Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Alumina ceramic powder and preparation process thereof
The invention relates to the technical field of aluminum oxide ceramics, and discloses aluminum oxide ceramic powder and a preparation process thereof.The porous aluminum oxide ceramics are prepared by taking titanium dioxide micro powder as a sintering aid, taking phthalic acid modified starch as a pore forming agent and a dispersing agent and performing ball milling, aging, mold pressing, sintering and other processes on the titanium dioxide micro powder and the phthalic acid modified starch and alpha-Al2O3 micro powder. The phthalic acid modified starch can be used for dispersing agents, improving the dispersity of the alpha-Al2O3 micro powder, reducing agglomeration of the alpha-Al2O3 micro powder, improving the uniformity of the aluminum oxide ceramic and improving the bending strength. The modified starch can be used as a pore-forming agent and is pyrolyzed during high-temperature sintering, a rich and uniform pore structure is left in the aluminum oxide ceramic, and the obtained aluminum oxide ceramic has high porosity and can keep good bending strength.
本发明涉及氧化铝陶瓷技术领域，且公开了一种氧化铝陶瓷粉体及其制备工艺，本发明以二氧化钛微粉作为烧结助剂，邻苯二甲酸改性淀粉作为造孔剂和分散剂，与α‑Al2O3微粉经过球磨、陈化、模压、烧结等工艺，经过制备了多孔的氧化铝陶瓷。邻苯二甲酸改性淀粉可以分散剂，改善α‑Al2O3微粉的分散性，减少其发生团聚，改善了氧化铝陶瓷的均匀性，提高了抗弯强度。改性淀粉可以作为造孔剂，在高温烧结时发生热解，在氧化铝陶瓷中留下丰富均匀的孔隙结构，得到的氧化铝陶瓷具有较高的孔隙率，并且可以保持很好的抗弯强度。
Alumina ceramic powder and preparation process thereof
The invention relates to the technical field of aluminum oxide ceramics, and discloses aluminum oxide ceramic powder and a preparation process thereof.The porous aluminum oxide ceramics are prepared by taking titanium dioxide micro powder as a sintering aid, taking phthalic acid modified starch as a pore forming agent and a dispersing agent and performing ball milling, aging, mold pressing, sintering and other processes on the titanium dioxide micro powder and the phthalic acid modified starch and alpha-Al2O3 micro powder. The phthalic acid modified starch can be used for dispersing agents, improving the dispersity of the alpha-Al2O3 micro powder, reducing agglomeration of the alpha-Al2O3 micro powder, improving the uniformity of the aluminum oxide ceramic and improving the bending strength. The modified starch can be used as a pore-forming agent and is pyrolyzed during high-temperature sintering, a rich and uniform pore structure is left in the aluminum oxide ceramic, and the obtained aluminum oxide ceramic has high porosity and can keep good bending strength.
本发明涉及氧化铝陶瓷技术领域，且公开了一种氧化铝陶瓷粉体及其制备工艺，本发明以二氧化钛微粉作为烧结助剂，邻苯二甲酸改性淀粉作为造孔剂和分散剂，与α‑Al2O3微粉经过球磨、陈化、模压、烧结等工艺，经过制备了多孔的氧化铝陶瓷。邻苯二甲酸改性淀粉可以分散剂，改善α‑Al2O3微粉的分散性，减少其发生团聚，改善了氧化铝陶瓷的均匀性，提高了抗弯强度。改性淀粉可以作为造孔剂，在高温烧结时发生热解，在氧化铝陶瓷中留下丰富均匀的孔隙结构，得到的氧化铝陶瓷具有较高的孔隙率，并且可以保持很好的抗弯强度。
Alumina ceramic powder and preparation process thereof
一种氧化铝陶瓷粉体及其制备工艺
LIN SHANGTAO (Autor:in) / PANG JIHONG (Autor:in) / DENG JIANG (Autor:in)
24.12.2024
Patent
Elektronische Ressource
Chinesisch
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