Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-density alumina fiber reinforced alumina ceramic-based composite material and low-temperature preparation method thereof
The invention provides a high-density prepared alumina fiber reinforced alumina ceramic-based composite material and a low-temperature preparation method thereof. The method comprises the following steps: pretreating an alumina fiber preform to remove glue; preparing a lanthanum phosphate interface solution, fully infiltrating the pretreated alumina fiber preform into the lanthanum phosphate interface solution for vacuum impregnation, taking out, standing, drying at a low temperature, presintering at a low temperature, and circulating for multiple times until an interface layer reaches a set thickness, so as to obtain a preform containing a lanthanum phosphate interface layer; preparing aluminum sol containing lithium fluoride, carrying out vacuum impregnation on the preform containing the lanthanum phosphate interface layer in the aluminum sol containing lithium fluoride, taking out, standing, drying at a low temperature, presintering at a low temperature, circulating for multiple times until the weight increment is less than 1wt%, and carrying out normal-pressure sintering in an air atmosphere, so as to obtain the lithium-ion battery cathode material. The alumina fiber reinforced alumina ceramic-based composite material containing the lanthanum phosphate interface layer is obtained.
本发明提供了一种高致密制备氧化铝纤维增强氧化铝陶瓷基复合材料及其低温制备方法。该方法包括对氧化铝纤维预制体进行预处理除胶；制备磷酸镧界面溶液，将预处理后的氧化铝纤维预制体充分浸润在磷酸镧界面溶液中进行真空浸渍，取出后进行静置低温烘干、低温预烧结，并循环多次，直至界面层达到设定厚度，得到含有磷酸镧界面层的预制体；制备含氟化锂的铝溶胶，将含有磷酸镧界面层的预制体在含氟化锂的铝溶胶中进行真空浸渍，取出后静置低温烘干，低温预烧结，循环多次后，直至增重量小于1wt％，进行空气气氛下的常压烧结，得到含有磷酸镧界面层的氧化铝纤维增强氧化铝陶瓷基复合材料。
High-density alumina fiber reinforced alumina ceramic-based composite material and low-temperature preparation method thereof
The invention provides a high-density prepared alumina fiber reinforced alumina ceramic-based composite material and a low-temperature preparation method thereof. The method comprises the following steps: pretreating an alumina fiber preform to remove glue; preparing a lanthanum phosphate interface solution, fully infiltrating the pretreated alumina fiber preform into the lanthanum phosphate interface solution for vacuum impregnation, taking out, standing, drying at a low temperature, presintering at a low temperature, and circulating for multiple times until an interface layer reaches a set thickness, so as to obtain a preform containing a lanthanum phosphate interface layer; preparing aluminum sol containing lithium fluoride, carrying out vacuum impregnation on the preform containing the lanthanum phosphate interface layer in the aluminum sol containing lithium fluoride, taking out, standing, drying at a low temperature, presintering at a low temperature, circulating for multiple times until the weight increment is less than 1wt%, and carrying out normal-pressure sintering in an air atmosphere, so as to obtain the lithium-ion battery cathode material. The alumina fiber reinforced alumina ceramic-based composite material containing the lanthanum phosphate interface layer is obtained.
本发明提供了一种高致密制备氧化铝纤维增强氧化铝陶瓷基复合材料及其低温制备方法。该方法包括对氧化铝纤维预制体进行预处理除胶；制备磷酸镧界面溶液，将预处理后的氧化铝纤维预制体充分浸润在磷酸镧界面溶液中进行真空浸渍，取出后进行静置低温烘干、低温预烧结，并循环多次，直至界面层达到设定厚度，得到含有磷酸镧界面层的预制体；制备含氟化锂的铝溶胶，将含有磷酸镧界面层的预制体在含氟化锂的铝溶胶中进行真空浸渍，取出后静置低温烘干，低温预烧结，循环多次后，直至增重量小于1wt％，进行空气气氛下的常压烧结，得到含有磷酸镧界面层的氧化铝纤维增强氧化铝陶瓷基复合材料。
High-density alumina fiber reinforced alumina ceramic-based composite material and low-temperature preparation method thereof
一种高致密度氧化铝纤维增强氧化铝陶瓷基复合材料及其低温制备方法
LUO FA (Autor:in) / JING LINHAN (Autor:in) / XUE YULONG (Autor:in) / WANG XINYI (Autor:in)
11.06.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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