Microstructure and oxidation of a Ni–Al based intermetallic coating formation on a Monel-400 alloy

Tuba Yener; Alperen Refik Bilal Özsarı; Kadir Mert Döleker; Azmi Erdoğan; Suayb Çağri Yener

doi:10.1515/mt-2024-0038

Article

Microstructure and oxidation of a Ni–Al based intermetallic coating formation on a Monel-400 alloy

Tuba Yener
Dr. Tuba Yener graduated from Sakarya University, Department of Metallurgical and Materials Engineering, Turkey. She received his MSc and PhD degrees from Sakarya University, Department of Metallurgical and Materials Engineering. He is currently working as Assoc. Prof. Dr. at Sakarya University, Faculty of Engineering, Metallurgy and Materials Engineering. Her interests are in the intermetallic materials, materials characterization and surface properties of Materials.
, Alperen Refik Bilal Özsarı
Alperen Refik Bilal Özsarı graduated from Karabuk University, department of Metallurgy and Materials Engineering, Turkey. He is currently a master student at Sakarya University, and his thesis is on termoreactive diffusion coating on Monel 400 Alloy. Özsarı is also working as Uşak Provincial Representative at Turkish Technology Team Foundation (T3 Foundation).
, Kadir Mert Döleker
Dr. Kadir Mert Döleker graduated from Sakarya University, Department of Metallurgical and Materials Engineering, Turkey. He received his MSc degree from Bartın University, Department of Metallurgical and Materials Engineering. He is currently working as Assoc. Prof. Dr. at 19 Mayis University, Faculty of Engineering, Metallurgy and Materials Engineering. His interests are on oxidation properties of materials, materials characterization and surface properties of Materials.
, Azmi Erdoğan
Dr. Azmi Erdoğan graduated from Bartin University, Department of Metallurgical and Materials Engineering, Turkey. He received his MSc degree from Bartin Univesity and PhD degrees from Sakarya University, Department of Metallurgical and Materials Engineering. He is currently working as Assoc. Prof. Dr. at Bartin University, Faculty of Engineering, Materials Division. His interests are in the metallic materials, materials characterization and wear.
and Suayb Çağri Yener
Dr. Suayb Çağri Yener graduated from Sakarya University, Department of Electric and Electronic Engineering, Turkey. He received his MSc and PhD degrees from Istanbul Technical University, Department of Electric and Electronic Engineering. He is currently working as Assoc. Prof. Dr. at Sakarya University, Faculty of Engineering, Electric Division. Her interests are electromagnetic fields, Membristors, Mathematical Modelling.

Published/Copyright: July 10, 2024

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From the journal Materials Testing Volume 66 Issue 8

Abstract

The purpose of this work was to examine how the microstructure and oxidation characteristics of Monel 400 Alloy were affected by the low-temperature aluminizing method. Monel 400 alloy was subjected to a low-temperature aluminizing procedure for 2 and 4 h at 600, 650, and 700 °C. Pure aluminum powder was used as the source of aluminum deposition to prepare the packs for the process. The activator and inert filler utilized were ammonium chloride (NH₄Cl) and Al₂O₃ powder, respectively. The coating surfaces were characterized using energy dispersive spectroscopy (EDS) and scanning electron microscopy (SEM), as well as X-ray diffraction (XRD) analysis. It was discovered that the through-thickness variance in the layer microstructure varied between 4 and 30 µm, and that it increased with greater process temperatures and times. The coating layer hardness grew to 800 HV after the deposition process, whereas the matrix hardness remained at 200 HVN. Furthermore, the sample that was coated at 600 °C for 4 h was exposed to oxidation at 750–800 and 850 °C. It was found that the oxidation kinetics were 176 kJ/mol.

Keywords: Monel 400; aluminizing; oxidation; kinetics; TG

Corresponding author: Tuba Yener, Department of Metallurgy and Materials Engineering, Faculty of Engineering, Sakarya University, Sakarya 54050, Türkiye, E-mail: tcerezci@sakarya.edu.tr

About the authors

Tuba Yener

Dr. Tuba Yener graduated from Sakarya University, Department of Metallurgical and Materials Engineering, Turkey. She received his MSc and PhD degrees from Sakarya University, Department of Metallurgical and Materials Engineering. He is currently working as Assoc. Prof. Dr. at Sakarya University, Faculty of Engineering, Metallurgy and Materials Engineering. Her interests are in the intermetallic materials, materials characterization and surface properties of Materials.

Alperen Refik Bilal Özsarı

Alperen Refik Bilal Özsarı graduated from Karabuk University, department of Metallurgy and Materials Engineering, Turkey. He is currently a master student at Sakarya University, and his thesis is on termoreactive diffusion coating on Monel 400 Alloy. Özsarı is also working as Uşak Provincial Representative at Turkish Technology Team Foundation (T3 Foundation).

Kadir Mert Döleker

Dr. Kadir Mert Döleker graduated from Sakarya University, Department of Metallurgical and Materials Engineering, Turkey. He received his MSc degree from Bartın University, Department of Metallurgical and Materials Engineering. He is currently working as Assoc. Prof. Dr. at 19 Mayis University, Faculty of Engineering, Metallurgy and Materials Engineering. His interests are on oxidation properties of materials, materials characterization and surface properties of Materials.

Azmi Erdoğan

Dr. Azmi Erdoğan graduated from Bartin University, Department of Metallurgical and Materials Engineering, Turkey. He received his MSc degree from Bartin Univesity and PhD degrees from Sakarya University, Department of Metallurgical and Materials Engineering. He is currently working as Assoc. Prof. Dr. at Bartin University, Faculty of Engineering, Materials Division. His interests are in the metallic materials, materials characterization and wear.

Suayb Çağri Yener

Dr. Suayb Çağri Yener graduated from Sakarya University, Department of Electric and Electronic Engineering, Turkey. He received his MSc and PhD degrees from Istanbul Technical University, Department of Electric and Electronic Engineering. He is currently working as Assoc. Prof. Dr. at Sakarya University, Faculty of Engineering, Electric Division. Her interests are electromagnetic fields, Membristors, Mathematical Modelling.

Acknowledgments

The authors are thankful to Murat Kazanci and Fuat Kayis (Sakarya Uni., Türkiye) for their technical support to this study.

Research ethics: Not applicable.
Author contributions: The authors have accepted responsibility for the entire content of this manuscript and approved its submission.
Competing interests: The authors state no conflict of interest.
Research funding: None declared.
Data availability: The raw data can be obtained on request from the corresponding author.

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Published Online: 2024-07-10

Published in Print: 2024-08-27

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Articles in the same Issue

https://doi.org/10.1515/mt-2024-0038

Keywords for this article

Monel 400; aluminizing; oxidation; kinetics; TG