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A platform for research: civil engineering, architecture and urbanism
Preparation method of beta-SiAlON fiber, beta-SiAlON fiber and application
The invention provides a preparation method of a beta-SiAlON fiber, the beta-SiAlON fiber and application, and relates to the technical field of ceramic materials. The preparation method comprises the following steps: providing Si powder, AlN and alpha-Al2O3, adding a dispersing agent and ethanol, and carrying out ball milling to obtain slurry; drying, grinding and sieving the slurry to obtain uniform powder; uniformly stacking the powder on a porous quartz plate of a fluidized bed vertical tube furnace to form a bed layer, opening a gas source valve, enabling nitrogen to enter from the lower end of the furnace tube through a nozzle, enabling the interior of the furnace tube to be always in a nitrogen atmosphere, starting the vertical tube furnace, heating to a certain temperature according to a heating curve, keeping the temperature constant, adjusting a flow control valve, and starting a reaction; and after the reaction is finished, obtaining a mixture of the SiAlON ceramic fiber and unreacted raw material particles on a porous quartz plate, and screening to obtain the SiAlON ceramic fiber. The method can better meet the actual requirements of toughening and reinforcing fibers in the ceramic-based composite material, reducing the thermal conductivity of the structural material and the like.
本发明提供了一种β‑SiAlON纤维的制备方法、β‑SiAlON纤维及应用，涉及陶瓷材料技术领域。其制备方法是：提供Si粉、AlN和α‑Al2O3，加入分散剂与乙醇，进行球磨，得到料浆；将料浆干燥、研磨、过筛，得到均匀粉体；将粉体均匀堆在流化床立式管式炉的多孔石英板上，形成床层，打开气源阀门，使氮气通过喷嘴自炉管下端进入，使炉管内部始终处于氮气气氛中，启动立式管式炉按照升温曲线升至一定温度保持恒定，调整流量控制阀，开始反应；待反应结束，在多孔石英板上得到SiAlON陶瓷纤维以及未反应的原料颗粒的混合物，筛分，得到。本发明更好满足陶瓷基复合材料中的纤维增韧补强以及降低结构材料的热导等实际需求。
Preparation method of beta-SiAlON fiber, beta-SiAlON fiber and application
The invention provides a preparation method of a beta-SiAlON fiber, the beta-SiAlON fiber and application, and relates to the technical field of ceramic materials. The preparation method comprises the following steps: providing Si powder, AlN and alpha-Al2O3, adding a dispersing agent and ethanol, and carrying out ball milling to obtain slurry; drying, grinding and sieving the slurry to obtain uniform powder; uniformly stacking the powder on a porous quartz plate of a fluidized bed vertical tube furnace to form a bed layer, opening a gas source valve, enabling nitrogen to enter from the lower end of the furnace tube through a nozzle, enabling the interior of the furnace tube to be always in a nitrogen atmosphere, starting the vertical tube furnace, heating to a certain temperature according to a heating curve, keeping the temperature constant, adjusting a flow control valve, and starting a reaction; and after the reaction is finished, obtaining a mixture of the SiAlON ceramic fiber and unreacted raw material particles on a porous quartz plate, and screening to obtain the SiAlON ceramic fiber. The method can better meet the actual requirements of toughening and reinforcing fibers in the ceramic-based composite material, reducing the thermal conductivity of the structural material and the like.
本发明提供了一种β‑SiAlON纤维的制备方法、β‑SiAlON纤维及应用，涉及陶瓷材料技术领域。其制备方法是：提供Si粉、AlN和α‑Al2O3，加入分散剂与乙醇，进行球磨，得到料浆；将料浆干燥、研磨、过筛，得到均匀粉体；将粉体均匀堆在流化床立式管式炉的多孔石英板上，形成床层，打开气源阀门，使氮气通过喷嘴自炉管下端进入，使炉管内部始终处于氮气气氛中，启动立式管式炉按照升温曲线升至一定温度保持恒定，调整流量控制阀，开始反应；待反应结束，在多孔石英板上得到SiAlON陶瓷纤维以及未反应的原料颗粒的混合物，筛分，得到。本发明更好满足陶瓷基复合材料中的纤维增韧补强以及降低结构材料的热导等实际需求。
Preparation method of beta-SiAlON fiber, beta-SiAlON fiber and application
一种β-SiAlON纤维的制备方法、β-SiAlON纤维及应用
GAO JINXING (author) / YUE WENJIE (author) / XU LINGLING (author) / LIU QINGQING (author) / WANG SHUNHUA (author) / LIU JIANGTAO (author)
2024-07-16
Patent
Electronic Resource
Chinese
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