Comparative evaluation of performance of cold sprayed and bare N06601 superalloy in medical waste incinerator at 900 °C

Singh, Harminder; Khosla, Henna

doi:10.1016/j.matchemphys.2017.07.060

Cited by 9 publications

(8 citation statements)

References 40 publications

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“…210 The degradation rate of cold-sprayed NiCrAlY coating was estimated to be only 0.9 mm/year. The surface modification of tubes by cold spray process was also conducted by Singh et al, 171,185 and the average temperature of flue gas was 900 °C in the waste incinerator. The results of the 1000 h experiment showed that the highly corrosive "active oxidation" reactions were not observed in the NiCr-based coatings, which resisted the penetration of corrosive species significantly.…”

Section: Application Of Corrosion-resistantmentioning

confidence: 99%

“…In order to know more about the research progress of anticorrosion coatings, the detailed statistical classification of the adopted techniques in the literature were carried out. The statistical data were derived from 94 kinds of coatings in more than 60 literature contributions, − all of which focused on the corrosion-resistant coatings in the range of 400–900 °C. Therefore, it can be considered that these coatings have the potential for corrosion resistance in power plants.…”

Section: Corrosion-resistant Coatings To Protect Heat Transfer Tubesmentioning

confidence: 99%

“…Relative proportions of various technologies used in bench-scale corrosion resistance, on the basis of 94 kinds of coatings in more than 60 literature contributions. − …”

Section: Corrosion-resistant Coatings To Protect Heat Transfer Tubesmentioning

confidence: 99%

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Application of Coatings to Alleviate Fireside Corrosion on Heat Transfer Tubes during the Combustion of Low-Grade Solid Fuels: A Review

et al. 2020

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To address the energy and environmental issues related to the use of traditional fossil fuels, the thermal utilization of low-grade solid fuels such as low-rank coal, biomass, and municipal solid waste has gradually attracted much attention. During the combustion of the low-grade solid fuels, one of the major operation problems is the fireside corrosion on heat transfer tubes, which easily causes the frequent replacement of tubes and shutdown of boilers, largely reducing the energy and economic performances. In this review, the causes and mechanisms of corrosion were first clarified to provide a basis for mitigating the losses induced by the fireside corrosion, followed by the introduction of the preparation and properties of coatings, which show great potential to resist the invasion of corrosive species by attaching the reinforced surface to the tubes. To demonstrate the feasibility of the coating for hightemperature corrosion resistance, 94 kinds of coatings in more than 60 literature contributions were statistically analyzed. It was found that over 90% of anticorrosion coatings were prepared from thermal spraying techniques, and approximately three-quarters of the anticorrosion coatings were made of NiCr-based alloys. Many methods were reported to evaluate the corrosion resistance of coatings in literature, including mass gain/loss method, ash deposition method, contact angle method, and ash adhesion method. As for exploring the anticorrosion mechanisms of coatings, it was found that the protection was achieved by the formation of dense oxide scale, such as Cr 2 O 3 , NiO, MoO 2 , and so on. Furthermore, the application status of coatings in power plants was also summarized. According to the pilot-scale tests listed in literature, the obvious similarity is that the adopted technologies were mainly High velocity oxy-fuel (HVOF) spraying or cold spraying techniques, with almost all of the coated materials being NiCr-based alloys as well as a small portion of Fe/Co-based alloys. This indicates that the NiCr-based coatings prepared by HVOF spraying technique have been widely applied in power plants. In order to promote the large-scale application of anticorrosion coatings, it is prospective to focus on several key research aspects: (1) predicting the corrosion conditions from fuel compositions, (2) developing costeffective coatings, (3) establishing the systematic evaluation methods by laboratory tests, (4) achieving in-depth understanding of the anticorrosion mechanisms, and (5) conducting a comprehensive economic analysis.

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Section: Application Of Corrosion-resistantmentioning

confidence: 99%

Section: Corrosion-resistant Coatings To Protect Heat Transfer Tubesmentioning

confidence: 99%

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Application of Coatings to Alleviate Fireside Corrosion on Heat Transfer Tubes during the Combustion of Low-Grade Solid Fuels: A Review

et al. 2020

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“…XRD has been widely employed for high-temperature corrosion-resistant coatings (Ref [188][189][190][191]. XRD is very powerful for identifying crystalline compounds in, e.g., corrosion products.…”

Section: X-ray Diffractometry (Xrd)mentioning

confidence: 99%

Advances in Corrosion-Resistant Thermal Spray Coatings for Renewable Energy Power Plants: Part II—Effect of Environment and Outlook

2019

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High-temperature corrosion of critical components such as water walls and superheater tubes in biomass/ waste-fired boilers is a major challenge. A dense and defect-free thermal spray coating has been shown to be promising to achieve a high electrical/thermal efficiency in power plants. The field of thermal spraying and quality of coatings have been progressively evolving; therefore, a critical assessment of our understanding of the efficacy of coatings in increasingly aggressive operating environments of the power plants can be highly educative. The effects of composition and microstructure on high-temperature corrosion behavior of the coatings were discussed in the first part of the review. The present paper that is the second part of the review covers the emerging research field of performance assessment of thermal spray coatings in harsh corrosion-prone environments and provides a comprehensive overview of the underlying high-temperature corrosion mechanisms that lead to the damage of exposed coatings. The application of contemporary analytical methods for better understanding of the behavior of corrosion-resistant coatings is also discussed. A discussion based on an exhaustive review of the literature provides an unbiased commentary on the advanced accomplishments and some outstanding issues in the field that warrant further research. An assessment of the current status of the field, the gaps in the scientific understanding, and the research needs for the expansion of thermal spray coatings for high-temperature corrosion applications is also provided.

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“…Especially in China, the medical service consumption of NaCl is higher than that in other countries. Table 1 lists the chemical composition of MWIFA and MSWIFA [12][13][14][15][16][17]. The main chemical compounds in both are SiO 2 and CaO.…”

Section: High Content Of Chloridesmentioning

confidence: 99%

Characteristics and Treatment Methods of Medical Waste Incinerator Fly Ash: A Review

et al. 2018

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Medical waste incinerator fly ash (MWIFA) is quite different from municipal solid waste incinerator fly ash (MSWIFA) due to its special characteristics of high levels of chlorines, dioxins, carbon constituents, and heavy metals, which may cause irreversible harm to environment and human beings if managed improperly. However, treatment of MWIFA has rarely been specifically mentioned. In this review, various treatment techniques for MSWIFA, and their merits, demerits, applicability, and limitations for MWIFA are reviewed. Natural properties of MWIFA including the high contents of chlorine and carbonaceous matter that might affect the treatment effects of MWIFA are also depicted. Finally, several commendatory and feasible technologies such as roasting, residual carbon melting, the mechanochemical technique, flotation, and microwave treatment are recommended after an overall consideration of the special characteristics of MWIFA, balancing environmental, technological, economical information.

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Comparative evaluation of performance of cold sprayed and bare N06601 superalloy in medical waste incinerator at 900 °C

Cited by 9 publications

References 40 publications

Application of Coatings to Alleviate Fireside Corrosion on Heat Transfer Tubes during the Combustion of Low-Grade Solid Fuels: A Review

Application of Coatings to Alleviate Fireside Corrosion on Heat Transfer Tubes during the Combustion of Low-Grade Solid Fuels: A Review

Advances in Corrosion-Resistant Thermal Spray Coatings for Renewable Energy Power Plants: Part II—Effect of Environment and Outlook

Characteristics and Treatment Methods of Medical Waste Incinerator Fly Ash: A Review

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