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Aluminum borate whisker reinforced and toughened nonmetal-based composite material and preparation method thereof
The invention discloses an aluminum borate whisker reinforced and toughened nonmetal-based composite material. An aluminum borate whisker reinforced and toughened nonmetal material is adopted; and the bending strength and fracture toughness of the nonmetal-based composite material are improved by reinforcing and toughening the nonmetal-based composite material through the aluminum borate whiskers, and the wear resistance of the nonmetal-based composite material is reduced. Firstly, after forming a liquid phase, the aluminum borate whiskers flow into a crystal boundary and are recrystallized to coat crystal grains, so that the effect of inhibiting the growth of the crystal grains is achieved, and pores are filled to increase the density; secondly, the liquefied aluminum borate crystal whiskers are extruded by the crystal grains and recrystallized on the surfaces of the crystal grains to form crystal whiskers, and the matrix strength is improved due to the insertion and extraction mechanism of the crystal whiskers; and thirdly, the liquefied aluminum borate crystal whiskers are reduced by solid phase C and part of gasified C from isolation carbon paper, a graphite mold, a graphite heating body and carbon felt and then react with ZrO2 at the internal grain boundary to generate ZrB2, and ZrB2 has a very good toughening effect.
本发明公开了一种硼酸铝晶须增强补韧非金属基复合材料，采用硼酸铝晶须增强补韧非金属材料；通过硼酸铝晶须增强补韧非金属基复合材料以提高非金属基复合材料的弯曲强度和断裂韧性，降低非金属基复合材料的耐磨损性能。一是硼酸铝晶须形成液相后通过流动进入到晶界处并重结晶，包覆晶粒，起到抑制晶粒长大的作用，同时填补孔隙增加致密度；二是液化后的硼酸铝晶须被晶粒挤出在晶粒表面重结晶成晶须，由于晶须的插拔机制而提高基体强度；三是液化的硼酸铝晶须被来自隔离碳纸、石墨模具、石墨发热体以及碳毡中的固相C和部分气化C还原，进而与内部晶界处的ZrO2反应生成ZrB2，而ZrB2具有很好的增韧作用。
Aluminum borate whisker reinforced and toughened nonmetal-based composite material and preparation method thereof
The invention discloses an aluminum borate whisker reinforced and toughened nonmetal-based composite material. An aluminum borate whisker reinforced and toughened nonmetal material is adopted; and the bending strength and fracture toughness of the nonmetal-based composite material are improved by reinforcing and toughening the nonmetal-based composite material through the aluminum borate whiskers, and the wear resistance of the nonmetal-based composite material is reduced. Firstly, after forming a liquid phase, the aluminum borate whiskers flow into a crystal boundary and are recrystallized to coat crystal grains, so that the effect of inhibiting the growth of the crystal grains is achieved, and pores are filled to increase the density; secondly, the liquefied aluminum borate crystal whiskers are extruded by the crystal grains and recrystallized on the surfaces of the crystal grains to form crystal whiskers, and the matrix strength is improved due to the insertion and extraction mechanism of the crystal whiskers; and thirdly, the liquefied aluminum borate crystal whiskers are reduced by solid phase C and part of gasified C from isolation carbon paper, a graphite mold, a graphite heating body and carbon felt and then react with ZrO2 at the internal grain boundary to generate ZrB2, and ZrB2 has a very good toughening effect.
本发明公开了一种硼酸铝晶须增强补韧非金属基复合材料，采用硼酸铝晶须增强补韧非金属材料；通过硼酸铝晶须增强补韧非金属基复合材料以提高非金属基复合材料的弯曲强度和断裂韧性，降低非金属基复合材料的耐磨损性能。一是硼酸铝晶须形成液相后通过流动进入到晶界处并重结晶，包覆晶粒，起到抑制晶粒长大的作用，同时填补孔隙增加致密度；二是液化后的硼酸铝晶须被晶粒挤出在晶粒表面重结晶成晶须，由于晶须的插拔机制而提高基体强度；三是液化的硼酸铝晶须被来自隔离碳纸、石墨模具、石墨发热体以及碳毡中的固相C和部分气化C还原，进而与内部晶界处的ZrO2反应生成ZrB2，而ZrB2具有很好的增韧作用。
Aluminum borate whisker reinforced and toughened nonmetal-based composite material and preparation method thereof
一种硼酸铝晶须增强补韧非金属基复合材料及其制备方法
JIA BI (Autor:in) / SHI JINLIANG (Autor:in) / DI YONGJIANG (Autor:in) / LIU YIN (Autor:in) / WANG XUEYI (Autor:in) / TIAN HAO (Autor:in) / ZHU JUN (Autor:in) / TANG RUI (Autor:in) / CHEN XINGYU (Autor:in) / ZHANG DANXIA (Autor:in)
23.11.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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