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Toughened silicon carbide ceramic and preparation method thereof
The invention discloses toughened silicon carbide ceramic and a preparation method thereof, belongs to the technical field of ceramic materials, silicon carbide micro-powder, boron carbide micro-powder, carbon black, flaky aluminum oxide, magnesium fluoride, lanthanum oxide, carbon nanotubes, reinforced fibers and Ti-Si-Fe alloy powder are used as raw materials, are fully mixed after two-stage ball milling, spherical powder is obtained while the raw materials are refined, the flowability of the powder is enhanced, and subsequent compression molding of the powder is facilitated; the toughened silicon carbide ceramic material prepared by the invention has excellent hardness, density, strength and toughness, can still maintain most of properties under a high-temperature condition, and overcomes the problem of non-uniform ceramic quality caused by difficult uniform mixing of whiskers and fibers with very high length-diameter ratio in the prior art, so that the silicon carbide ceramic material has excellent properties.
本发明公开了一种增韧碳化硅陶瓷及其制备方法，属于陶瓷材料技术领域，本发明以碳化硅微粉、碳化硼微粉、炭黑、片状氧化铝、氟化镁、氧化镧、碳纳米管、增强纤维、Ti‑Si‑Fe合金粉为原料，在经过两段球磨后使其充分混合，在细化原料的同时获得一些球形粉体，增强粉体流动性，使其易于后续压制成型；本发明制备的增韧碳化硅陶瓷材料具有极好的硬度、密度、强度和韧性，在高温条件下仍能保持大部分性能，克服了现有技术中长径比很高的晶须和纤维难以混合均匀导致陶瓷品质不均的问题，使得碳化硅陶瓷材料具有优异的性能。
Toughened silicon carbide ceramic and preparation method thereof
The invention discloses toughened silicon carbide ceramic and a preparation method thereof, belongs to the technical field of ceramic materials, silicon carbide micro-powder, boron carbide micro-powder, carbon black, flaky aluminum oxide, magnesium fluoride, lanthanum oxide, carbon nanotubes, reinforced fibers and Ti-Si-Fe alloy powder are used as raw materials, are fully mixed after two-stage ball milling, spherical powder is obtained while the raw materials are refined, the flowability of the powder is enhanced, and subsequent compression molding of the powder is facilitated; the toughened silicon carbide ceramic material prepared by the invention has excellent hardness, density, strength and toughness, can still maintain most of properties under a high-temperature condition, and overcomes the problem of non-uniform ceramic quality caused by difficult uniform mixing of whiskers and fibers with very high length-diameter ratio in the prior art, so that the silicon carbide ceramic material has excellent properties.
本发明公开了一种增韧碳化硅陶瓷及其制备方法，属于陶瓷材料技术领域，本发明以碳化硅微粉、碳化硼微粉、炭黑、片状氧化铝、氟化镁、氧化镧、碳纳米管、增强纤维、Ti‑Si‑Fe合金粉为原料，在经过两段球磨后使其充分混合，在细化原料的同时获得一些球形粉体，增强粉体流动性，使其易于后续压制成型；本发明制备的增韧碳化硅陶瓷材料具有极好的硬度、密度、强度和韧性，在高温条件下仍能保持大部分性能，克服了现有技术中长径比很高的晶须和纤维难以混合均匀导致陶瓷品质不均的问题，使得碳化硅陶瓷材料具有优异的性能。
Toughened silicon carbide ceramic and preparation method thereof
一种增韧碳化硅陶瓷及其制备方法
DAI PEIYUN (author) / WANG DONGJUAN (author) / LI XIAOLI (author) / ZHANG JILIANG (author) / LIU RU (author) / LU JINXI (author)
2020-07-14
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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