Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-temperature-resistant special gas filtering aluminum oxide ceramic membrane and preparation method thereof
The invention discloses a high-temperature-resistant special gas filtering aluminum oxide ceramic membrane and a preparation method thereof.The preparation method includes the steps that firstly, a high-pressure hydrothermal method is adopted, the surfaces of aluminum oxide ceramic particles are evenly wrapped with nano particles, and crack defects in the particles are filled; and then, stably and rapidly combining the nano zirconium oxide particles into cracks on the surface of the aluminum oxide ceramic powder and in the particles through a uniform and rapid heating process by utilizing a microwave low-temperature rapid one-time sintering technology and combining the high wave-absorbing efficiency of the nano zirconium oxide particles (the efficiency is superior to that of large-particle alpha-aluminum oxide). According to the method, defects and nonuniformity of the ceramic membrane support body possibly caused by desorption, agglomeration and segregation of nano-particles in the subsequent ball milling, coating and sintering processes are effectively avoided, and meanwhile, the problem of abnormal agglomeration and growth of nano-crystalline grains caused by nonuniform temperature in a traditional heating method is solved.
本发明公开了一种耐高温特种气体过滤氧化铝陶瓷膜及其制备方法，首先采用高压水热法，首先采用高压水热法，将纳米粒子均匀地包裹在氧化铝陶瓷颗粒的表面，并填充颗粒内部的裂纹缺陷；接着，利用微波低温快速一次烧结技术，通过均匀快速的加热过程，结合纳米氧化锆颗粒的高吸波效率(这一效率优于大颗粒α‑氧化铝)，将纳米氧化锆颗粒稳定且迅速地结合到氧化铝陶瓷粉体的表面和颗粒内部的裂缝中。本发明有效避免了后续球磨、涂膜及烧结过程中可能由纳米颗粒脱附、团聚和偏析引起的陶瓷膜支撑体缺陷和不均匀性，同时解决了传统加热方法中温度不均匀导致纳米晶粒异常团聚长大的问题。
High-temperature-resistant special gas filtering aluminum oxide ceramic membrane and preparation method thereof
The invention discloses a high-temperature-resistant special gas filtering aluminum oxide ceramic membrane and a preparation method thereof.The preparation method includes the steps that firstly, a high-pressure hydrothermal method is adopted, the surfaces of aluminum oxide ceramic particles are evenly wrapped with nano particles, and crack defects in the particles are filled; and then, stably and rapidly combining the nano zirconium oxide particles into cracks on the surface of the aluminum oxide ceramic powder and in the particles through a uniform and rapid heating process by utilizing a microwave low-temperature rapid one-time sintering technology and combining the high wave-absorbing efficiency of the nano zirconium oxide particles (the efficiency is superior to that of large-particle alpha-aluminum oxide). According to the method, defects and nonuniformity of the ceramic membrane support body possibly caused by desorption, agglomeration and segregation of nano-particles in the subsequent ball milling, coating and sintering processes are effectively avoided, and meanwhile, the problem of abnormal agglomeration and growth of nano-crystalline grains caused by nonuniform temperature in a traditional heating method is solved.
本发明公开了一种耐高温特种气体过滤氧化铝陶瓷膜及其制备方法，首先采用高压水热法，首先采用高压水热法，将纳米粒子均匀地包裹在氧化铝陶瓷颗粒的表面，并填充颗粒内部的裂纹缺陷；接着，利用微波低温快速一次烧结技术，通过均匀快速的加热过程，结合纳米氧化锆颗粒的高吸波效率(这一效率优于大颗粒α‑氧化铝)，将纳米氧化锆颗粒稳定且迅速地结合到氧化铝陶瓷粉体的表面和颗粒内部的裂缝中。本发明有效避免了后续球磨、涂膜及烧结过程中可能由纳米颗粒脱附、团聚和偏析引起的陶瓷膜支撑体缺陷和不均匀性，同时解决了传统加热方法中温度不均匀导致纳米晶粒异常团聚长大的问题。
High-temperature-resistant special gas filtering aluminum oxide ceramic membrane and preparation method thereof
一种耐高温特种气体过滤氧化铝陶瓷膜及其制备方法
QIU ZHUGUO (Autor:in) / HONG YUBIN (Autor:in) / FANG FULIN (Autor:in) / LAN WEIGUANG (Autor:in)
31.12.2024
Patent
Elektronische Ressource
Chinesisch
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