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Boron nitride-based ceramic composite material and preparation method thereof
The invention belongs to the technical field of ceramic composite materials. The invention provides a boron nitride-based ceramic composite material and a preparation method thereof. The preparation method comprises the following steps: carrying out ball milling on hexagonal boron nitride, silicon dioxide, a metal oxide and a solvent, and then removing the solvent to obtain ball-milled powder; the ball-milled powder is sequentially subjected to drying and refining treatment, and mixed powder is obtained; the mixed powder is sequentially subjected to pre-pressing forming and sintering, and the boron nitride-based ceramic composite material is obtained. The boron nitride-based ceramic composite material prepared by the method is relatively high in density and excellent in mechanical property, thermal property and dielectric property, the relative density is 94.5-96%, the bending strength is 225-235 MPa, the dielectric constant is 4.10-4.12 F/m, the dielectric loss tangent value is 0.01, and the preparation method is simple, high in preparation speed and suitable for industrial application.
本发明属于陶瓷复合材料技术领域。本发明提供了一种氮化硼基陶瓷复合材料及其制备方法。制备方法包含如下步骤：将六方氮化硼、二氧化硅、金属氧化物和溶剂进行球磨后去除溶剂，得到球磨粉体；将球磨粉体顺次进行干燥、细化处理，得到混合粉体；将混合粉体顺次进行预压成型、烧结，得到氮化硼基陶瓷复合材料。本发明制得的氮化硼基陶瓷复合材料的致密度较高，力学性能、热学性能和介电性能优异，其相对密度为94.5～96％，抗弯强度为225～235MPa，介电常数为4.10～4.12F/m，介电损耗正切值为0.01，而且该制备方法简单，制备速度快，适用于工业化应用。
Boron nitride-based ceramic composite material and preparation method thereof
The invention belongs to the technical field of ceramic composite materials. The invention provides a boron nitride-based ceramic composite material and a preparation method thereof. The preparation method comprises the following steps: carrying out ball milling on hexagonal boron nitride, silicon dioxide, a metal oxide and a solvent, and then removing the solvent to obtain ball-milled powder; the ball-milled powder is sequentially subjected to drying and refining treatment, and mixed powder is obtained; the mixed powder is sequentially subjected to pre-pressing forming and sintering, and the boron nitride-based ceramic composite material is obtained. The boron nitride-based ceramic composite material prepared by the method is relatively high in density and excellent in mechanical property, thermal property and dielectric property, the relative density is 94.5-96%, the bending strength is 225-235 MPa, the dielectric constant is 4.10-4.12 F/m, the dielectric loss tangent value is 0.01, and the preparation method is simple, high in preparation speed and suitable for industrial application.
本发明属于陶瓷复合材料技术领域。本发明提供了一种氮化硼基陶瓷复合材料及其制备方法。制备方法包含如下步骤：将六方氮化硼、二氧化硅、金属氧化物和溶剂进行球磨后去除溶剂，得到球磨粉体；将球磨粉体顺次进行干燥、细化处理，得到混合粉体；将混合粉体顺次进行预压成型、烧结，得到氮化硼基陶瓷复合材料。本发明制得的氮化硼基陶瓷复合材料的致密度较高，力学性能、热学性能和介电性能优异，其相对密度为94.5～96％，抗弯强度为225～235MPa，介电常数为4.10～4.12F/m，介电损耗正切值为0.01，而且该制备方法简单，制备速度快，适用于工业化应用。
Boron nitride-based ceramic composite material and preparation method thereof
一种氮化硼基陶瓷复合材料及其制备方法
WANG HAILONG (Autor:in) / WANG CHEN (Autor:in) / SONG BO (Autor:in) / YAN NING (Autor:in) / XU HONGLIANG (Autor:in) / LU HONGXIA (Autor:in)
01.09.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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