High-strength high-toughness zirconium diboride-silicon carbide-zirconia ceramic-based composite material and preparation method thereof
A technology of zirconia ceramics and zirconium diboride, which is applied in the field of ceramic matrix composite materials and its preparation, can solve the problems of difficult sintering and low fracture toughness, and achieve the effects of easy sintering, improved fracture toughness, and improved reliability
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specific Embodiment approach 1
[0008] Specific Embodiment 1: In this embodiment, the high-strength and high-toughness zirconium diboride-silicon carbide-zirconia ceramic matrix composite material is composed of 55% to 75% of zirconium diboride powder, 20% of silicon carbide powder and 5% by volume. % to 25% of zirconia fiber; among them, the volume purity of zirconium diboride powder is greater than 98%, and the particle size is 2 μm; the volume purity of silicon carbide powder is greater than 98%, and the particle size is 1 μm; The volume purity is greater than 98%, the diameter is 5-10 μm, and the length is 100-500 μm.
[0009] In this embodiment, zirconium diboride powder, silicon carbide powder and zirconium dioxide fiber are all existing commercially available materials.
specific Embodiment approach 2
[0010] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the high-strength and high-toughness zirconium diboride-silicon carbide-zirconia ceramic matrix composite material is composed of 55% zirconium diboride powder, 20% Made of silicon carbide powder and 25% zirconia fibers. Others are the same as in the first embodiment.
specific Embodiment approach 3
[0011] Specific embodiment three: This embodiment is different from specific embodiment one in that the high-strength and high-toughness zirconium diboride-silicon carbide-zirconia ceramic matrix composite material is composed of 75% zirconium diboride powder, 20% Made of silicon carbide powder and 5% zirconia fiber. Others are the same as in the first embodiment.
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