Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of high-toughness aluminum oxide ceramic
The invention relates to the field of ceramic materials, in particular to a preparation method of high-toughness aluminum oxide ceramic, which comprises the following steps: carrying out plasma treatment on carbon fibers, putting the carbon fibers subjected to plasma treatment into a precursor solution, carrying out dipping treatment, filtering out, heating to 1400-1450 DEG C, and carrying out heat preservation roasting for 2-3 hours, thereby obtaining the high-toughness aluminum oxide ceramic. Aluminum oxide, lanthanum trifluoride and a sintering aid are ball-milled and uniformly mixed and then are mixed and mixed with modified carbon fibers, a binder and a silane coupling agent, a rough ceramic blank is obtained by adopting a powder injection molding process, and the rough ceramic blank is degreased, gummed and sintered, and the prepared aluminum oxide ceramic has extremely high strength and fracture toughness and excellent thermal shock resistance.
本发明涉及陶瓷材料领域，具体为一种高韧性氧化铝陶瓷的制备方法，对碳纤维进行等离子处理，将经过等离子处理的碳纤维置于前驱体溶液中浸渍处理后滤出，升温至1400‑1450℃保温焙烧2‑3h，将氧化铝、三氟化镧、烧结助剂球磨混合均匀后再与改性碳纤维、粘结剂、硅烷偶联剂混合混炼，采用粉末注射成型工艺得到陶瓷粗坯，将陶瓷粗坯脱脂后排胶，烧结，本发明所制备的氧化铝陶瓷具有极高的强度及断裂韧性，而且抗热震性能优异。
Preparation method of high-toughness aluminum oxide ceramic
The invention relates to the field of ceramic materials, in particular to a preparation method of high-toughness aluminum oxide ceramic, which comprises the following steps: carrying out plasma treatment on carbon fibers, putting the carbon fibers subjected to plasma treatment into a precursor solution, carrying out dipping treatment, filtering out, heating to 1400-1450 DEG C, and carrying out heat preservation roasting for 2-3 hours, thereby obtaining the high-toughness aluminum oxide ceramic. Aluminum oxide, lanthanum trifluoride and a sintering aid are ball-milled and uniformly mixed and then are mixed and mixed with modified carbon fibers, a binder and a silane coupling agent, a rough ceramic blank is obtained by adopting a powder injection molding process, and the rough ceramic blank is degreased, gummed and sintered, and the prepared aluminum oxide ceramic has extremely high strength and fracture toughness and excellent thermal shock resistance.
本发明涉及陶瓷材料领域，具体为一种高韧性氧化铝陶瓷的制备方法，对碳纤维进行等离子处理，将经过等离子处理的碳纤维置于前驱体溶液中浸渍处理后滤出，升温至1400‑1450℃保温焙烧2‑3h，将氧化铝、三氟化镧、烧结助剂球磨混合均匀后再与改性碳纤维、粘结剂、硅烷偶联剂混合混炼，采用粉末注射成型工艺得到陶瓷粗坯，将陶瓷粗坯脱脂后排胶，烧结，本发明所制备的氧化铝陶瓷具有极高的强度及断裂韧性，而且抗热震性能优异。
Preparation method of high-toughness aluminum oxide ceramic
一种高韧性氧化铝陶瓷的制备方法
WANG YUDONG (Autor:in) / LIU MANLI (Autor:in) / FANG YINGJIE (Autor:in) / MA ZHENGYANG (Autor:in)
13.05.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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