High temperature oxidation in boiler environment of chromized steel

Alia, F F; Kurniawan, Tedi; Asmara, Yuli Panca; Ani, Mohd Hanafi; Nandiyanto, Asep Bayu Dani

doi:10.1088/1757-899x/257/1/012086

Cited by 12 publications

(8 citation statements)

References 10 publications

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“…Rebar has serious corrosion problems when they are contacted with water, salt (NaCl) and carbon dioxide (CO2). In industrial areas where CO2,H2S, S and C are present, corrosive species are more complex which complicate corrosion mechanism Alia et al, 2017;Asmara et al, 2013;Asmara et al, 2011). Corrosion of rebar does not only damage concretes but also reduces concrete strength.…”

Section: Introductionmentioning

confidence: 99%

Application of Plants Extracts as Green Corrosion Inhibitors for Steel in Concrete - A review

Asmara

Kurniawan

Sutjipto

et al. 2018

Indonesian J. Sci. Technol

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High requirements in protection of steel reinforcing bar (steel rebar) from corrosion are necessary since there are multi interaction of corrosive chemicals which cause early damage of concrete buildings. Corrosion of steel in concrete can destroy the concretes and reduce concrete strength. To protect rebar from corrosion, application of corrosion inhibitor is believed to have higher performance compared to other protection systems. To date, organic inhibitors have promising methods in steel rebar protection as they are environment-friendly, compatible with concrete, cost effective and applicable in any various concrete conditions. Thus, demands in using these inhibitors tend to increase significantly. This paper reviews the applications of green corrosion inhibitor specifically highlighted in protecting mechanisms, typical plants extracted, performance in corrosion protection, and classification of green corrosion inhibitors. The corrosion resistances of carbon steels in concrete protected by green inhibitors are in focus. As summary, it can be confidently notified that green corrosion inhibitors for steel in concrete will have a prospect to be used as corrosion prevention in the future with further improvements.

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Section: Introductionmentioning

confidence: 99%

Application of Plants Extracts as Green Corrosion Inhibitors for Steel in Concrete - A review

Asmara

Kurniawan

Sutjipto

et al. 2018

Indonesian J. Sci. Technol

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“…XRD with EDS analysis revealed that the oxide scale formed was porous in nature and contains Fe 2 O 3 in high concentration and Cr 2 O 3 in significant amount, which was further analysed and confirmed by cross-sectional investigation. Alia et al (2017a, 2017b) and Rani et al (2017) observed the formation of Fe 2 O 3 scale during their investigations of boiler steel under the influence of molten salt environment. El-Awadi et al (2016) concluded that the scale, Fe 2 O 3 , was non-protective in nature.…”

Section: Discussionmentioning

confidence: 97%

“…Thus, CNT plays a vital role in the reduction of hot corrosion. The voids, cracks and micro holes in the coating microstructure were filled with the CNT, which acts as a barrier to the corrosive elements (Kumar et al , 2020a, 2020b; Alia et al , 2017b; Gell et al , 2018). Therefore, based on the present research work, it can be concluded that CNT reinforcement in ZrO 2 Y 2 O 3 coatings was able to provide better corrosion resistance than the conventional coatings for boiler alloy steel at an elevated working temperature.…”

Section: Discussionmentioning

confidence: 99%

Hot corrosion behaviour of CNT-reinforced ZrO₂-Y₂O₃ composite coatings on boiler tube steel at 900°C

