Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention discloses aluminum nitride-based conductive ceramic and a preparation method thereof. Mixing aluminum nitride powder, metal powder, sintering aid powder, an organic solvent, a binder and a dispersing agent through a ball mill to obtain mixed slurry; carrying out vacuum defoaming treatment on the mixed slurry, and molding to obtain a first biscuit; the first biscuit is placed in a glue discharging furnace for glue discharging treatment, and a ceramic biscuit is obtained; placing the ceramic biscuit subjected to glue removal in a high-temperature furnace, and performing high-temperature firing in a nitrogen atmosphere to obtain the co-crystallized aluminum nitride-based conductive ceramic material. Crushing and forming the co-crystallized aluminum nitride-based conductive ceramic material to obtain a second biscuit; the second biscuit is placed in a hot-pressing oscillation sintering furnace for hot-pressing sintering, and the compact eutectic aluminum nitride-based conductive ceramic material is obtained. According to the invention, the growth of aluminum nitride crystal grains and metal crystals is effectively inhibited, so that the aluminum nitride crystal grains and the metal crystals are effectively and mutually infiltrated and diffused, and the sintered ceramic is uniform in heat conduction.
本发明公开了一种氮化铝基导电陶瓷及其制备方法。将氮化铝粉体、金属粉体、助烧剂粉体、有机溶剂、粘结剂、分散剂通过球磨机混合，得到混合浆料；对混合浆料进行真空除泡处理、成型，得到第一素坯；将第一素坯置于排胶炉中进行排胶处理，获得陶瓷素坯；将排胶后的陶瓷素坯置于高温炉中，在氮气气氛下进行高温烧制，得到共晶化的氮化铝基导电陶瓷材料；将共晶化的氮化铝基导电陶瓷材料进行破碎、成型，得到第二素坯；将第二素坯放置在热压震荡烧结炉中进行热压烧结，得到致密的共晶氮化铝基导电陶瓷材料。本发明有效抑制氮化铝晶粒和金属晶体的生长,使氮化铝晶粒和金属晶体之间进行有效的相互浸润、扩散，使得烧结的陶瓷导热均匀。
The invention discloses aluminum nitride-based conductive ceramic and a preparation method thereof. Mixing aluminum nitride powder, metal powder, sintering aid powder, an organic solvent, a binder and a dispersing agent through a ball mill to obtain mixed slurry; carrying out vacuum defoaming treatment on the mixed slurry, and molding to obtain a first biscuit; the first biscuit is placed in a glue discharging furnace for glue discharging treatment, and a ceramic biscuit is obtained; placing the ceramic biscuit subjected to glue removal in a high-temperature furnace, and performing high-temperature firing in a nitrogen atmosphere to obtain the co-crystallized aluminum nitride-based conductive ceramic material. Crushing and forming the co-crystallized aluminum nitride-based conductive ceramic material to obtain a second biscuit; the second biscuit is placed in a hot-pressing oscillation sintering furnace for hot-pressing sintering, and the compact eutectic aluminum nitride-based conductive ceramic material is obtained. According to the invention, the growth of aluminum nitride crystal grains and metal crystals is effectively inhibited, so that the aluminum nitride crystal grains and the metal crystals are effectively and mutually infiltrated and diffused, and the sintered ceramic is uniform in heat conduction.
本发明公开了一种氮化铝基导电陶瓷及其制备方法。将氮化铝粉体、金属粉体、助烧剂粉体、有机溶剂、粘结剂、分散剂通过球磨机混合，得到混合浆料；对混合浆料进行真空除泡处理、成型，得到第一素坯；将第一素坯置于排胶炉中进行排胶处理，获得陶瓷素坯；将排胶后的陶瓷素坯置于高温炉中，在氮气气氛下进行高温烧制，得到共晶化的氮化铝基导电陶瓷材料；将共晶化的氮化铝基导电陶瓷材料进行破碎、成型，得到第二素坯；将第二素坯放置在热压震荡烧结炉中进行热压烧结，得到致密的共晶氮化铝基导电陶瓷材料。本发明有效抑制氮化铝晶粒和金属晶体的生长,使氮化铝晶粒和金属晶体之间进行有效的相互浸润、扩散，使得烧结的陶瓷导热均匀。
Aluminum nitride-based conductive ceramic and preparation method thereof
一种氮化铝基导电陶瓷及其制备方法
03.02.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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