Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Silicon oxynitride wave-transparent ceramic and preparation method thereof
The invention relates to a preparation method of high-strength silicon oxynitride wave-transparent ceramic, which comprises the following steps: uniformly mixing the following raw materials in percentage by mass: 60-80% of silicon nitride powder, 20-40% of silicon dioxide powder, 1-15% of sintering aid and 1-20% of additive, carrying out spray granulation, carrying out dry pressing molding on the granulated powder, further carrying out cold isostatic pressing treatment, and discharging rubber, thereby obtaining the high-strength silicon oxynitride wave-transparent ceramic. And raising the temperature of the biscuit subjected to glue removal to 1650-1750 DEG C, and carrying out air pressure sintering under the nitrogen pressure of 3.0-8.0 MPa. The microstructure of the silicon oxynitride ceramic prepared by the method is formed by bridging columnar crystals with higher length-diameter ratios, so that the mechanical property, the wave-transparent property and the high temperature resistance of the silicon oxynitride material are synergistically enhanced, and the silicon oxynitride ceramic can be used as a wave-transparent ceramic material with integrated structure and function. The method is simple, raw materials are easy to obtain, pollution is avoided, the production cost is low, and the method has great industrialization prospects.
本发明涉及一种高强度氮氧化硅透波陶瓷的制备方法，包括：按照质量百分比计，将原料60%‑80%的氮化硅粉体和20%‑40%的二氧化硅粉，1~15%的烧结助剂，1~20%的添加剂混合均匀，进行喷雾造粒，将造粒粉先干压成型，再进一步冷等静压处理，然后排胶，将经过排胶的素坯升温至1650~1750℃，氮气压力3.0~8.0 MPa进行气压烧结。本发明制备的氮氧化硅陶瓷，微观结构是由具有较高长径比柱状晶体相互桥接组成，从而使氮氧化硅材料的力学性能、透波性能、耐高温性能协同增强，可以作为结构功能一体化的透波陶瓷材料。本发明工艺方法简单，原料易得，无污染，生产成本低，极具工业化前景。
Silicon oxynitride wave-transparent ceramic and preparation method thereof
The invention relates to a preparation method of high-strength silicon oxynitride wave-transparent ceramic, which comprises the following steps: uniformly mixing the following raw materials in percentage by mass: 60-80% of silicon nitride powder, 20-40% of silicon dioxide powder, 1-15% of sintering aid and 1-20% of additive, carrying out spray granulation, carrying out dry pressing molding on the granulated powder, further carrying out cold isostatic pressing treatment, and discharging rubber, thereby obtaining the high-strength silicon oxynitride wave-transparent ceramic. And raising the temperature of the biscuit subjected to glue removal to 1650-1750 DEG C, and carrying out air pressure sintering under the nitrogen pressure of 3.0-8.0 MPa. The microstructure of the silicon oxynitride ceramic prepared by the method is formed by bridging columnar crystals with higher length-diameter ratios, so that the mechanical property, the wave-transparent property and the high temperature resistance of the silicon oxynitride material are synergistically enhanced, and the silicon oxynitride ceramic can be used as a wave-transparent ceramic material with integrated structure and function. The method is simple, raw materials are easy to obtain, pollution is avoided, the production cost is low, and the method has great industrialization prospects.
本发明涉及一种高强度氮氧化硅透波陶瓷的制备方法，包括：按照质量百分比计，将原料60%‑80%的氮化硅粉体和20%‑40%的二氧化硅粉，1~15%的烧结助剂，1~20%的添加剂混合均匀，进行喷雾造粒，将造粒粉先干压成型，再进一步冷等静压处理，然后排胶，将经过排胶的素坯升温至1650~1750℃，氮气压力3.0~8.0 MPa进行气压烧结。本发明制备的氮氧化硅陶瓷，微观结构是由具有较高长径比柱状晶体相互桥接组成，从而使氮氧化硅材料的力学性能、透波性能、耐高温性能协同增强，可以作为结构功能一体化的透波陶瓷材料。本发明工艺方法简单，原料易得，无污染，生产成本低，极具工业化前景。
Silicon oxynitride wave-transparent ceramic and preparation method thereof
一种氮氧化硅透波陶瓷及其制备方法
GUAN JING (Autor:in) / ZHAO XIANGNAN (Autor:in) / RONG YAHONG (Autor:in) / LI XU (Autor:in)
06.09.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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