Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of alumina ceramic sintering aid
The invention discloses a preparation method of an alumina ceramic sintering aid, which comprises the following steps: S1, mixing magnesium nitrate, aluminum nitrate, tetraethyl orthosilicate, a dispersant, a monomer and a cross-linking agent with water to prepare a solution for later use; s2, heating the solution, adding an initiator, stirring and mixing until gel appears, and standing; and S3, drying the gel, and calcining to obtain the sintering aid. According to the preparation method disclosed by the invention, the uniformly mixed MgO-Al2O3-SiO2 composite powder is prepared by adopting a chemical method, so that the problem that the MgO powder, the Al2O3 powder and the SiO2 powder are mixed by mechanical ball milling traditionally to cause non-uniformity of each powder is avoided; and the prepared MgO-Al2O3-SiO2 composite powder is used as a sintering aid, and the alumina ceramic material is prepared by sintering under normal pressure, so that the sintering temperature is effectively reduced, ceramic grains are prevented from growing, the energy can be saved, and the ceramic performance can be improved.
本发明公开了一种氧化铝陶瓷烧结助剂的制备方法，包括以下步骤：S1：将硝酸镁、硝酸铝、正硅酸四乙酯、分散剂、单体和交联剂与水混合后，配置成溶液待用；S2：将溶液进行加热，加入引发剂搅拌混合直至凝胶出现，静置；S3：将凝胶烘干后煅烧，得到烧结助剂。本发明采用化学法制备混合均匀的MgO‑Al2O3‑SiO2复合粉体，避免传统的把MgO、Al2O3和SiO2粉体利用机械球磨混合而造成各粉体不均匀；并以制得的MgO‑Al2O3‑SiO2复合粉体为烧结助剂，在常压下烧结制备氧化铝陶瓷材料，有效降低烧结温度、防止陶瓷晶粒长大，既可节约能源也可以提高陶瓷性能。
Preparation method of alumina ceramic sintering aid
The invention discloses a preparation method of an alumina ceramic sintering aid, which comprises the following steps: S1, mixing magnesium nitrate, aluminum nitrate, tetraethyl orthosilicate, a dispersant, a monomer and a cross-linking agent with water to prepare a solution for later use; s2, heating the solution, adding an initiator, stirring and mixing until gel appears, and standing; and S3, drying the gel, and calcining to obtain the sintering aid. According to the preparation method disclosed by the invention, the uniformly mixed MgO-Al2O3-SiO2 composite powder is prepared by adopting a chemical method, so that the problem that the MgO powder, the Al2O3 powder and the SiO2 powder are mixed by mechanical ball milling traditionally to cause non-uniformity of each powder is avoided; and the prepared MgO-Al2O3-SiO2 composite powder is used as a sintering aid, and the alumina ceramic material is prepared by sintering under normal pressure, so that the sintering temperature is effectively reduced, ceramic grains are prevented from growing, the energy can be saved, and the ceramic performance can be improved.
本发明公开了一种氧化铝陶瓷烧结助剂的制备方法，包括以下步骤：S1：将硝酸镁、硝酸铝、正硅酸四乙酯、分散剂、单体和交联剂与水混合后，配置成溶液待用；S2：将溶液进行加热，加入引发剂搅拌混合直至凝胶出现，静置；S3：将凝胶烘干后煅烧，得到烧结助剂。本发明采用化学法制备混合均匀的MgO‑Al2O3‑SiO2复合粉体，避免传统的把MgO、Al2O3和SiO2粉体利用机械球磨混合而造成各粉体不均匀；并以制得的MgO‑Al2O3‑SiO2复合粉体为烧结助剂，在常压下烧结制备氧化铝陶瓷材料，有效降低烧结温度、防止陶瓷晶粒长大，既可节约能源也可以提高陶瓷性能。
Preparation method of alumina ceramic sintering aid
一种氧化铝陶瓷烧结助剂的制备方法
ZHOU BINBIN (Autor:in) / SUN YONGMING (Autor:in) / PAN GANGYUAN (Autor:in) / MAI SHUZHEN (Autor:in) / GUO HUA (Autor:in) / FANG QIANGANG (Autor:in)
26.05.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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