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

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

Clc Number:

TB332

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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    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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[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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History
  • Received:December 16,2020
  • Revised:April 09,2021
  • Adopted:May 12,2021
  • Online: January 09,2022
  • Published: December 24,2021