Synthesis and characterizations of modified Y2O3 nanoparticles aluminide coating on nickel alloy IN625

Jawhar, Mustafa; Aziz, Israa A.; Abbass, Muna Khethier

doi:10.1063/5.0107713

Cited by 2 publications

(4 citation statements)

References 7 publications

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“…According to EDS analysis as seen in Figures ( 3 and 5), the coating had a gradient distribution across it and contained all of the elements in the substrate alloy in relative proportions matching their concentrations in the alloy. Due to the dilution of aluminum in the coating, these elements' absolute concentrations were lower than those of the substrate [21]. Below the coating's substrate, chromium was found in significant amounts.…”

Section: Eds Analysismentioning

confidence: 95%

“…The findings show that the coating's hardness is increasing in certain areas and decreasing in others. This is a result of the formation of relatively brittle phases caused by the saturation of those regions with aluminum at high temperatures [21].…”

Section: Hardness Measurementmentioning

confidence: 99%

“…A plot of weight change vs. square root of time gives a line, the slope is the parabolic rate constant in units of ( mg / Cm2)/h1/2). The Kp value is then squared to give Kp in units of (mg2/ Cm4)/h), as in the following expression [21] :…”

Section: Oxidation Behaviormentioning

confidence: 99%

See 2 more Smart Citations

Oxidation Behavior of Inconel 625 Alloy through Aliminide Diffusion Method Using Y2O3 and ZrO2 Nanoparticles

Jawhar

Abbass

Aziz

et al. 2023

ETJ

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Nano Y 2 O 3 and ZrO 2 particles were used in diffusion coating by the single-step pack cementation process • Effects of Y 2 O 3 and ZrO 2 on mechanical properties and oxidation resistance of coated Inconel 625 superalloy were analyzed • Microstructure of coated IN625 superalloy consists of an outer layer, a transition layer, and an interdiffusion zone • Adding Y 2 O 3 and ZrO 2 to the Cr-Comodified aluminide coating might increase the oxidation resistance The pack cementation process was used to create a type of Y 2 O 3 +ZrO 2 doped Cr-Co-modified aluminide coating that takes advantage of the synergistic effects of nano Y 2 O 3 and ZrO 2 particles. A Ni-based superalloy (type IN625 type) was coated with pack powder containing: Al as a source of aluminum; Cr as a source of chromium, Co as a source of cobalt, NH 4 Cl as a source of activator; nano Y 2 O 3 -ZrO 2 as a source of reactive element oxide; and Al 2 O 3 as a source of filler metal. The process was carried out for 6 hours at 1100 o C temperature. The microstructure characterization of the coating was performed by SEM, EDS, and XRD. It was found that the cross-section of the coating obtained was uniform and free from cracking. The maximum hardness value was found at the outer layer (997H.V.) and decreased toward the core sample core (366H.V.). The coating's microstructure consists of an outer layer, a transition layer, and an IDZ. The average coating thickness is 132.37, 36.11, and 37.65µm for the outer layer, transition layer, and IDZ, respectively. The XRD analysis of the coating system after 6 hours at 1100 o C revealed phases formed by AlNi 3 , CoO, Al-Cr-Co, and Cr 4 NiZr. The n (growth rate time constant) and Kp (parabolic rate constant) values increase with increased oxidation temperature. It was found that adding Zr and Y to the Cr-Co-modified aluminide coating might increase the oxidation resistance.

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Section: Eds Analysismentioning

confidence: 95%

Section: Hardness Measurementmentioning

confidence: 99%

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Oxidation Behavior of Inconel 625 Alloy through Aliminide Diffusion Method Using Y2O3 and ZrO2 Nanoparticles

Jawhar

Abbass

Aziz

et al. 2023

ETJ

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“…Among them, surface coating technology is regarded as one of the most effective methods, because it can significantly improve the corrosion resistance while maintaining the outstanding mechanical properties of the cladding tube [10,11]. Up to now, the corrosion resistance of metal coating [5,12,13] and ceramic coating [14][15][16] has been investigated. Especially, FeCrAl-based coatings have been regarded as one of the most promising candidates due to their excellent LBE corrosion resistance and outstanding bonding strength with the steel cladding tube [17].…”

Section: Introductionmentioning

confidence: 99%

Investigation and evaluation of high-temperature lead-bismuth eutectic (LBE) corrosion resistance and compression performance of the FeCrAl-based coatings

Zhang,

Qiu,

Zhou

et al. 2024

Mater. Res. Express

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The high-temperature lead-bismuth eutectic (LBE) corrosion resistance and ring compression performance of the Fe15Cr11Al2Si, Fe15Cr11Al0.5Y, and Fe15Cr11Al2Si0.5Y coatings were investigated. Even if the corrosion test temperature reaches 800 ℃, all these coatings can effectively protect the steel cladding tube. After the corrosion test temperature exceeded 660 ℃, an obvious Al-rich oxide layer was formed on the surface of the coating, and Al element enrichment occurred at the interface between the coating and the substrate. After the corrosion test at 800 ℃, holes appeared in the thick interface layer of the Fe15Cr11Al2Si0.5Y coating. The Fe15Cr11Al2Si coating cracked after the ring compression test with a deformation rate of 3%, and the coating peeled off after the deformation rate reached 5%. When the deformation rate reached 5%, there was still no cracking in the Fe15Cr11Al0.5Y coating. When the deformation rate reached 30%, the coating cracked, but the cracked coating was still tightly bonded with the substrate. The Fe15Cr11Al2Si0.5Y coating has the worst compression performance, even if the deformation rate is 1%, the coating still peels off obviously. The underlying mechanism for the evolution of corrosion resistance and compression performance was discussed.

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Synthesis and characterizations of modified Y2O3 nanoparticles aluminide coating on nickel alloy IN625

Cited by 2 publications

References 7 publications

Oxidation Behavior of Inconel 625 Alloy through Aliminide Diffusion Method Using Y2O3 and ZrO2 Nanoparticles

Oxidation Behavior of Inconel 625 Alloy through Aliminide Diffusion Method Using Y2O3 and ZrO2 Nanoparticles

Investigation and evaluation of high-temperature lead-bismuth eutectic (LBE) corrosion resistance and compression performance of the FeCrAl-based coatings

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