Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Low-temperature melt reaction preparation method of compact ceramic film
The invention provides a low-temperature melt reaction method for preparing a compact ceramic film. According to the preparation method, the low-temperature melt is introduced, so that the high-melting-point reactant is dissolved in the molten salt and reacts, the target product crystal is separated out after supersaturation and gradually grows and continuously grows, and finally, the compact ceramic film of 1-10 microns can be obtained. According to the invention, a solid-solid system in a traditional sintering method is converted into a solid-liquid system, so that the mass transfer rate and the reaction rate are higher; meanwhile, traditional high-temperature sintering (gt; the problems of deformation, element segregation and the like caused by high temperature (1200 DEG C) are solved; and the method is simple and low in cost, does not need specific instruments and equipment, and is easy to realize large-scale preparation.
本发明提供了一种低温熔体反应法制备致密陶瓷薄膜。本发明引入低温熔体，使高熔点的反应物溶解在该熔融盐中并发生反应，达到过饱和后析出目标产物晶体并逐渐长大、连生，最后可获得1～10μm的致密陶瓷薄膜。本发明将传统烧结方法中的固固体系转变为固液体系，传质和反应速率更快；同时能够避免传统高温烧结(>1200℃)带来的变形、元素偏析等问题；节约能源且方法简单、成本低廉，不需要特定的仪器设备，易于实现大规模制备。
Low-temperature melt reaction preparation method of compact ceramic film
The invention provides a low-temperature melt reaction method for preparing a compact ceramic film. According to the preparation method, the low-temperature melt is introduced, so that the high-melting-point reactant is dissolved in the molten salt and reacts, the target product crystal is separated out after supersaturation and gradually grows and continuously grows, and finally, the compact ceramic film of 1-10 microns can be obtained. According to the invention, a solid-solid system in a traditional sintering method is converted into a solid-liquid system, so that the mass transfer rate and the reaction rate are higher; meanwhile, traditional high-temperature sintering (gt; the problems of deformation, element segregation and the like caused by high temperature (1200 DEG C) are solved; and the method is simple and low in cost, does not need specific instruments and equipment, and is easy to realize large-scale preparation.
本发明提供了一种低温熔体反应法制备致密陶瓷薄膜。本发明引入低温熔体，使高熔点的反应物溶解在该熔融盐中并发生反应，达到过饱和后析出目标产物晶体并逐渐长大、连生，最后可获得1～10μm的致密陶瓷薄膜。本发明将传统烧结方法中的固固体系转变为固液体系，传质和反应速率更快；同时能够避免传统高温烧结(>1200℃)带来的变形、元素偏析等问题；节约能源且方法简单、成本低廉，不需要特定的仪器设备，易于实现大规模制备。
Low-temperature melt reaction preparation method of compact ceramic film
一种致密陶瓷薄膜的低温熔体反应制备方法
ZHU XUEFENG (Autor:in) / FENG QIUXIA (Autor:in) / ZHANG LIMING (Autor:in) / ZHANG PENG (Autor:in) / YANG WEISHEN (Autor:in)
18.06.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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