Oxidation Behavior of Overlay NiCoCrAlY and Diffusion Aluminide Coatings Deposited on a Directionally Solidified Nickel-Based Superalloy: A Comparative Study

Hosseini, Yasamin; Kermanpur, A.; Ashrafizadeh, F.; Keyvani, A.

doi:10.1007/s11837-022-05575-8

Cited by 9 publications

(3 citation statements)

References 43 publications

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“…Infrastructure assets, such as bridges, pipelines, and power plants, are susceptible to increased deterioration under these circumstances. The need for protective measures: under order to effectively combat the effects of corrosion and oxidation under harsh conditions, it is essential to develop novel solutions that can prolong the durability of materials without compromising their structural and functional integrity [7]. Protective coatings, namely those composed of super alloys, have emerged as a viable approach to mitigate the detrimental consequences of these degradation phenomena.…”

Section: Introductionmentioning

confidence: 99%

Super Alloy Coatings for Enhanced Corrosion and Oxidation Resistance in Extreme Environments

Abhishek,

Anupama,

Singh

et al. 2023

E3S Web Conf.

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The use of super alloy coatings is an innovative method for enhancing the durability of materials against the detrimental effects of corrosion and oxidation, especially in areas with severe circumstances. This study explores the forefront of super alloy coatings, examining their significant role in minimising the adverse effects of corrosive and oxidative processes on materials working in harsh conditions. This study highlights the transformative potential of super alloy coatings in extending the lifespan and enhancing the reliability of critical components. It achieves this by presenting a comprehensive overview of the fundamental principles, fabrication methodologies, and practical applications associated with these coatings. As many sectors navigate more difficult environments, the effective incorporation of advanced coatings presents a potential direction, advancing the field of materials science and guaranteeing consistent performance in the presence of significant challenges. The emergence of super alloy coatings represents a significant transformation in the field of corrosion and oxidation control, providing a robust defence against the persistent deteriorating factors seen in highly challenging settings. The combination of complex production procedures and superior material qualities empowers these coatings to strengthen materials, therefore assuring their durability.

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Section: Introductionmentioning

confidence: 99%

Super Alloy Coatings for Enhanced Corrosion and Oxidation Resistance in Extreme Environments

Abhishek,

Anupama,

Singh

et al. 2023

E3S Web Conf.

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show abstract

“…This significantly increases the cost of operating the aircraft and reduces the safety of flights. The analyzes carried out by the authors of this article show that the structure and thermophysical properties of the protective coating must be adapted to the given alloy from which the blade is made [9,[21][22][23]. Therefore, efforts should be made to achieve the best possible convergence of the structure and thermophysical properties of the protective coating and the base material of the blade.…”

Section: Introductionmentioning

confidence: 99%

“…Due to the presence of a significant amount of Cr in it, it protects the base material of the blade against oxidation and high-temperature corrosion. The advantages of the NiCoCrAlY layer are that it is possible to shape the content of aluminum and chromium and other elements in it and that its properties do not depend on the chemical composition of the blade material [22][23][24][25][26]. This layer is characterized by a low transition temperature from the brittle state to the plastic state, amounting to 473-573 K. The second layer, the outer one, was a diffusion thermal layer of the NiAl type with low thermal conductivity.…”

Section: Introductionmentioning

confidence: 99%

Two-Layer Heat-Resistant Protective Coatings for Turbine Engine Blades

Ułanowicz

Dudziński

2023

Coatings

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One of the most important factors for increasing the durability of turbine engines is the use of turbine blades characterized by the best possible convergence of the thermophysical properties of the protective coating and the base material of the blade. The aim of the research was to evaluate the heat resistance of prototype two-layer protective coatings applied to turbine blades. The inner layer of the coating enables shaping the thermophysical convergence of the coating and the base material of the blade. The outer layer is used for thermal protection of the blade material. The inner layer was applied to the blade by plasma spraying, and the outer layer was diffusion aluminized for the first type by a non-contact gas method, for the second type by a slurry method, and for the third type, the ceramics were plasma sprayed. Turbine blades with prototype coatings were subjected to an engine test, and after the test, macro- and microstructure tests were performed. The tests showed that the prototype protective coating with an inner layer of the MCrAlY type applied to the blade by plasma spraying and an outer layer aluminized by diffusion by a non-contact gas method protects the blade material against oxidation and ensures its thermal insulation.

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Characterization and Early-Stage Oxidation Behavior of CoNiCrAlY/Nano-Al2O3 Composite Coatings Using Satellited Powders Deposited by HVOF and LPPS Processes

Zamani,

Valefi

2023

J Therm Spray Tech

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Oxidation Behavior of Overlay NiCoCrAlY and Diffusion Aluminide Coatings Deposited on a Directionally Solidified Nickel-Based Superalloy: A Comparative Study

Cited by 9 publications

References 43 publications

Super Alloy Coatings for Enhanced Corrosion and Oxidation Resistance in Extreme Environments

Super Alloy Coatings for Enhanced Corrosion and Oxidation Resistance in Extreme Environments

Two-Layer Heat-Resistant Protective Coatings for Turbine Engine Blades

Characterization and Early-Stage Oxidation Behavior of CoNiCrAlY/Nano-Al2O3 Composite Coatings Using Satellited Powders Deposited by HVOF and LPPS Processes

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