2B相和α-Fe(Si)固溶體組成。FeBSiNb非晶涂層主要由非晶相(含量85vol%左右)、Fe2B晶體相和α-Fe(Si)納米晶相組成。非晶涂層在531~605℃區(qū)間發(fā)生晶化,涂層的玻璃轉(zhuǎn)變溫度Tg為513℃,晶化溫度Tx為531℃,計算得出FeBSiNb系合金形成非晶相的臨界冷卻速率在2.0×106 K/s左右。對涂層的摩擦磨損性能進行測試,在5N,5Hz,30min摩擦條件下,FeBSiNb非晶涂層的摩擦系數(shù)僅為0.2左右,相對耐磨性約為45#鋼基體的10倍。"/>

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FeBSiNb合金粉末制備及非晶涂層性能研究
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裝甲兵工程學院 機械產(chǎn)品再制造國家工程研究中心,裝甲兵工程學院 機械產(chǎn)品再制造國家工程研究中心,裝甲兵工程學院 機械產(chǎn)品再制造國家工程研究中心,裝甲兵工程學院 機械產(chǎn)品再制造國家工程研究中心,裝甲兵工程學院 機械產(chǎn)品再制造國家工程研究中心,裝甲兵工程學院 機械產(chǎn)品再制造國家工程研究中心

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TG174.441

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國家自然科學基金(項目號51375492和51575527)；教育部新世紀優(yōu)秀人才支持計劃項目(NCET-13-1068)


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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    摘要:

    采用氣霧化制備了FeBSiNb合金粉末,經(jīng)過火焰噴涂后,制備了高非晶含量的FeBSiNb涂層。利用X射線衍射儀、差熱分析儀、掃描電鏡和透射電鏡分析了粉末和涂層的表面形貌、顯微組織和結(jié)構特征。結(jié)果表明：FeBSiNb合金粉末主要由晶體Fe2B相和α-Fe(Si)固溶體組成。FeBSiNb非晶涂層主要由非晶相(含量85vol%左右)、Fe2B晶體相和α-Fe(Si)納米晶相組成。非晶涂層在531~605℃區(qū)間發(fā)生晶化,涂層的玻璃轉(zhuǎn)變溫度Tg為513℃,晶化溫度Tx為531℃,計算得出FeBSiNb系合金形成非晶相的臨界冷卻速率在2.0×106 K/s左右。對涂層的摩擦磨損性能進行測試,在5N,5Hz,30min摩擦條件下,FeBSiNb非晶涂層的摩擦系數(shù)僅為0.2左右,相對耐磨性約為45#鋼基體的10倍。

    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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商俊超,梁秀兵,陳永雄,范建文,王慧,徐濱士. FeBSiNb合金粉末制備及非晶涂層性能研究[J].稀有金屬材料與工程,2018,47(5):1601~1606.[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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  • 收稿日期:2016-04-25
  • 最后修改日期:2016-08-19
  • 錄用日期:2016-09-18
  • 在線發(fā)布日期: 2018-06-08
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