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Silicon nitride-quartz hollow sphere ceramic and preparation method thereof
The invention discloses a silicon nitride-quartz hollow sphere ceramic and a preparation method thereof, and belongs to the technical field of silicon nitride ceramics. The silicon nitride-quartz hollow sphere ceramic comprises the following components (in parts by mass): 80-90 parts of silicon nitride powder, 5-10 parts of rare earth oxide powder and 5-10 parts of quartz powder. The quartz powder is quartz hollow powder. According to the preparation method of the silicon nitride-quartz hollow sphere ceramic, a quartz hollow sphere reacts with silicon nitride to grow a long columnar crystal with a large length-diameter ratio. The silicon nitride-quartz hollow sphere ceramic has the characteristics of low density, high porosity, high temperature resistance, high strength, low dielectric constant, small dielectric loss and the like, and is a long cylindrical crystal with a large length-to-diameter ratio. The prepared material has substantive advantages, the density is only 1.45-1.65 g/cm<3>, the strength can be larger than or equal to 70 MPa, the dielectric constant is 2.5-3.5, and the dielectric loss is smaller than or equal to 0.003.
本发明公开了一种氮化硅‑石英空心球陶瓷及制备方法，属于氮化硅陶瓷技术领域，包括以下组份(质量份数)：氮化硅粉体80‑90份，稀土氧化物粉体5‑10份，石英粉体5‑10份，所述的石英粉体为石英空心粉体，氮化硅‑石英空心球陶瓷制备方法利用石英空心球与氮化硅反应，生长为长径比较大的长柱状晶体，本发明的有益效果是：具有低密度、高气孔率、耐高温、高强度、介电常数低以及介质损耗小等特性，长径比较大的长柱状晶体，制备的材料具有实质性的优势，密度仅为1.45‑1.65g/cm3，强度可达≥70MPa，介电常数为：2.5‑3.5，介电损耗≤0.003。
Silicon nitride-quartz hollow sphere ceramic and preparation method thereof
The invention discloses a silicon nitride-quartz hollow sphere ceramic and a preparation method thereof, and belongs to the technical field of silicon nitride ceramics. The silicon nitride-quartz hollow sphere ceramic comprises the following components (in parts by mass): 80-90 parts of silicon nitride powder, 5-10 parts of rare earth oxide powder and 5-10 parts of quartz powder. The quartz powder is quartz hollow powder. According to the preparation method of the silicon nitride-quartz hollow sphere ceramic, a quartz hollow sphere reacts with silicon nitride to grow a long columnar crystal with a large length-diameter ratio. The silicon nitride-quartz hollow sphere ceramic has the characteristics of low density, high porosity, high temperature resistance, high strength, low dielectric constant, small dielectric loss and the like, and is a long cylindrical crystal with a large length-to-diameter ratio. The prepared material has substantive advantages, the density is only 1.45-1.65 g/cm<3>, the strength can be larger than or equal to 70 MPa, the dielectric constant is 2.5-3.5, and the dielectric loss is smaller than or equal to 0.003.
本发明公开了一种氮化硅‑石英空心球陶瓷及制备方法，属于氮化硅陶瓷技术领域，包括以下组份(质量份数)：氮化硅粉体80‑90份，稀土氧化物粉体5‑10份，石英粉体5‑10份，所述的石英粉体为石英空心粉体，氮化硅‑石英空心球陶瓷制备方法利用石英空心球与氮化硅反应，生长为长径比较大的长柱状晶体，本发明的有益效果是：具有低密度、高气孔率、耐高温、高强度、介电常数低以及介质损耗小等特性，长径比较大的长柱状晶体，制备的材料具有实质性的优势，密度仅为1.45‑1.65g/cm3，强度可达≥70MPa，介电常数为：2.5‑3.5，介电损耗≤0.003。
Silicon nitride-quartz hollow sphere ceramic and preparation method thereof
一种氮化硅-石英空心球陶瓷及制备方法
LIU WENHUA (author)
2021-11-23
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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