Three-dimensional carbon fiber-reinforced silicon dioxide-zirconium dioxide multiphase ceramic composite material and preparation method thereof
A technology of three-dimensional carbon fiber and composite ceramics, which is applied in the field of three-dimensional carbon fiber-reinforced silica-zirconia composite ceramic composite materials and its preparation. Issues such as research reports on silicon-zirconia composite ceramic composite materials, to achieve the effect of increasing the degree of filling, improving the ability of the matrix to bear and transmit loads, and improving the impregnation efficiency
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Embodiment 1
[0042] A method for preparing a three-dimensional carbon fiber reinforced silica-zirconia composite ceramic composite material of the present invention, comprising the following steps:
[0043] (1) Sol selection: select SiO with a solid phase content of 30wt% 2 -ZrO 2 Composite sol as SiO 2 -ZrO 2 The raw material of multiphase ceramic matrix, in which SiO 2 with ZrO 2 The molar ratio is 1:1, in the above SiO 2 -ZrO 2 Add HNO to composite sol 3 As a stabilizer, HNO 3 The addition amount is SiO 2 25% of the weight of the sol.
[0044] (2) Pretreatment of prefabricated parts: The three-dimensional carbon fiber prefabricated part obtained by stacking and stitching carbon fiber cloth is selected as the reinforcement phase, and the volume fraction of fibers in the three-dimensional carbon fiber prefabricated part is 48%. The selected three-dimensional carbon fiber prefabricated part was placed under vacuum, the temperature was raised to 1400 °C at a rate of 20 °C / min and ...
Embodiment 2
[0053] A method for preparing a three-dimensional carbon fiber reinforced silica-zirconia composite ceramic composite material of the present invention, comprising the following steps:
[0054] (1) Sol selection: select SiO with a solid phase content of 35wt% 2 -ZrO 2 Composite sol as SiO 2 -ZrO 2 The raw material of multiphase ceramic matrix, in which SiO 2 with ZrO 2 The molar ratio is 95:5, in the above SiO 2 -ZrO 2 Add HNO to composite sol 3 As a stabilizer, HNO 3 The amount added is SiO 2 20% of the weight of the sol.
[0055] (2) Pretreatment of prefabricated parts: The three-dimensional carbon fiber prefabricated part with three-dimensional four-way weaving structure is selected as the reinforcement phase, and the volume fraction of fibers in the three-dimensional carbon fiber prefabricated part is 53%. The selected three-dimensional carbon fiber preform was placed in a high-purity argon atmosphere, and the temperature was raised to 1800 °C at a rate of 20 °C / ...
Embodiment 3
[0063] A method for preparing a three-dimensional carbon fiber reinforced silica-zirconia composite ceramic composite material of the present invention, comprising the following steps:
[0064] (1) Sol selection: select SiO with a solid phase content of 20wt% 2 -ZrO 2 Composite sol as SiO 2 -ZrO 2 The raw material of multiphase ceramic matrix, in which SiO 2 with ZrO 2 The molar ratio is 5:95, in the above SiO 2 -ZrO 2 Add HNO to composite sol 3 As a stabilizer, HNO 3 The amount added is SiO 2 20% of the weight of the sol.
[0065] (2) Pretreatment of prefabricated parts: The three-dimensional carbon fiber prefabricated part with two-dimensional semi-woven structure is selected as the reinforcement phase, and the volume fraction of fibers in the three-dimensional carbon fiber prefabricated part is 46%. The selected three-dimensional carbon fiber prefabricated part was placed under vacuum, and the temperature was raised to 1400 °C at a rate of 15 °C / min and kept for 3...
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