Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
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Preparation method and application of continuous fiber reinforced silicon nitride-based multiphase ceramic material with sandwich structure
The invention relates to the technical field of functional materials, in particular to a preparation method and application of a continuous fiber reinforced silicon nitride-based composite ceramic material with a sandwich structure. The preparation method comprises the following steps: mixing and ball-milling silicon nitride powder, a solvent and a sintering aid to obtain a silicon nitride suspension; drying the silicon nitride suspension to obtain silicon nitride composite powder; pre-sintering the silicon nitride composite powder to obtain multiphase ceramic powder; uniformly mixing the lithium-aluminum-silicon powder with water, a surfactant and a thickening agent to obtain a lithium-aluminum-silicon impregnation liquid; carrying out dipping treatment on carbon fibers by adopting a lithium-aluminum-silicon dipping solution to obtain a fiber dipping body; carrying out drying and carbon emission treatment on the fiber impregnated body to obtain a 2D fiber impregnated body; and sintering the 2D fiber impregnated body and the multiphase ceramic powder in a powder embedding manner to obtain the continuous fiber reinforced silicon nitride-based multiphase ceramic material with the sandwich structure. The method has the advantages of simplicity, high efficiency and low cost.
本发明涉及功能材料技术领域，特别是涉及一种具有夹层结构的连续纤维增强氮化硅基复相陶瓷材料的制备方法和应用。该制备方法包括以下步骤：将氮化硅粉与溶剂、烧结助剂混合球磨，得到氮化硅悬浮液；将氮化硅悬浮液烘干得到氮化硅复合粉末；对氮化硅复合粉末进行预烧结，得到复相陶瓷粉末；将锂铝硅粉末与水、表面活性剂和增稠剂混合均匀，得到锂铝硅浸渍液；采用锂铝硅浸渍液对碳纤维进行浸渍处理，得到纤维浸渍体；对纤维浸渍体进行干燥、排碳处理，得到2D纤维浸渍体；将2D纤维浸渍体与复相陶瓷粉末采用粉末包埋的方式进行烧结，得到具有夹层结构的连续纤维增强氮化硅基复相陶瓷材料。本发明方法具有简单、高效、低成本的优点。
Preparation method and application of continuous fiber reinforced silicon nitride-based multiphase ceramic material with sandwich structure
The invention relates to the technical field of functional materials, in particular to a preparation method and application of a continuous fiber reinforced silicon nitride-based composite ceramic material with a sandwich structure. The preparation method comprises the following steps: mixing and ball-milling silicon nitride powder, a solvent and a sintering aid to obtain a silicon nitride suspension; drying the silicon nitride suspension to obtain silicon nitride composite powder; pre-sintering the silicon nitride composite powder to obtain multiphase ceramic powder; uniformly mixing the lithium-aluminum-silicon powder with water, a surfactant and a thickening agent to obtain a lithium-aluminum-silicon impregnation liquid; carrying out dipping treatment on carbon fibers by adopting a lithium-aluminum-silicon dipping solution to obtain a fiber dipping body; carrying out drying and carbon emission treatment on the fiber impregnated body to obtain a 2D fiber impregnated body; and sintering the 2D fiber impregnated body and the multiphase ceramic powder in a powder embedding manner to obtain the continuous fiber reinforced silicon nitride-based multiphase ceramic material with the sandwich structure. The method has the advantages of simplicity, high efficiency and low cost.
本发明涉及功能材料技术领域，特别是涉及一种具有夹层结构的连续纤维增强氮化硅基复相陶瓷材料的制备方法和应用。该制备方法包括以下步骤：将氮化硅粉与溶剂、烧结助剂混合球磨，得到氮化硅悬浮液；将氮化硅悬浮液烘干得到氮化硅复合粉末；对氮化硅复合粉末进行预烧结，得到复相陶瓷粉末；将锂铝硅粉末与水、表面活性剂和增稠剂混合均匀，得到锂铝硅浸渍液；采用锂铝硅浸渍液对碳纤维进行浸渍处理，得到纤维浸渍体；对纤维浸渍体进行干燥、排碳处理，得到2D纤维浸渍体；将2D纤维浸渍体与复相陶瓷粉末采用粉末包埋的方式进行烧结，得到具有夹层结构的连续纤维增强氮化硅基复相陶瓷材料。本发明方法具有简单、高效、低成本的优点。
Preparation method and application of continuous fiber reinforced silicon nitride-based multiphase ceramic material with sandwich structure
一种具有夹层结构的连续纤维增强氮化硅基复相陶瓷材料的制备方法和应用
XIA LONG (Autor:in) / CHEN CHUANLIANG (Autor:in) / LYU HAO (Autor:in) / ZHANG WENXUAN (Autor:in) / WANG CHUNSHI (Autor:in) / ZHAO CHENYAO (Autor:in)
26.01.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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