Microstructure and oxidation resistance of aluminide layer produced on Inconel 100 nickel alloy by CVD method

Sitek, Ryszard; Bolek, Tomasz; Dobosz, Romuald; Płociński, T.; Mizera, J.

doi:10.1016/j.surfcoat.2016.07.072

Cited by 18 publications

(3 citation statements)

References 22 publications

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“…As for the same volume of graphite, when the graphite morphologies are respectively globular, vermicular, and flake, the interface areas vary from small to large. The rate of oxygen permeation into the inner layer of globular, vermicular, and flake graphite cast iron gradually increases [21,22,23,24,25]. The oxidation rate similarly increases.…”

Section: Resultsmentioning

confidence: 99%

Research on the Oxidation Mechanism of Vermicular Graphite Cast Iron

Guo

Yang

Guo³

et al. 2019

Materials

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The oxidation mechanism of vermicular graphite cast iron was studied. The oxidation reaction starts from graphites and diffused slowly. Graphites in vermicular graphite are interconnected, coral-like clusters, providing the main oxidation core and channel. The worm-like graphites on the surface are mostly oxidized and form oxide affected zones. The oxide films are composed of a loose oxide layer with the phases of Fe3O4, Fe2O3, and FeO, and a dense passivation layer with FeO and Fe2SiO4. After oxidation, pearlites in the vermicular graphite cast iron are decomposed into ferrite and cementite at high temperatures.

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Section: Resultsmentioning

confidence: 99%

Research on the Oxidation Mechanism of Vermicular Graphite Cast Iron

Guo

Yang

Guo³

et al. 2019

Materials

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“…Cr preferentially reacts with O to generate a structurally dense Cr 2 O 3 oxide scale, which avoids further oxidation of the superalloy [ 11 ]. Studies have shown [ 12 , 13 , 14 ] that the oxidation resistance of superalloys is related to the formation of continuous Al 2 O 3 or Cr 2 O 3 oxide layers. The relatively dense structure of these oxide layers can significantly reduce the diffusion rate of various elements, thus reducing the oxidation rate.…”

Section: Introductionmentioning

confidence: 99%

Effect of Yttrium Additions on the High-Temperature Oxidation Behavior of GH4169 Ni-Based Superalloy

Wang,

Liu,

Yang

et al. 2024

Materials

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The effect of the active element yttrium and its content on the oxidation behavior of GH4169 Ni-based superalloy at extreme temperature was studied by isothermal oxidation experiments. The results show that the oxide scale of GH4169 alloy presents a multi-layer structure, in which the continuous and dense Cr2O3 oxide layer is located in the subouter layer (II layer) and the continuous Nb-rich layer is in the subinner layer (III layer). These layers can inhibit the diffusion of oxygen and alloying elements, preventing the further oxidation of the alloy. The appropriate addition of yttrium can promote the selective oxidation of Cr element, reduce the thickness of the oxide scale and the oxidation rate of the alloy, inhibit the formation of voids at the interface of the oxide scale/alloy matrix, improve the resistance of the alloy to spalling as well as the adhesion of the oxide scale, and improve the high-temperature oxidation resistance of the alloy. Of those tested, the alloy containing 0.04 wt.%Y has the lowest oxidation weight gain, the slowest oxidation rate, and less oxide scale spalling. Based on this, the effect of yttrium on the high-temperature oxidation behavior of GH4169 Ni-based superalloy and its mechanism were revealed.

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“…The high temperature oxidation and corrosion resistance of aluminide coating can be enhanced by adding many elements (Montero et al, 2013;Zhao and Zhou, 2014;Yang et al, 2016;Huang et al, 2020). The common methods for preparing aluminide coating are thermal spray, pack cementation, chemical vapor deposition, and hot-dipping (Hu et al, 2006;Zhang et al, 2012;Cheng et al, 2013;Shirvani et al, 2013;Xu et al, 2015;Sitek et al, 2016). Comparatively, the pack cementation process is simple and the cost is low, so it is suitable for specimens with higher requirements for bonding strength of the coating (Yuwen and Zhou, 2016;Yu et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Influence of Pre-Oxidation on High Temperature Oxidation and Corrosion Behavior of Ni-Based Aluminide Coating in Na2SO4 Salt at 1050°C

Zhang

Song

et al. 2021

Front. Mater.

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Aluminide coating is prepared on K438 Ni-based superalloy by pack cementation. The hot corrosion test of as-received and pre-oxidation aluminide coating in Na2SO4 salt are carried out at 1050°C. The coating morphologies, phase composition, and corrosion products are characterized by XRD, SEM, EDS, and TEM. The conclusion is that the pre-oxidation aluminide coating has excellent hot corrosion properties. After hot corrosion, the oxide scale of pre-oxidation aluminide coating is the thinnest and maintains good integrity. However, the oxide scale of as-received aluminide coating fluctuates greatly and there are corrosion cavities. CrS is formed in the alloy immediately below the oxide scale for the two coating systems.

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Microstructure and oxidation resistance of aluminide layer produced on Inconel 100 nickel alloy by CVD method

Cited by 18 publications

References 22 publications

Research on the Oxidation Mechanism of Vermicular Graphite Cast Iron

Research on the Oxidation Mechanism of Vermicular Graphite Cast Iron

Effect of Yttrium Additions on the High-Temperature Oxidation Behavior of GH4169 Ni-Based Superalloy

Influence of Pre-Oxidation on High Temperature Oxidation and Corrosion Behavior of Ni-Based Aluminide Coating in Na2SO4 Salt at 1050°C

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