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液相滲硅法和原位反應(yīng)法制備硅化石墨及性能研究
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作者單位:

長(zhǎng)安大學(xué)

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通訊作者:

中圖分類號(hào):

TB332

基金項(xiàng)目:

國(guó)家自然科學(xué)基金(51902028),中央高?；究蒲袠I(yè)務(wù)費(fèi)專項(xiàng)基金(300102310102,300102310105,300102319302),陜西省自然科學(xué)基金重點(diǎn)項(xiàng)目(2020JQ-372, 2021JM-172), 陜西省重點(diǎn)研發(fā)計(jì)劃(2021GY-252)


Preparation of siliconized graphite by liquid silicon infiltration and in-situ reaction method
Author:
Affiliation:

School of Materials Science and Engineering,Chang`an University,Xi’an

Fund Project:

National Natural Science Foundation of China(51902028), Special Funding for Fundamental Scientific Research of Central Colleges of Chang’an University(300102310102,300102310105,300102319302), Natural Science Foundation of Shaanxi Province(2020JQ-372, 2021JM-172), Key Research and Development Program of Shaanxi Province(2021GY-252)

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    摘要:

    分別采用液相滲硅法和原位反應(yīng)法制備了硅化石墨,討論了石墨基體密度和滲硅方法對(duì)硅化石墨力學(xué)性能和摩擦性能的影響。結(jié)果表明：兩種方法都能明顯提升石墨的抗彎強(qiáng)度,液相滲硅法制得的硅化石墨表面有一層濃度梯度分布的SiC層,石墨基體的耐磨性能得到明顯改善。綜合力學(xué)性能和摩擦性能考慮,選擇低密度的石墨通過石墨化處理并采用液相滲硅法可以制備得到性能更優(yōu)的硅化石墨。

    Abstract:

    Silicified graphite was prepared by liquid-phase siliconizing method and in-situ reaction method. The influence of graphite matrix density and siliconizing method on the mechanical properties and friction properties of siliconized graphite was discussed. The results show that the two methods can significantly improve the flexural strength of graphite. The surface of the siliconized graphite prepared by the liquid-phase siliconizing method has a SiC layer with a concentration gradient, which can significantly improve the wear resistance of the matrix. Considering the comprehensive mechanical properties and friction properties, choosing low-density graphite through graphitization treatment and adopting the liquid phase siliconizing method can prepare silicified graphite with better performance.

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孫國(guó)棟,呂文炯,解靜,李輝,羅偉華,賈研.液相滲硅法和原位反應(yīng)法制備硅化石墨及性能研究[J].稀有金屬材料與工程,2021,50(12):4509~4515.[Guodong SUN, Wenjiong LV, Jing XIE, Hui LI, Weihua LUO, Yan JIA. Preparation of siliconized graphite by liquid silicon infiltration and in-situ reaction method[J]. Rare Metal Materials and Engineering,2021,50(12):4509~4515.]
DOI：10.12442/j. issn.1002-185X.20200972

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  • 收稿日期:2020-12-16
  • 最后修改日期:2021-04-09
  • 錄用日期:2021-05-12
  • 在線發(fā)布日期: 2022-01-09
  • 出版日期: 2021-12-24