Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Boron nitride-based composite ceramic material and preparation method thereof
The invention provides a boron nitride-based multiphase ceramic material and a preparation method thereof, and relates to the technical field of superhard material synthesis. The preparation method of the boron nitride-based multiphase ceramic material provided by the invention comprises the following steps: carrying out first mixing on aluminum powder, a titanium silicon compound and boron nitride to obtain a mixed dry material; carrying out second mixing on the mixed dry material and a surface modifier, and sequentially dispersing and drying to obtain mixed powder; and sequentially carrying out thermal reduction treatment and hot pressed sintering on the mixed powder to obtain the boron nitride-based multiphase ceramic material. By introducing the surface modifier, the dispersity of the mixed dry material is improved, the soft agglomeration phenomenon of the mixed powder is improved, and uniform mass transfer in the sintering process is facilitated; the mixed powder is firstly subjected to thermal reduction treatment, adverse effects on the subsequent hot pressing sintering process are avoided, then the boron nitride-based multiphase ceramic material with excellent thermal stability is generated in situ through hot pressing sintering, the synthesis conditions are mild, and the method can be widely applied.
本发明提供了一种氮化硼基复相陶瓷材料及其制备方法，涉及超硬材料合成技术领域。本发明提供的氮化硼基复相陶瓷材料的制备方法，包括以下步骤：将铝粉、钛硅化合物和氮化硼进行第一混合，得到混合干料；将所述混合干料和表面改性剂进行第二混合，依次经分散和干燥，得到混合粉体；将所述混合粉体依次进行热还原处理和热压烧结，得到所述氮化硼基复相陶瓷材料。本发明通过引入表面改性剂，提高混合干料的分散性且改善混合粉体的软团聚现象，有利于烧结过程中的均匀传质；将混合粉体先进行热还原处理，避免对后续热压烧结过程造成不利影响，再通过热压烧结原位生成热稳定性优异的氮化硼基复相陶瓷材料，且合成条件温和，能够广泛应用。
Boron nitride-based composite ceramic material and preparation method thereof
The invention provides a boron nitride-based multiphase ceramic material and a preparation method thereof, and relates to the technical field of superhard material synthesis. The preparation method of the boron nitride-based multiphase ceramic material provided by the invention comprises the following steps: carrying out first mixing on aluminum powder, a titanium silicon compound and boron nitride to obtain a mixed dry material; carrying out second mixing on the mixed dry material and a surface modifier, and sequentially dispersing and drying to obtain mixed powder; and sequentially carrying out thermal reduction treatment and hot pressed sintering on the mixed powder to obtain the boron nitride-based multiphase ceramic material. By introducing the surface modifier, the dispersity of the mixed dry material is improved, the soft agglomeration phenomenon of the mixed powder is improved, and uniform mass transfer in the sintering process is facilitated; the mixed powder is firstly subjected to thermal reduction treatment, adverse effects on the subsequent hot pressing sintering process are avoided, then the boron nitride-based multiphase ceramic material with excellent thermal stability is generated in situ through hot pressing sintering, the synthesis conditions are mild, and the method can be widely applied.
本发明提供了一种氮化硼基复相陶瓷材料及其制备方法，涉及超硬材料合成技术领域。本发明提供的氮化硼基复相陶瓷材料的制备方法，包括以下步骤：将铝粉、钛硅化合物和氮化硼进行第一混合，得到混合干料；将所述混合干料和表面改性剂进行第二混合，依次经分散和干燥，得到混合粉体；将所述混合粉体依次进行热还原处理和热压烧结，得到所述氮化硼基复相陶瓷材料。本发明通过引入表面改性剂，提高混合干料的分散性且改善混合粉体的软团聚现象，有利于烧结过程中的均匀传质；将混合粉体先进行热还原处理，避免对后续热压烧结过程造成不利影响，再通过热压烧结原位生成热稳定性优异的氮化硼基复相陶瓷材料，且合成条件温和，能够广泛应用。
Boron nitride-based composite ceramic material and preparation method thereof
一种氮化硼基复相陶瓷材料及其制备方法
LI KAI (Autor:in) / CHEN CHAO (Autor:in) / ZHANG JUN (Autor:in) / MO PEICHENG (Autor:in) / CHEN JIARONG (Autor:in) / PAN XIAOYI (Autor:in)
28.05.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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