Experimental and thermodynamic investigations on the chlorine-induced corrosion of HVOF thermal sprayed NiAl coatings and 304 stainless steels at 700 °C

Bai, Mingwen; Reddy, Liam; Hussain, Tanvir

doi:10.1016/j.corsci.2018.02.047

Cited by 68 publications

(21 citation statements)

References 74 publications

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“…Thermodynamic calculation of oxidation products as a function of effective partial pressures of O 2 at 900°C was carried out by Thermo-Calc Ò software (Version 2017b) with TCS Ni-based superalloys (TCNi8.1) database following CALPHAD (Computer Coupling of Phase Diagrams and Thermochemistry) ( Ref 27,28). The use of Thermo-Calc Ò on alumina-forming and chromia-forming alloys systems has been validated by our previous work (Ref 29,30) and others (Ref [31][32][33][34][35][36][37][38].…”

Section: Thermo-calc ò Calculationmentioning

confidence: 99%

Preparation of MCrAlY–Al2O3 Composite Coatings with Enhanced Oxidation Resistance through a Novel Powder Manufacturing Process

et al. 2019

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MCrAlY-Al 2 O 3 composite coatings were prepared by high-velocity oxygen fuel thermal spraying with bespoke composite powder feedstock for high-temperature applications. Powder processing via a suspension route was employed to achieve a fine dispersion of a-Al 2 O 3 submicron particles on the MCrAlY powder surface. This was, however, compromised by * 50% less flowability of the feedstock during spraying. Nevertheless, the novel powder manufacturing process introduced in this study has shown potential as an alternative route to prepare tailored composite powder feedstock for the production of metal matrix composites. In addition, the newly developed MCrAlY-Al 2 O 3 composite coatings exhibited superior oxidation resistance, compared to conventional MCrAlY coatings, with the formation of nearly exclusively Al 2 O 3 scale after isothermal oxidation at 900°C for 10 h. The addition of a-Al 2 O 3 particles in the MCrAlY coatings as a second phase was found to have promoted the formation of YAG oxides (Y x Al y O z) during spraying and also accelerated the outwards diffusion of Al, which resulted in enhanced oxidation resistance.

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Section: Thermo-calc ò Calculationmentioning

confidence: 99%

Preparation of MCrAlY–Al2O3 Composite Coatings with Enhanced Oxidation Resistance through a Novel Powder Manufacturing Process

et al. 2019

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“…However, under an air or simulated atmosphere of 600 • C, the Ni5Al coating has relatively low corrosion weight changes and corrosion product layer thickness [58,61,62]. With the increase in aluminum content, the corrosion resistance of NiAl(Ni31Al) coating has been improved under the condition in which the temperature is higher than 600 • C [24,49]. As shown in Figure 4, under the same conditions, they all show better corrosion resistance than NiCr coatings.…”

Section: Ni-based Coatingsmentioning

confidence: 98%

“…(a) Cross-sectional SEM micrograph (BSE) of the Ni5Al coating oxidized in 5% O 2 + 500 ppm HCl + N 2 for 168 h at 600 • C with KCl deposit[58]. (b) Cross-sectional BSE images of Ni31Al coating after corrosion at 700 • C for 250 h in synthetic gas with 500 ppm HCl and 10% KCl ash deposit[49].…”

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confidence: 99%

Recent Development of Corrosion Factors and Coating Applications in Biomass Firing Plants

Yuan

Liu

et al. 2020

Coatings

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Due to global warming, biomass fuels are gradually being used to replace fossil fuels. However, high-temperature biomass corrosion is a crucial issue affecting its future application. In this article, different factors affecting boiler performance are summarized from various studies to guide the optimization of boiler parameters in practical applications, such as corrosive components and boiler temperatures. Meanwhile, different coating formation methods and materials are summarized to provide better protection strategies. The potential coating materials for future research are also discussed. The addition of other elements, such as Ti, Mo, and W, has the potential to accelerate the formation of oxide layers during high-temperature corrosion and directly slow down the corrosion rate. Future studies should focus on these elements containing materials.

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“…The corrosion problems related to biomass and waste-fired boilers have been reported to be mainly caused by Cl (Ref [7][8][9][10][11]. There are three corrosion mechanisms concerning the effect of Cl which are addressed in this review, including (…”

Section: Cl-induced Corrosionmentioning

confidence: 98%

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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Experimental and thermodynamic investigations on the chlorine-induced corrosion of HVOF thermal sprayed NiAl coatings and 304 stainless steels at 700 °C

Cited by 68 publications

References 74 publications

Preparation of MCrAlY–Al2O3 Composite Coatings with Enhanced Oxidation Resistance through a Novel Powder Manufacturing Process

Preparation of MCrAlY–Al2O3 Composite Coatings with Enhanced Oxidation Resistance through a Novel Powder Manufacturing Process

Recent Development of Corrosion Factors and Coating Applications in Biomass Firing Plants

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

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Experimental and thermodynamic investigations on the chlorine-induced corrosion of HVOF thermal sprayed NiAl coatings and 304 stainless steels at 700 °C

Cited by 68 publications

References 74 publications

Preparation of MCrAlY–Al2O3 Composite Coatings with Enhanced Oxidation Resistance through a Novel Powder Manufacturing Process

Preparation of MCrAlY–Al2O3 Composite Coatings with Enhanced Oxidation Resistance through a Novel Powder Manufacturing Process

Recent Development of Corrosion Factors and Coating Applications in Biomass Firing Plants

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

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Experimental and thermodynamic investigations on the chlorine-induced corrosion of HVOF thermal sprayed NiAl coatings and 304 stainless steels at 700 °C