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Mechanical and Electrochemical Behavior of CNT-Reinforced YSZ Coating

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Abstract

Thermally sprayed ceramic coatings with varied weight percentages of carbon nanotube (CNT) reinforcement were examined. AISI 1020 steel was coated with yttria-stabilized zirconia (ZrO2 + 8% Y2O3) using the atmospheric plasma spraying (APS) method. The study examined the CNT dispersion in the coating microstructure and evaluated the porosity, bond strength, and corrosion resistance of the coating. In addition, the coating thicknesses were measured. The coatings were characterized using a variety of techniques, including optical microscopy, scanning electron microscopy, image analysis, bond strength testing, and corrosion analysis. According to the findings, adding CNTs to the coatings improved their mechanical characteristics, particularly their hardness and wear resistance. Notably, the best levels of hardness and wear resistance were seen in coatings with a 5 percent CNT reinforcement. Additionally, the coatings' corrosion resistance was enhanced by the inclusion of CNTs. The results of this work show that the mechanical and corrosion properties of thermally sprayed ceramic coatings can be successfully improved by the inclusion of CNTs. This means that these CNT-reinforced coatings have a lot of potential for a variety of applications, such as wear-resistant, corrosion-resistant, and thermal barrier coatings.

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All data generated or analyzed during this study are included in this published article.

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The authors declare that no funds, grants, or other support were received during the preparation of this manuscript.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Marri Laxman Reddy Institute of Technology and Management, Hyderabad, 500043, India

    Chaithanya Kalangi

  2. Department of Mechanical Engineering, Institute of Aeronautical Engineering, Hyderabad, 500043, India

    Mahidhar Reddy Veeram

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  1. Chaithanya Kalangi
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  2. Mahidhar Reddy Veeram
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Contributions

All authors contributed to the study conception and design. Material preparation, data collection, and analysis were performed by CK and MRV. The first draft of the manuscript was written by CK, and all authors commented on the previous versions of the manuscript. All authors read and approved the final manuscript.

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Correspondence to Chaithanya Kalangi.

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Kalangi, C., Veeram, M.R. Mechanical and Electrochemical Behavior of CNT-Reinforced YSZ Coating. High Temperature Corrosion of mater. 101, 309–330 (2024). https://doi.org/10.1007/s11085-024-10223-4

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