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Article

Effect of Initial Surface Scratches on the Cavitation Erosion Behavior of 316L Stainless Steel Substrates and 316L Stainless Steel Coatings

1
Key Laboratory of Impact and Safety Engineering (Ministry of Education), School of Mechanical Engineering and Mechanics, Ningbo University, Ningbo 315211, China
2
Zhejiang-Japan Joint Laboratory for Antibacterial and Antifouling Technology, Zhejiang Engineering Research Center for Biomedical Materials, Cixi Institute of Biomedical Engineering, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
3
Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, China
4
Chongyi Zhangyuan Tungsten Co., Ltd., Ganzhou 341000, China
*
Authors to whom correspondence should be addressed.
These authors contributed equally to this work.
Materials 2023, 16(4), 1392; https://doi.org/10.3390/ma16041392
Submission received: 10 January 2023 / Revised: 3 February 2023 / Accepted: 4 February 2023 / Published: 7 February 2023
(This article belongs to the Special Issue New Functional Materials with Cavitation-Erosion Resistance)

Abstract

Rough surfaces have been widely considered as negative factors affecting cavitation erosion resistance. However, this study presented the opposite result. Here, 316L stainless steel substrates and the arc-sprayed 316L stainless steel coatings were subjected to a specific grinding process that introduced scratches on the surfaces. The surface hardness values of these ground specimens were measured to evaluate the influence of the grinding-induced strain hardening. The cavitation erosion performance of the specimens was evaluated. The results showed that rough surfaces with scratches could enhance the cavitation erosion resistance, particularly at the early stage of cavitation erosion. The scratches had a greater effect on the cavitation erosion resistance of the coatings than on the substrates. Moreover, rough surfaces with initial surface scratches could extend the incubation period of the 316L stainless steel substrates due to the inhibition of the plastic deformation. The SEM observation showed that the scratch structure of the coating surface inhibited the growth of cracks and the propagation of cavitation pits. This study could also serve as a reference for investigating the cavitation erosion behaviors of materials with a particular surface feature.
Keywords: stainless steel coating; cavitation erosion; initial surface scratch; damage mechanism; plastic deformation; SEM observation stainless steel coating; cavitation erosion; initial surface scratch; damage mechanism; plastic deformation; SEM observation

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MDPI and ACS Style

Lu, P.; Xu, Z.; Tian, Y.; Yang, R.; Hu, K.; Li, H.; Yin, Y.; Chen, X. Effect of Initial Surface Scratches on the Cavitation Erosion Behavior of 316L Stainless Steel Substrates and 316L Stainless Steel Coatings. Materials 2023, 16, 1392. https://doi.org/10.3390/ma16041392

AMA Style

Lu P, Xu Z, Tian Y, Yang R, Hu K, Li H, Yin Y, Chen X. Effect of Initial Surface Scratches on the Cavitation Erosion Behavior of 316L Stainless Steel Substrates and 316L Stainless Steel Coatings. Materials. 2023; 16(4):1392. https://doi.org/10.3390/ma16041392

Chicago/Turabian Style

Lu, Pengfei, Ziqi Xu, Ye Tian, Rui Yang, Kaixin Hu, Hua Li, Yanhong Yin, and Xiuyong Chen. 2023. "Effect of Initial Surface Scratches on the Cavitation Erosion Behavior of 316L Stainless Steel Substrates and 316L Stainless Steel Coatings" Materials 16, no. 4: 1392. https://doi.org/10.3390/ma16041392

APA Style

Lu, P., Xu, Z., Tian, Y., Yang, R., Hu, K., Li, H., Yin, Y., & Chen, X. (2023). Effect of Initial Surface Scratches on the Cavitation Erosion Behavior of 316L Stainless Steel Substrates and 316L Stainless Steel Coatings. Materials, 16(4), 1392. https://doi.org/10.3390/ma16041392

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