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Densified silicon nitride ceramic material and preparation method thereof
The invention relates to the technical field of silicon nitride ceramic preparation, and particularly discloses a densified silicon nitride ceramic material and a preparation method thereof. The preparation method of the densified silicon nitride ceramic material comprises the following steps: 1, dispersing and mixing modified carbon nanotubes and modified Si3N4 in a solvent, carrying out a heating reflux reaction, and separating after the reaction is finished to obtain a composite material; 2, mixing a sintering aid with the composite material obtained in the step 1, and carrying out ball milling for 1-2 hours to obtain slurry; 3, placing the slurry obtained in the step 2 in a mold, and solidifying for 1-3 h to obtain a green body; and 4, sintering the green body obtained in the step 3 at high temperature and high pressure in a nitrogen atmosphere to obtain the densified silicon nitride ceramic, wherein the mass ratio of the modified Si3N4 to the modified carbon nanotubes is 1: (3-5). The densified silicon nitride ceramic material disclosed by the invention has the advantages that the mechanical strength of the material is improved while relatively high density is ensured.
本申请涉及氮化硅陶瓷制备技术领域，具体公开了一种致密化氮化硅陶瓷材料及其制备方法。一种致密化氮化硅陶瓷材料的制备方法为：步骤1：将改性碳纳米管和改性Si3N4于溶剂中分散混合，进行加热回流反应，反应结束后分离得到复合材料；步骤2：将助烧剂与步骤1得到的复合材料混合，球磨1‑2h，得到浆料；步骤3：将步骤2得到的浆料置于模具中固化1‑3h，得到坯体；步骤4：将步骤3得到的坯体于氮气气氛下高温高压烧结，得到致密化氮化硅陶瓷；其中改性Si3N4和改性碳纳米管的质量比为1:(3‑5)。本申请的致密化氮化硅陶瓷材料具有在保证致密度较高的同时，提升材料力学强度的优点。
Densified silicon nitride ceramic material and preparation method thereof
The invention relates to the technical field of silicon nitride ceramic preparation, and particularly discloses a densified silicon nitride ceramic material and a preparation method thereof. The preparation method of the densified silicon nitride ceramic material comprises the following steps: 1, dispersing and mixing modified carbon nanotubes and modified Si3N4 in a solvent, carrying out a heating reflux reaction, and separating after the reaction is finished to obtain a composite material; 2, mixing a sintering aid with the composite material obtained in the step 1, and carrying out ball milling for 1-2 hours to obtain slurry; 3, placing the slurry obtained in the step 2 in a mold, and solidifying for 1-3 h to obtain a green body; and 4, sintering the green body obtained in the step 3 at high temperature and high pressure in a nitrogen atmosphere to obtain the densified silicon nitride ceramic, wherein the mass ratio of the modified Si3N4 to the modified carbon nanotubes is 1: (3-5). The densified silicon nitride ceramic material disclosed by the invention has the advantages that the mechanical strength of the material is improved while relatively high density is ensured.
本申请涉及氮化硅陶瓷制备技术领域，具体公开了一种致密化氮化硅陶瓷材料及其制备方法。一种致密化氮化硅陶瓷材料的制备方法为：步骤1：将改性碳纳米管和改性Si3N4于溶剂中分散混合，进行加热回流反应，反应结束后分离得到复合材料；步骤2：将助烧剂与步骤1得到的复合材料混合，球磨1‑2h，得到浆料；步骤3：将步骤2得到的浆料置于模具中固化1‑3h，得到坯体；步骤4：将步骤3得到的坯体于氮气气氛下高温高压烧结，得到致密化氮化硅陶瓷；其中改性Si3N4和改性碳纳米管的质量比为1:(3‑5)。本申请的致密化氮化硅陶瓷材料具有在保证致密度较高的同时，提升材料力学强度的优点。
Densified silicon nitride ceramic material and preparation method thereof
一种致密化氮化硅陶瓷材料及其制备方法
CHEN HAISHENG (Autor:in) / ZHOU SHENGBIN (Autor:in)
11.06.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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