Preparation method for matricial ultra-temperature ceramic composite material of zirconium boride-silicon carbide
A technology of ultra-high temperature ceramics and composite materials, which is applied in the field of preparation of composite materials and can solve problems such as low strength and fragility
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specific Embodiment approach 1
[0009] Specific embodiment one: the preparation method of the zirconium boride-silicon carbide layered ultra-high temperature ceramic composite material in this embodiment is as follows: 1. 20 parts by volume of α-SiC powder and 80 parts of ZrB 2 Mix powders, add absolute ethanol, the amount of absolute ethanol added is 70% to 75% of the volume percentage of the total amount of α-SiC powder, ZrB2 powder and absolute ethanol, and then perform constant temperature ball milling at 20 to 30°C for 10 to 15 hours Hours, then dry at 70-80°C, with a rotation speed of 30r / min-60r / min, and sieve to obtain ZrB with a particle size of 200-300 mesh 2 -20% volSiC powder; Two, 30 parts by volume of α-SiC powder and 70 parts of ZrB 2 Mix powders, add absolute ethanol, the amount of absolute ethanol added is 70% to 75% of the volume percentage of the total amount of α-SiC powder, ZrB2 powder and absolute ethanol, and then perform constant temperature ball milling at 20 to 30°C for 10 to 15 hou...
specific Embodiment approach 2
[0013] Embodiment 2: This embodiment is different from Embodiment 1 in that the release agent described in step 3 is boron nitride. Others are the same as in the first embodiment.
specific Embodiment approach 3
[0014] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that the addition of dehydrated alcohol in step 1 is 72% of the volume percentage of the total amount of α-SiC powder, ZrB2 powder and dehydrated ethanol. Others are the same as those in the first or second embodiment.
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