Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Al-Si complex phase oxide continuous ceramic fiber and preparation method thereof
The invention discloses an Al-Si complex phase oxide continuous ceramic fiber and a preparation method thereof. The softening point of an Al-Si copolymerized oxide ceramic precursor is between 80 DEGC and 190 DEG C; and the weight ratio of Al2O3 to SiO2 in the continuous ceramic fiber is (50-95): (5-50). The technical key of the invention lies in that in the Al-Si copolymerized oxide ceramic precursor, Al and Si components are good in compatibility, atomic-scale uniform distribution can be realized, and the proportion is adjustable; the Al-Si complex-phase oxide continuous ceramic fiber has arelatively high temperature-resistant grade, the average diameter of the fiber is 5-30 microns, the tensile strength is not less than 2.0 GPa, the tensile elastic modulus is not less than 200 GPa, and the strength retention rate after high-temperature heat treatment is not less than 70%.
本发明公开了一种Al‑Si复相氧化物连续陶瓷纤维及其制备方法。所述Al‑Si共聚氧化物陶瓷前驱体软化点介于80～190℃；所述连续陶瓷纤维中Al2O3和SiO2的重量比为50～95:5～50。本发明的技术关键在于Al‑Si共聚氧化物陶瓷前驱体中，Al、Si两组分相容性好，可实现原子级均匀分布，且比例可调，以及Al‑Si复相氧化物连续陶瓷纤维具有较高的耐温等级，所述纤维的平均直径为5～30μm，拉伸强度不小于2.0GPa，拉伸弹性模量不小于200GPa，高温热处理后的强度保留率不低于70％。
Al-Si complex phase oxide continuous ceramic fiber and preparation method thereof
The invention discloses an Al-Si complex phase oxide continuous ceramic fiber and a preparation method thereof. The softening point of an Al-Si copolymerized oxide ceramic precursor is between 80 DEGC and 190 DEG C; and the weight ratio of Al2O3 to SiO2 in the continuous ceramic fiber is (50-95): (5-50). The technical key of the invention lies in that in the Al-Si copolymerized oxide ceramic precursor, Al and Si components are good in compatibility, atomic-scale uniform distribution can be realized, and the proportion is adjustable; the Al-Si complex-phase oxide continuous ceramic fiber has arelatively high temperature-resistant grade, the average diameter of the fiber is 5-30 microns, the tensile strength is not less than 2.0 GPa, the tensile elastic modulus is not less than 200 GPa, and the strength retention rate after high-temperature heat treatment is not less than 70%.
本发明公开了一种Al‑Si复相氧化物连续陶瓷纤维及其制备方法。所述Al‑Si共聚氧化物陶瓷前驱体软化点介于80～190℃；所述连续陶瓷纤维中Al2O3和SiO2的重量比为50～95:5～50。本发明的技术关键在于Al‑Si共聚氧化物陶瓷前驱体中，Al、Si两组分相容性好，可实现原子级均匀分布，且比例可调，以及Al‑Si复相氧化物连续陶瓷纤维具有较高的耐温等级，所述纤维的平均直径为5～30μm，拉伸强度不小于2.0GPa，拉伸弹性模量不小于200GPa，高温热处理后的强度保留率不低于70％。
Al-Si complex phase oxide continuous ceramic fiber and preparation method thereof
一种Al-Si复相氧化物连续陶瓷纤维及其制备方法
WANG QIAN (Autor:in) / GE KE (Autor:in) / ZHAO TONG (Autor:in) / LI JINGYU (Autor:in) / GUO HAISHUANG (Autor:in) / WANG GUOJIE (Autor:in)
02.10.2020
Patent
Elektronische Ressource
Chinesisch
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