Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Nanocrystalline alumina ceramic and preparation method thereof
The invention relates to nanocrystalline aluminum oxide ceramic and a preparation method thereof.The method comprises the steps that acid liquor is added into pseudo-boehmite suspension liquid, stirring is conducted, and evenly-dispersed aluminum oxide sol is obtained; concentrating and aging the alumina sol to obtain alumina gel; drying the alumina gel to obtain alumina xerogel with plasticity; and carrying out compression molding on the alumina xerogel, and then carrying out segmented calcination treatment so as to enable the grain size to be small, thereby obtaining the nanocrystalline alumina ceramic. The technical problem that the preparation cost of the existing nanocrystalline aluminum oxide ceramic is relatively high is solved.
本申请涉及一种纳米晶氧化铝陶瓷及其制备方法，所述方法包括：向拟薄水铝石悬浮液中加入酸液，并进行搅拌，得到均匀分散的氧化铝溶胶；将所述氧化铝溶胶进行浓缩老化，得到氧化铝凝胶；将所述氧化铝凝胶进行干燥，得到具有塑性的氧化铝干凝胶；对所述氧化铝干凝胶进行压制成型，后进行分段煅烧处理，以使晶粒尺寸细小，得到纳米晶氧化铝陶瓷。本申请内容解决了现有纳米晶氧化铝陶瓷的制备成本较高的技术问题。
Nanocrystalline alumina ceramic and preparation method thereof
The invention relates to nanocrystalline aluminum oxide ceramic and a preparation method thereof.The method comprises the steps that acid liquor is added into pseudo-boehmite suspension liquid, stirring is conducted, and evenly-dispersed aluminum oxide sol is obtained; concentrating and aging the alumina sol to obtain alumina gel; drying the alumina gel to obtain alumina xerogel with plasticity; and carrying out compression molding on the alumina xerogel, and then carrying out segmented calcination treatment so as to enable the grain size to be small, thereby obtaining the nanocrystalline alumina ceramic. The technical problem that the preparation cost of the existing nanocrystalline aluminum oxide ceramic is relatively high is solved.
本申请涉及一种纳米晶氧化铝陶瓷及其制备方法，所述方法包括：向拟薄水铝石悬浮液中加入酸液，并进行搅拌，得到均匀分散的氧化铝溶胶；将所述氧化铝溶胶进行浓缩老化，得到氧化铝凝胶；将所述氧化铝凝胶进行干燥，得到具有塑性的氧化铝干凝胶；对所述氧化铝干凝胶进行压制成型，后进行分段煅烧处理，以使晶粒尺寸细小，得到纳米晶氧化铝陶瓷。本申请内容解决了现有纳米晶氧化铝陶瓷的制备成本较高的技术问题。
Nanocrystalline alumina ceramic and preparation method thereof
一种纳米晶氧化铝陶瓷及其制备方法
LI XIAOXING (Autor:in) / LI DONGHONG (Autor:in) / YANG FENGHAO (Autor:in) / WANG JIN (Autor:in) / ZHANG YANYAN (Autor:in) / JIA CHUNYAN (Autor:in)
23.01.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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