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Slurry Erosion Behavior of F6NM Stainless Steel and High-Velocity Oxygen Fuel-Sprayed WC-10Co-4Cr Coating

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Abstract

WC-10Co-4Cr coating was applied to the surface of F6NM stainless steel by high-velocity oxygen-fuel spraying. The slurry erosion behavior of the matrix and coating was examined at different rotational speeds using a self-made machine. This experiment effectively simulates real slurry erosion in an environment with high silt load. At low velocity (<6 m/s), the main failure mechanism was cavitation. Small bubbles acted as an air cushion, obstructing direct contact between sand and the matrix surface. However, at velocity above 9 m/s, abrasive wear was the dominant failure mechanism. The results indicate that WC-10Co-4Cr coating significantly improved the slurry resistance at higher velocity, because it created a thin and dense WC coating on the surface.

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Acknowledgment

This study was supported by a project funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions (PADA), the National Natural Science Foundation of China (Grant No. 51474131), and Graduate Research and Innovation Projects in Jiangsu Province (Grant No. KYLX16 0349).

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Authors and Affiliations

  1. College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, 29 Yudao Street, Nanjing, 210000, China

    S. Y. Cui, Q. Miao, W. P. Liang, B. Z. Huang, Z. Ding & B. W. Chen

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  1. S. Y. Cui
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  2. Q. Miao
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  3. W. P. Liang
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  4. B. Z. Huang
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  5. Z. Ding
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  6. B. W. Chen
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Correspondence to S. Y. Cui.

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Cui, S.Y., Miao, Q., Liang, W.P. et al. Slurry Erosion Behavior of F6NM Stainless Steel and High-Velocity Oxygen Fuel-Sprayed WC-10Co-4Cr Coating. J Therm Spray Tech 26, 473–482 (2017). https://doi.org/10.1007/s11666-016-0515-4

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  • DOI: https://doi.org/10.1007/s11666-016-0515-4

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