Kumar

Bhatia²,

Singh³

2021

ACMM

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Purpose In Indian thermal power plants, the main cause of boiler tube failure is the presence of molten sulphates and vanadates, which deteriorate the tube material at high temperatures. To combat the hot corrosion failure of metals, thermal spray technology is adopted. This study aims to investigate and study the effect of hot corrosion behaviour of carbon nanotube (CNT)-reinforced ZrO2-Y2O3 composite coatings on T-91 boiler tube steel in a molten salt environment at 900 °C for 50 cycles. Design/methodology/approach A plasma spray technique was used for development of the coatings. The samples were exposed to hot corrosion in a silicon tube furnace at 900 °C for 50 cycles. After testing, the test coupons were analysed by X-ray diffraction, scanning electron microscopy/energy dispersive spectroscopy and cross-sectional analysis techniques to aid understanding the kinetics of the corrosion reaction. Findings CNT-based reinforced coatings showed lower weight gain along with the formation of protective oxide scales during the experimentation. Improvement in protection against hot corrosion was observed with increase in CNT content in the coating matrix. Originality/value It is pertinent to mention here that the high temperature behaviour of CNT-reinforced ZrO2-Y2O3 composite on T-91 steel at 900°C temperature in molten salt environment has never been studied. Thus, the present research was conducted to provide useful results for the application of CNT-reinforced composite coatings at elevated temperature.

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“…These theories mainly indicated that the rare earth elements were enriched at the grain boundaries, thereby prevented the diffusion of anions and cations [14,16]. At the same time, the adhesion of the oxides could be increased during the high temperature oxidation process, and reduced the oxidation rate [15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

“…For example, Liang et al [14] studied the oxidation resistance of rare earth steel under high temperature steam conditions. This material is mainly used in ultra-supercritical boiler tubes for power plants [15]. Yan et al [16] discussed the effect of yttrium on the cyclic oxidation behaviour of HP40 heatresistant steel at 1373 K. Others have also analyzed the properties of heat-resistant steel under continuous oxidation at elevated temperatures [17,18].…”

Section: Introductionmentioning

confidence: 99%

High temperature oxidation behavior of heat resistant steel with rare earth element Ce

Wang¹,

Zheng²,

Zheng³

et al. 2020

Mater. Res. Express

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This study examined the oxidation properties of rare earth steel at high temperatures (600°C-900°C) in the air atmosphere by using Scanning Electronic Microscope (SEM) with an energy dispersive spectroscopy (EDS), x-ray diffraction analyzer (XRD) and atomic force microscopy (AFM) analysis method. High temperature oxidation experiment showed that rare earth element Ce played a very good antioxidant effect with the increasing oxidation temperature. After continuous oxidation at 600°C, 700°C, 800°C and 900°C for 150 h, the mass gain of the rare earth steel were 1.25 mg cm −2 , 2.41 mg cm −2 , 12.34 mg cm −2 , and 13.37 mg cm −2 , respectively. In comparison, the matrix steel under the same conditions were 1.31 mg cm −2 , 2.94 mg cm −2 , 13.98 mg cm −2 , and 15.63 mg cm −2 , respectively. AFM features of the oxidized surface confirmed that the rare earth element Ce could inhibit the growth rate of the oxide in the early stage of oxidation, and preferentially promote the formation of the spinel oxide. The surface-dense spinel oxide (Fe, Cr, Ni, Mn) 3 O 4 , the enrichment of Cr-containing layer in the middle, and the formation of the Si-rich oxide in the inner layer all affected the high-temperature oxidation resistance of the rare earth steel.

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High temperature oxidation in boiler environment of chromized steel

Cited by 12 publications

References 10 publications

Application of Plants Extracts as Green Corrosion Inhibitors for Steel in Concrete - A review

Application of Plants Extracts as Green Corrosion Inhibitors for Steel in Concrete - A review

Hot corrosion behaviour of CNT-reinforced ZrO₂-Y₂O₃ composite coatings on boiler tube steel at 900°C

High temperature oxidation behavior of heat resistant steel with rare earth element Ce

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High temperature oxidation in boiler environment of chromized steel

Cited by 12 publications

References 10 publications

Application of Plants Extracts as Green Corrosion Inhibitors for Steel in Concrete - A review

Application of Plants Extracts as Green Corrosion Inhibitors for Steel in Concrete - A review

Hot corrosion behaviour of CNT-reinforced ZrO2-Y2O3 composite coatings on boiler tube steel at 900°C

High temperature oxidation behavior of heat resistant steel with rare earth element Ce

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Product

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Hot corrosion behaviour of CNT-reinforced ZrO₂-Y₂O₃ composite coatings on boiler tube steel at 900°C