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Article

A New Method for Evaluating the Bond Strength of Plasma-Sprayed NiCrBSi Coatings

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School of Materials Science and Technology, Jiangsu University of Science and Technology, Zhenjiang 212003, China
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Guangxi Key Laboratory of Processing for Non-Ferrous Metals and Featured Materials, Guangxi of University, Nanning 530004, China
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Department of Material Science and Technology of Metals, Admiral Makarov National University of Shipbuilding Institute, 54025 Nikolaev, Ukraine
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School of Engineering, Edith Cowan University, 270 Joondalup Drive, Joondalup, Perth, WA 6027, Australia
*
Authors to whom correspondence should be addressed.
Academic Editors: Chang Woo Lee and Thomas Gries
Metals 2022, 12(2), 168; https://doi.org/10.3390/met12020168
Received: 5 December 2021 / Revised: 4 January 2022 / Accepted: 13 January 2022 / Published: 18 January 2022
The bond strength is a critical consideration for the plasma-sprayed NiCrBSi coatings. However, the conventional methods for testing the bond strength of NiCrBSi coatings always cost time and money. If there is a simple method that could predict the bond strength of the prepared NiCrBSi coatings without destroying the coatings, it would be significantly beneficial for industrial applications. In this work, a new method was proposed based on the total areas of the interfacial pores for the NiCrBSi coatings. The NiCrBSi coating was prepared by plasma spraying technology and the as-sprayed coating was subsequently remelted by plasma arc using the powers of 20 kW, 25 kW, and 30 kW, respectively. The interfacial microstructures, the size distributions and total areas of the interfacial pores, interfacial hardness, and bond strength of all prepared coating samples were investigated. After remelting, the number and the total area of interfacial pores decrease with increasing the remelting power. Correspondingly, the interfacial hardness and bond strength of coatings increase with increasing the remelting power The bond strength of coatings basically has a linear relationship with the total area of interfacial pores. The built relationship may be used to predict the bond strength of NiCrBSi coatings. View Full-Text
Keywords: NiCrBSi; plasma spraying; microstructure; hardness; bond strength NiCrBSi; plasma spraying; microstructure; hardness; bond strength
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MDPI and ACS Style

Chen, L.-Y.; Liu, Y.-T.; Xuan, H.-N.; Zhao, C.-H.; Bobrov, M.; Zang, Q.-H.; Peng, J.-H.; Lu, S.; Zhang, L.-C. A New Method for Evaluating the Bond Strength of Plasma-Sprayed NiCrBSi Coatings. Metals 2022, 12, 168. https://doi.org/10.3390/met12020168

AMA Style

Chen L-Y, Liu Y-T, Xuan H-N, Zhao C-H, Bobrov M, Zang Q-H, Peng J-H, Lu S, Zhang L-C. A New Method for Evaluating the Bond Strength of Plasma-Sprayed NiCrBSi Coatings. Metals. 2022; 12(2):168. https://doi.org/10.3390/met12020168

Chicago/Turabian Style

Chen, Liang-Yu, Yi-Tong Liu, Hao-Nan Xuan, Cui-Hua Zhao, Maksym Bobrov, Qian-Hao Zang, Jin-Hua Peng, Sheng Lu, and Lai-Chang Zhang. 2022. "A New Method for Evaluating the Bond Strength of Plasma-Sprayed NiCrBSi Coatings" Metals 12, no. 2: 168. https://doi.org/10.3390/met12020168

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