Hot corrosion behavior of Al2O3–Cr2O3 refractory by molten glass at 1200 °C under static condition

Nath, Mithun; Ghosh, Arup; Tripathi, Himansu Sekhar

doi:10.1016/j.corsci.2015.10.004

Cited by 55 publications

(24 citation statements)

References 35 publications

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“…% Al, aluminium participates in the corrosion together with chromium. According to our previous work on Ni-base alloys with Al addition, Al is more likely to dissolve in molten glass due to its higher chemical activity than Cr, which has also been proved by other investigations [12,21].…”

Section: Corrosion Mechanismsupporting

confidence: 56%

Effect of further alloying elements on corrosion resistance of Ni-Cr alloys in molten glass

Yan

Sun

et al. 2016

Corrosion Science

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Section: Corrosion Mechanismsupporting

confidence: 56%

Effect of further alloying elements on corrosion resistance of Ni-Cr alloys in molten glass

Yan

Sun

et al. 2016

Corrosion Science

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“…According to Nath et al, the series of regular peaks, along with the main characteristic peaks of chromium oxide, can be confirmed as the characteristic peaks of Cr 2 O 3 ‐based solid solutions ((Cr, Fe) 2 O 3 , (Cr, Al) 2 O 3 , (Cr, Fe, Al) 2 O 3 ). As shown in Figure , in all the tested samples, a series of peaks corresponding to the characteristic peaks of Cr 2 O 3 , shifted toward higher 2θ angles but with lowered intensities.…”

Section: Results and Disscussionmentioning

confidence: 95%

Degradation mechanism of Cr₂O₃‐Al₂O₃‐ZrO₂ refractories in a coal‐water slurry gasifier: Role of stress cracks

et al. 2020

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Durability and corrosion behavior of refractory lining, a core part of a commercial water‐coal slurry gasifier, largely determine its gas yield rate and carbon conversion rate. In this work, corrosion behavior of high chromite‐containing refractory served for 4200 hours in a water‐coal slurry gasifier was studied, and the role of generated stress cracks on its degradation behavior was elucidated. The results demonstrated that the depth of penetration under the assistance of the cracks was up to 2.60 cm, which was much deeper than that in the case free from stress crack. The sub‐surface, accompanied by cracking, provided a pathway for slag penetration and resulted in more severe corrosion. Furthermore, the isolation layer of (Cr, Fe, Al)2O3 solid solution on the refractory’ surface trapped most of the iron oxides. As a result, a further attack from other main corrosive species was controlled by their diffusion through it.

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“…Therefore, the selective dissolution of Al is the predominant oxidation reaction in 8Al alloy. Figure 11 shows the EPMA results of 10Al alloy, the surface layer of alloy has peeled off from the substrate in some region, which is ascribed to the extremely high 9 solubility of alumina in molten glass [18,[24][25][26]. According to the results by Manfreido [24], the alumina solubility is more than 20 times higher than that for chromia.…”

Section: Characterization Of Phase Structure and Element Distributionmentioning

confidence: 96%

Effect of alloyed Al on the corrosion behaviour of Ni-base alloys in molten glass under static condition

Yan

Sun

2016

Corrosion Science

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Ni-base alloys with different Al contents of 0-10 wt. % were designed and the corrosion behaviour was evaluated by static immersion in molten glass at 1050 °C.Results indicate that a small amount of Al (2-5 wt.%) is advantageous to mitigate the corrosion of the commercial Ni-base alloy, whereas further increase of Al content (8-10 wt.%) accelerates the corrosion process. In Al-added alloys, the corrosion of Cr element is suppressed by the Al dissolution, and the formation of inner alumina in high Al alloys leads to the surface exfoliation. The corrosion mechanism strongly depends on the Al content in alloys.

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Hot corrosion behavior of Al2O3–Cr2O3 refractory by molten glass at 1200 °C under static condition

Cited by 55 publications

References 35 publications

Effect of further alloying elements on corrosion resistance of Ni-Cr alloys in molten glass

Effect of further alloying elements on corrosion resistance of Ni-Cr alloys in molten glass

Degradation mechanism of Cr₂O₃‐Al₂O₃‐ZrO₂ refractories in a coal‐water slurry gasifier: Role of stress cracks

Effect of alloyed Al on the corrosion behaviour of Ni-base alloys in molten glass under static condition

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Hot corrosion behavior of Al2O3–Cr2O3 refractory by molten glass at 1200 °C under static condition

Cited by 55 publications

References 35 publications

Effect of further alloying elements on corrosion resistance of Ni-Cr alloys in molten glass

Effect of further alloying elements on corrosion resistance of Ni-Cr alloys in molten glass

Degradation mechanism of Cr2O3‐Al2O3‐ZrO2 refractories in a coal‐water slurry gasifier: Role of stress cracks

Effect of alloyed Al on the corrosion behaviour of Ni-base alloys in molten glass under static condition

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Degradation mechanism of Cr₂O₃‐Al₂O₃‐ZrO₂ refractories in a coal‐water slurry gasifier: Role of stress cracks