Improvement of Oxidation Resistance of Inconel 600 Alloy by Pack Cementation Process

Alkadir, Israa A.; Jawhar, Mustafa Nash at

doi:10.4172/0976-4860.1000208

Cited by 3 publications

(4 citation statements)

References 6 publications

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“…The oxidation kinetic does not follow a straightforward parabolic trend when the value of n is more or less than 0.5, and this suggests a quicker or slower oxidation rate. In addition to the interpretation given above, the experimental setting and other factors, such as weight measurement and area, may have a significant impact on thick cases [18].…”

Section: Oxidation Behaviormentioning

confidence: 99%

“…However, because chromium is less soluble in the aluminum-nickel complex, this area has more of an element than the transition region because it is added to the packed powder [18]. Figure 4 represent the XRD analysis of the coating system at 1100 o C for 6hr with different concentration of nano Y 2 O 3 and ZrO 2 particle (0.5%).…”

Section: Coating Microstructurementioning

confidence: 99%

“…The step of restricting the total rate of reactive oxidation rate data is typically employed as the basis for a quantitative description of oxidation behavior, and oxidative kinetics studies offer useful information about the oxidation mechanism [18]. Weight gain was recorded to determine the kinetic mobility in dry air at temperatures (850,950 and 1050 o C) for up to 50hr in a 5hr cycle.…”

Section: Oxidation Behaviormentioning

confidence: 99%

“…Primary motility is swift, but over extended periods, the particular weight-change rate steadily declines. By looking at the fixed time growth rate or the value of n, which is obtained in the following equation, oxidation kinetics can be predicated [18]:…”

Section: Oxidation Behaviormentioning

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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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: Oxidation Behaviormentioning

confidence: 99%

Section: Coating Microstructurementioning

confidence: 99%

Section: Oxidation Behaviormentioning

confidence: 99%

Section: Oxidation Behaviormentioning

confidence: 99%

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