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High-performance ceramic with carbon fibers coated with silicon oxide on surface compounded with rare earth lanthanum zirconate and preparation method of high-performance ceramic
The invention discloses a high-performance ceramic with carbon fibers coated with silicon oxide on the surface compounded with rare earth lanthanum zirconate and a preparation method of the high-performance ceramic. According to the preparation method, the surfaces of carbon fibers are subjected to activating treatment, then the surfaces of the carbon fibers are coated with silicon oxide to obtaincarbon fibers with the surface coated with silicon oxide, and the carbon fibers with the surface coated with silicon oxide are added in the lanthanum zirconate ceramic preparation process so as to achieve the purpose of improving the mechanical property. The preparation method disclosed by the invention comprises the following steps: preparing carbon fibers coated with silicon oxide on the surface, preparing mixed powder, and sintering a ceramic biscuit at high temperature and high pressure. The preparation method disclosed by the invention is stable and reliable in process and simple to operate, the mechanical strength of the rare earth lanthanum zirconate ceramic is obviously improved, and the thermal conductivity is effectively reduced within a certain doping range, so that the rare earth lanthanum zirconate ceramic becomes a high-temperature thermal insulation material with reliable mechanical bearing performance.
本发明公开了一种表面包覆氧化硅的碳纤维复合稀土锆酸镧的高性能陶瓷及其制备方法。本发明通过对碳纤维表面进行活化处理，再对其表面进行包覆氧化硅，制备得到表面包覆氧化硅的碳纤维，在制备锆酸镧陶瓷过程中加入表面包覆氧化硅的碳纤维以达到提高力学性能的目的。本发明公开的制备方法包括表面包覆氧化硅的碳纤维制备、混合粉末制备、陶瓷素坯高温高压烧结。本发明的制备方法工艺稳定可靠、操作简单，稀土锆酸镧陶瓷的力学强度有明显提高，在一定掺杂范围内有效降低了热导率，使其成为具有可靠力学承载性能的高温隔热材料。
High-performance ceramic with carbon fibers coated with silicon oxide on surface compounded with rare earth lanthanum zirconate and preparation method of high-performance ceramic
The invention discloses a high-performance ceramic with carbon fibers coated with silicon oxide on the surface compounded with rare earth lanthanum zirconate and a preparation method of the high-performance ceramic. According to the preparation method, the surfaces of carbon fibers are subjected to activating treatment, then the surfaces of the carbon fibers are coated with silicon oxide to obtaincarbon fibers with the surface coated with silicon oxide, and the carbon fibers with the surface coated with silicon oxide are added in the lanthanum zirconate ceramic preparation process so as to achieve the purpose of improving the mechanical property. The preparation method disclosed by the invention comprises the following steps: preparing carbon fibers coated with silicon oxide on the surface, preparing mixed powder, and sintering a ceramic biscuit at high temperature and high pressure. The preparation method disclosed by the invention is stable and reliable in process and simple to operate, the mechanical strength of the rare earth lanthanum zirconate ceramic is obviously improved, and the thermal conductivity is effectively reduced within a certain doping range, so that the rare earth lanthanum zirconate ceramic becomes a high-temperature thermal insulation material with reliable mechanical bearing performance.
本发明公开了一种表面包覆氧化硅的碳纤维复合稀土锆酸镧的高性能陶瓷及其制备方法。本发明通过对碳纤维表面进行活化处理，再对其表面进行包覆氧化硅，制备得到表面包覆氧化硅的碳纤维，在制备锆酸镧陶瓷过程中加入表面包覆氧化硅的碳纤维以达到提高力学性能的目的。本发明公开的制备方法包括表面包覆氧化硅的碳纤维制备、混合粉末制备、陶瓷素坯高温高压烧结。本发明的制备方法工艺稳定可靠、操作简单，稀土锆酸镧陶瓷的力学强度有明显提高，在一定掺杂范围内有效降低了热导率，使其成为具有可靠力学承载性能的高温隔热材料。
High-performance ceramic with carbon fibers coated with silicon oxide on surface compounded with rare earth lanthanum zirconate and preparation method of high-performance ceramic
一种表面包覆氧化硅的碳纤维复合稀土锆酸镧的高性能陶瓷及其制备方法
LIU YI (author) / YAN DONGMING (author) / WANG HUAN (author)
2020-05-05
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2020
| European Patent Office | 2020
| European Patent Office | 2024