperature applications is an important area of research, as these materials possess unique properties such as high strength to weight ratio, excellent high temperature oxidation and sulfidation resistance [1][2][3][4]. Low room temperature ductility has been a major impediment for mechanical processing of these materials, while a drop in strength above 600 C has limited their possible applications [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

“…Low room temperature ductility has been a major impediment for mechanical processing of these materials, while a drop in strength above 600 C has limited their possible applications [1][2][3][4]. The first review on iron aluminides by McKamey et al [5] and a more recent review by Stoloff [6] bring out salient features of these materials.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Effect of Al content on oxidation behaviour of ternary Fe–Al–C alloys

2002

View full text Add to dashboard Cite

Iron aluminides produced by the electroslag refining technique, having the compositions: (1) Fe-16Al-1C, (2) Fe-10Al-1C, and (3) Fe-8Al-1C were used to investigate the effect of Al on the oxidation behaviour of the Fe-1C-Al system at 700 to 1000 C. Prior to oxidation studies, phase and microstructure of alloys were analysed. The carbide phase, Fe 3 AlC 0.69 , was found to be distributed in the Fe 3 Al matrix in alloy 1 and (Fe-Al) matrix in alloys 2 and 3. The low Al content alloys displayed inversion in the oxidation kinetics below 800 C, while, high Al content alloy displayed inversion phenomena at 1000 C. The mechanism involving inversion in oxidation kinetics was found to be different in the two cases. In the former, it was attributed to the preferential oxidation of Al, while in the latter, to the phase transformation within the Al 2 O 3 . Carbides in the alloy having low Al content showed instability during oxidation.

show abstract

Section: Phase Identification and Microstructure Analysismentioning

confidence: 51%

Section: Phase Identification and Microstructure Analysismentioning

confidence: 99%

Section: Phase Identification and Microstructure Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Effect of Al content on oxidation behaviour of ternary Fe–Al–C alloys

2002

View full text Add to dashboard Cite

show abstract

Fabrication and Characterization of Highly Porous FeAl‐Based Intermetallics by Thermal Explosion Reaction

et al. 2019

View full text Add to dashboard Cite

Porous FeAl-based intermetallics with different nominal compositions ranging from Fe-40 at% Al to Fe-60 at% Al are prepared by a novel process of thermal explosion (TE) mode. The results show that the Al content significantly affects the combustion behavior of the specimens, the ignition temperature of the Fe-Al intermetallics varies from 641 to 633 C and the combustion temperature from 978 to 1179 C. The porous materials exhibit uniform pore structures with porosities and average pore sizes of 52-61% and 20-25 mm, respectively. The TE reaction is the dominant pore formation mechanism regardless of the alloy composition. However, differences in the porosity and average pore size are observed depending on the Al content. The compressive strength of porous Fe-Al intermetallics is in the range of 23-34 MPa, duly applied as filters. Additionally, a surface alumina layer is formed at the early stage and both of the oxidation process and the sulfidation process follows the familiar parabolic rate law in the given atmosphere, exhibiting excellent resistance to oxidation and sulfidation. These results suggest that the porous Fe-Al intermetallics are promising materials for applications in harsh environments with a high-temperature sulfide-bearing atmosphere, such as in the coal chemical industry.

show abstract

Effect of pre‐oxidation of Fe₃Al on its corrosion resistance in sulfur and chlorine contaminated syngas

Ilyushechkin

Dolan

McLennan

et al. 2011

Asia-Pacific J Chem Eng

View full text Add to dashboard Cite

Pre-oxidation treatment of Fe 3 Al alloy, a material used in high temperature gas filtration, is common practice to improve corrosion resistance. This work evaluates the various pre-oxidation procedures in terms of the quality of the protective layers formed, using microstructural analysis and corrosion tests. The effect of atmosphere on the oxidation kinetics at 950 C and the oxide layer morphology was determined. The corrosion resistance of Fe 3 Al filters was investigated in simulated coal-derived synthesis gas in the temperature range 600-800 C. It was found that the corrosion resistance of Fe 3 Al was significantly improved by the development of the surface oxide layer, and that the quality of oxide layer is dependent on the oxidation treatment conditions, such partial oxygen pressure, pO 2 . The best corrosion resistance was achieved with a twostage oxidation treatment, involving initial pre-oxidation at low pO 2 and final pre-oxidation at high pO 2 .

show abstract

Critical factors affecting the high-temperature corrosion performance of iron aluminides

Cited by 220 publications

References 39 publications

Effect of Al content on oxidation behaviour of ternary Fe–Al–C alloys

Effect of Al content on oxidation behaviour of ternary Fe–Al–C alloys

Fabrication and Characterization of Highly Porous FeAl‐Based Intermetallics by Thermal Explosion Reaction

Effect of pre‐oxidation of Fe₃Al on its corrosion resistance in sulfur and chlorine contaminated syngas

Contact Info

Product

Resources

About

Critical factors affecting the high-temperature corrosion performance of iron aluminides

Cited by 220 publications

References 39 publications

Effect of Al content on oxidation behaviour of ternary Fe–Al–C alloys

Effect of Al content on oxidation behaviour of ternary Fe–Al–C alloys

Fabrication and Characterization of Highly Porous FeAl‐Based Intermetallics by Thermal Explosion Reaction

Effect of pre‐oxidation of Fe3Al on its corrosion resistance in sulfur and chlorine contaminated syngas

Contact Info

Product

Resources

About

Effect of pre‐oxidation of Fe₃Al on its corrosion resistance in sulfur and chlorine contaminated syngas