Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method for alumina ceramic matrix material
The invention provides a preparation method for an alumina ceramic matrix material. The preparation method comprises the following steps: weighing nanometer alumina powder, alumina powder, TiO2, CaO, MgO, SiO2 and polyacrylic acid (PAA), adding nanometer alumina powder into the alumina powder, pouring the obtained mixture into a ball milling device, adding TiO2, CaO, MgO, SiO2, polyacrylic acid (PAA) and water and carrying out ball milling in a planetary ball mill; then taking obtained powder out and pouring the powder into a reaction container; drying slurry obtained in the previous step, taking the dried slurry out, pressing the dried slurry by using a dry-pressing forming method so as to obtain a sheet, subjecting the sheet to cold isostatic pressing at a pressure of 200 to 240 MPa and maintaining the pressure for 30 to 300 s; and sintering the obtained sample at 1450 to 1500 DEG C, carrying out heat preservation for 2 to 3 h and cooling the sintered sample to room temperature so as to obtain the alumina ceramic matrix material. With the method provided by the invention, the alumina ceramic matrix material with a fine and uniform alumina crystal phase, high bending strength and breaking tenacity can be prepared.
Preparation method for alumina ceramic matrix material
The invention provides a preparation method for an alumina ceramic matrix material. The preparation method comprises the following steps: weighing nanometer alumina powder, alumina powder, TiO2, CaO, MgO, SiO2 and polyacrylic acid (PAA), adding nanometer alumina powder into the alumina powder, pouring the obtained mixture into a ball milling device, adding TiO2, CaO, MgO, SiO2, polyacrylic acid (PAA) and water and carrying out ball milling in a planetary ball mill; then taking obtained powder out and pouring the powder into a reaction container; drying slurry obtained in the previous step, taking the dried slurry out, pressing the dried slurry by using a dry-pressing forming method so as to obtain a sheet, subjecting the sheet to cold isostatic pressing at a pressure of 200 to 240 MPa and maintaining the pressure for 30 to 300 s; and sintering the obtained sample at 1450 to 1500 DEG C, carrying out heat preservation for 2 to 3 h and cooling the sintered sample to room temperature so as to obtain the alumina ceramic matrix material. With the method provided by the invention, the alumina ceramic matrix material with a fine and uniform alumina crystal phase, high bending strength and breaking tenacity can be prepared.
Preparation method for alumina ceramic matrix material
JIANG GUOJIAN (Autor:in) / WANG HAO (Autor:in) / HE CHANGFU (Autor:in)
20.01.2016
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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