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Effect of Steady Magnetic Field on Microstructure and Properties of NiCrBSi Coating by Supersonic Plasma Spraying
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1.School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300401, China;2.National Key Laboratory for Remanufacturing, Army Academy of Armored Forces, Beijing 100072, China

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Fund Project:

National Natural Science Foundation of China (52130509); Key Basic Research Project of Foundation Strengthening Plan (2019-JCJQ-ZD-302)

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    Abstract:

    The NiCrBSi coating was sprayed onto the 45 steel under a steady magnetic field. The microstructure, mechanical properties, and friction and wear properties of coatings were studied. In the steady magnetic field, the coating porosity decreases dramatically. No new phase forms, but the preferred orientation occurs for the γ-Ni, FeNi3, and Ni3Si2 phases. Moreover, the magnetic domains within the coating become more active and more ordered with subtle variations in external magnetic fields. The microhardness of the cross section of coating increases significantly, the residual stress on the surface fluctuates obviously, and the wear amount of the coating decreases by nearly 13.6%. Results show that a steady magnetic field can improve the coating quality effectively. Besides, the mechanism of property enhancement of Ni-based coating by spraying under steady magnetic field was discussed.

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[Zhang Lei, Huang Yanfei, He Dongyu, Guo Weiling, Li Guolu, Dong Tianshun. Effect of Steady Magnetic Field on Microstructure and Properties of NiCrBSi Coating by Supersonic Plasma Spraying[J]. Rare Metal Materials and Engineering,2023,52(1):103~110.]
DOI:10.12442/j. issn.1002-185X.20220206

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History
  • Received:March 15,2022
  • Revised:August 07,2022
  • Adopted:August 11,2022
  • Online: February 09,2023
  • Published: February 08,2023