Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing aluminum nitride ceramic through in-situ chemical deposition coating and aluminum nitride ceramic
The invention discloses a method for preparing aluminum nitride ceramic through in-situ chemical deposition coating and the aluminum nitride ceramic, and belongs to the technical field of ceramic tape casting. The preparation method of the aluminum nitride ceramic comprises the following steps: dissolving aluminum nitride powder in first ethanol, then continuously adding yttrium salt and a first dispersant, then adjusting the pH value to 6.5-10.5, and then stirring for reaction to obtain aluminum nitride powder coated with yttrium salt on the surface; calcining the aluminum nitride powder of which the surface is coated with the yttrium salt to obtain aluminum nitride powder of which the surface is coated with yttrium oxide in situ; mixing the aluminum nitride powder of which the surface is coated with yttrium oxide in situ, a solvent, a second dispersing agent, a plasticizer and a binder, and performing ball milling to obtain ceramic slurry; carrying out tape casting forming on the ceramic slurry through a tape casting forming machine to prepare an aluminum nitride ceramic green body; sequentially degreasing and sintering the aluminum nitride ceramic green body to obtain the aluminum nitride ceramic. The aluminum nitride ceramic obtained by the preparation method provided by the invention has excellent mechanical and thermal properties.
本发明公开一种原位化学沉积包覆制备氮化铝陶瓷的方法及氮化铝陶瓷，属于陶瓷流延成型技术领域。该氮化铝陶瓷的制备方法，包括：将氮化铝粉体溶于第一乙醇中，之后继续添加钇盐和第一分散剂，之后调节pH值至6.5‑10.5，之后搅拌反应得到表面包覆有钇盐的氮化铝粉体；将表面包覆有钇盐的氮化铝粉体煅烧得到表面原位包覆有氧化钇的氮化铝粉体；将表面原位包覆有氧化钇的氮化铝粉体、溶剂、第二分散剂、塑性剂和粘结剂混合并进行球磨得到陶瓷浆料；通过流延成形机对所述陶瓷浆料进行流延成形，制得氮化铝陶瓷生坯；将氮化铝陶瓷生坯依次进行脱脂和烧结制得氮化铝陶瓷。本发明提出的制备方法得到的氮化铝陶瓷具有优异的力学和热学性能。
Method for preparing aluminum nitride ceramic through in-situ chemical deposition coating and aluminum nitride ceramic
The invention discloses a method for preparing aluminum nitride ceramic through in-situ chemical deposition coating and the aluminum nitride ceramic, and belongs to the technical field of ceramic tape casting. The preparation method of the aluminum nitride ceramic comprises the following steps: dissolving aluminum nitride powder in first ethanol, then continuously adding yttrium salt and a first dispersant, then adjusting the pH value to 6.5-10.5, and then stirring for reaction to obtain aluminum nitride powder coated with yttrium salt on the surface; calcining the aluminum nitride powder of which the surface is coated with the yttrium salt to obtain aluminum nitride powder of which the surface is coated with yttrium oxide in situ; mixing the aluminum nitride powder of which the surface is coated with yttrium oxide in situ, a solvent, a second dispersing agent, a plasticizer and a binder, and performing ball milling to obtain ceramic slurry; carrying out tape casting forming on the ceramic slurry through a tape casting forming machine to prepare an aluminum nitride ceramic green body; sequentially degreasing and sintering the aluminum nitride ceramic green body to obtain the aluminum nitride ceramic. The aluminum nitride ceramic obtained by the preparation method provided by the invention has excellent mechanical and thermal properties.
本发明公开一种原位化学沉积包覆制备氮化铝陶瓷的方法及氮化铝陶瓷，属于陶瓷流延成型技术领域。该氮化铝陶瓷的制备方法，包括：将氮化铝粉体溶于第一乙醇中，之后继续添加钇盐和第一分散剂，之后调节pH值至6.5‑10.5，之后搅拌反应得到表面包覆有钇盐的氮化铝粉体；将表面包覆有钇盐的氮化铝粉体煅烧得到表面原位包覆有氧化钇的氮化铝粉体；将表面原位包覆有氧化钇的氮化铝粉体、溶剂、第二分散剂、塑性剂和粘结剂混合并进行球磨得到陶瓷浆料；通过流延成形机对所述陶瓷浆料进行流延成形，制得氮化铝陶瓷生坯；将氮化铝陶瓷生坯依次进行脱脂和烧结制得氮化铝陶瓷。本发明提出的制备方法得到的氮化铝陶瓷具有优异的力学和热学性能。
Method for preparing aluminum nitride ceramic through in-situ chemical deposition coating and aluminum nitride ceramic
原位化学沉积包覆制备氮化铝陶瓷的方法及氮化铝陶瓷
LIU ZHIZHE (Autor:in) / ZHOU SHIXIANG (Autor:in) / HU QIJIA (Autor:in) / LENG DIFEI (Autor:in) / ZHANG KOUXIAO (Autor:in) / QIU SAIXI (Autor:in)
12.11.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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