A kind of zirconium-aluminum matrix multiphase composite ceramics and preparation method thereof
A technology of composite ceramics and zirconium aluminum, which is applied in the field of oxide ceramics preparation, can solve the problems of low fracture toughness and achieve the effects of lower sintering temperature, high strength and reduced energy consumption
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Embodiment 1
[0046] A method for preparing zirconium-aluminum-based multiphase composite ceramics, comprising the steps of:
[0047] 1) Obtain sol: take ZrOCl 2 ·8H 2 O, YCl 3 ·6H 2 O, FeCl 3 ·6H 2 O, CrCl 3 ·6H 2 O, CoCl 2 ·6H 2 O, add water to prepare a mixed solution, and control the molar ratio of Zr, Y, Fe, Cr, and Co elements: 98:4:0.3:0.3:0.3. After the prepared solution was stirred, ammonia water with a concentration of 0.1ml / L was added dropwise, and the pH of the mixed solution was adjusted to 8.7 to form a precipitate, which was washed with water and centrifuged to obtain composite sol A;
[0048] 2) Mixing: Take Al 2 o 3 , CaO, SiO 2 , water, add step 1) and mix uniformly in the composite sol A that obtains, control Al 2 o 3 , CaO, SiO 2 , water, step 1) the mass ratio of composite sol A that obtains is 4:1.5:1.5:65:125; Ball mill 3.5h on planetary ball mill, obtain uniform slurry;
[0049] 3) Drying: put the slurry obtained in step 2) into a drying oven to dry ...
Embodiment 2
[0064] A method for preparing calcium-yttrium co-stabilized zirconia ceramics prepared by solid-phase incorporation, comprising the following steps:
[0065] 1) Obtain sol: take ZrOCl 2 ·8H 2 O, YCl 3 ·6H 2 O, FeCl 3 ·6H 2 O, CrCl 3 ·6H 2 O, CoCl 2 ·6H 2 O, add water to prepare a mixed solution, and control the molar ratio of Zr, Y, Fe, Cr, Co elements: 100:6:0.5:0.5:0.5. After the prepared solution was stirred, ammonia water with a concentration of 0.2ml / L was added dropwise, and the pH of the mixed solution was adjusted to 10 to generate a precipitate, which was washed with water and centrifuged to obtain composite sol A;
[0066] 2) Mixing: Take Al 2 o 3 , CaO, SiO 2 , water, add step 1) and mix uniformly in the composite sol A that obtains, control Al 2 o 3 , CaO, SiO 2 , water, step 1) the mass ratio of the composite sol A obtained is 6:2:2:70:130; ball milling on a planetary ball mill for 4 hours to obtain a uniform slurry;
[0067] 3) Drying: put the slu...
Embodiment 3
[0076] A method for preparing calcium-yttrium co-stabilized zirconia ceramics prepared by solid-phase incorporation, comprising the following steps:
[0077] 1) Obtain the sol: take ZrOCl2 8H2O, YCl3 6H2O, FeCl3 6H2O, CrCl3 6H2O, CoCl2 6H2O, add water to prepare a mixed solution, control the molar ratio of Zr, Y, Fe, Cr, and Co elements: 96: 3:0.1:0.1:0.1. After the prepared solution was stirred, ammonia water with a concentration of 0.2ml / L was added dropwise, and the pH of the mixed solution was adjusted to 9.2 to form a precipitate, which was washed with water and centrifuged to obtain composite sol A.
[0078] 2) Mixing: get Al2O3, CaO, SiO2, water, add step 1) and mix uniformly in the composite sol A obtained, control Al2O3, CaO, SiO2, water, step 1) The mass ratio of the composite sol A obtained is 2: 1:1:60:70; ball mill on a planetary ball mill for 3 hours to obtain a uniform slurry.
[0079] 3) Drying: put the slurry obtained in step 2) into a drying oven to dry for...
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