Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Cr2AlC/MXene composite material and preparation method thereof
The invention relates to a preparation method of a Cr2AlC/MXene composite material. The method comprises the following steps: (1) preparation of metal ceramic MAX: mixing M, Al and C powder, and carrying out high-temperature pressureless sintering to obtain a block, wherein M is a transition metal; (2) preparation of MXene: grinding the MAX block prepared in the step (1) into powder, corroding thepowder with a hydrochloric acid and lithium fluoride mixed solution or hydrofluoric acid, washing the corrosion product with clear water multiple times, putting the washed corrosion product into a vacuum drying oven, and drying into powder to obtain MXene powder; and (3) preparation of Cr2AlC/MXene composite material: mixing the MXene powder prepared in the step (2) with Cr2AlC ceramic powder, putting the mixture into a ball milling tank, adding absolute ethyl alcohol, carrying out wet mixing, and drying the mixed material by using a rotary evaporator to obtain the Cr2AlC/MXene composite material. According to the invention, multiple layers of MXene which are originally produced in a water environment are compounded with a Cr2AlC material to form the Cr2AlC/Mxene composite material, so that the bending strength and the fracture toughness of the Cr2AlC/Mxene composite material are remarkably improved, and the mechanical property of the Cr2AlC/Mxene composite material is excellent.
本发明涉及一种Cr2AlC/MXene复合材料的制备方法，包括以下步骤：（1）金属陶瓷MAX的制备：将M、Al、C粉末混合，通过高温无压烧结制得块体，所述M为过渡金属；（2）MXene的制备：将步骤（1）中制得的MAX块体磨粉，使用盐酸与氟化锂混合液或氢氟酸腐蚀，多次清水洗涤腐蚀产物，然后放入真空干燥箱中干燥成粉末得到MXene粉体；（3）Cr2AlC/MXene复合材料的制备：经步骤（2）中制得的MXene粉体与Cr2AlC陶瓷粉体进行混合，放入球磨罐中，加入无水乙醇湿混，再将混过的料采用旋转蒸发仪干燥，即得。该材料将原本在水环境中生产的多层MXene与Cr2AlC材料复合起来，形成Cr2AlC/Mxene复合材料，Cr2AlC/Mxene复合材料弯曲强度、断裂韧性显著提高，力学性能优异。
Cr2AlC/MXene composite material and preparation method thereof
The invention relates to a preparation method of a Cr2AlC/MXene composite material. The method comprises the following steps: (1) preparation of metal ceramic MAX: mixing M, Al and C powder, and carrying out high-temperature pressureless sintering to obtain a block, wherein M is a transition metal; (2) preparation of MXene: grinding the MAX block prepared in the step (1) into powder, corroding thepowder with a hydrochloric acid and lithium fluoride mixed solution or hydrofluoric acid, washing the corrosion product with clear water multiple times, putting the washed corrosion product into a vacuum drying oven, and drying into powder to obtain MXene powder; and (3) preparation of Cr2AlC/MXene composite material: mixing the MXene powder prepared in the step (2) with Cr2AlC ceramic powder, putting the mixture into a ball milling tank, adding absolute ethyl alcohol, carrying out wet mixing, and drying the mixed material by using a rotary evaporator to obtain the Cr2AlC/MXene composite material. According to the invention, multiple layers of MXene which are originally produced in a water environment are compounded with a Cr2AlC material to form the Cr2AlC/Mxene composite material, so that the bending strength and the fracture toughness of the Cr2AlC/Mxene composite material are remarkably improved, and the mechanical property of the Cr2AlC/Mxene composite material is excellent.
本发明涉及一种Cr2AlC/MXene复合材料的制备方法，包括以下步骤：（1）金属陶瓷MAX的制备：将M、Al、C粉末混合，通过高温无压烧结制得块体，所述M为过渡金属；（2）MXene的制备：将步骤（1）中制得的MAX块体磨粉，使用盐酸与氟化锂混合液或氢氟酸腐蚀，多次清水洗涤腐蚀产物，然后放入真空干燥箱中干燥成粉末得到MXene粉体；（3）Cr2AlC/MXene复合材料的制备：经步骤（2）中制得的MXene粉体与Cr2AlC陶瓷粉体进行混合，放入球磨罐中，加入无水乙醇湿混，再将混过的料采用旋转蒸发仪干燥，即得。该材料将原本在水环境中生产的多层MXene与Cr2AlC材料复合起来，形成Cr2AlC/Mxene复合材料，Cr2AlC/Mxene复合材料弯曲强度、断裂韧性显著提高，力学性能优异。
Cr2AlC/MXene composite material and preparation method thereof
一种Cr2AlC/MXene复合材料及其制备方法
YING GUOBING (Autor:in) / HU CONG (Autor:in) / LIU LU (Autor:in) / WU YIRAN (Autor:in) / ZHANG JIANXIN (Autor:in)
29.12.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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