2B crystalline phase and α-Fe(Si) solid solution. The morphology of particle is spherical or elliptical. The FeBSiNb amorphous coating is consisted of amorphous (~85 vol%), Fe2B crystalline phase and α-Fe(Si) nanocrystalline phase. The crystallization of FeBSiNb amorphous coating occurs around 531~605℃.The glass transition top temperature Tg is about 513℃ and the onset top temperature of first crystallization event Tx is about 531℃. The critical cooling rate for glass formation of FeBSiNb alloy is calculated of about 2.0×106 K/s. Under the dry friction condition of 5N, 5Hz, 30min, the friction coefficient of FeBSiNb amorphous coating is only 0.2. The relative wear resistance of amorphous coating was more than 10 times compared with the 45# steel substrate."/>

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Fabrication of FeBSiNb Powder and Its Amorphous Coating
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National Engineering Research Center for Mechanical Product Remanufacturing,Academy of Armored Forces Engineering,National Engineering Research Center for Mechanical Product Remanufacturing,Academy of Armored Forces Engineering,National Engineering Research Center for Mechanical Product Remanufacturing,Academy of Armored Forces Engineering,National Engineering Research Center for Mechanical Product Remanufacturing,Academy of Armored Forces Engineering,National Engineering Research Center for Mechanical Product Remanufacturing,Academy of Armored Forces Engineering,National Engineering Research Center for Mechanical Product Remanufacturing,Academy of Armored Forces Engineering

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TG174.441

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    Abstract:

    The FeBSiNb amorphous coating was prepared by flame spraying using the alloy powders were fabricated by gas atomization. The morphology, microstructure, phase composition and thermal stability were investigated by XRD, SEM, TEM and DSC. The FeBSiNb alloy powder is composed of Fe2B crystalline phase and α-Fe(Si) solid solution. The morphology of particle is spherical or elliptical. The FeBSiNb amorphous coating is consisted of amorphous (~85 vol%), Fe2B crystalline phase and α-Fe(Si) nanocrystalline phase. The crystallization of FeBSiNb amorphous coating occurs around 531~605℃.The glass transition top temperature Tg is about 513℃ and the onset top temperature of first crystallization event Tx is about 531℃. The critical cooling rate for glass formation of FeBSiNb alloy is calculated of about 2.0×106 K/s. Under the dry friction condition of 5N, 5Hz, 30min, the friction coefficient of FeBSiNb amorphous coating is only 0.2. The relative wear resistance of amorphous coating was more than 10 times compared with the 45# steel substrate.

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[Shang Junchao, Liang Xiubing, Chen Yongxiong, Fan Jianwen, Wang Hui, Xu Binshi. Fabrication of FeBSiNb Powder and Its Amorphous Coating[J]. Rare Metal Materials and Engineering,2018,47(5):1601~1606.]
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History
  • Received:April 25,2016
  • Revised:August 19,2016
  • Adopted:September 18,2016
  • Online: June 08,2018
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